Tuesday, June 9, 2009

Prepping For a Project

Well, it certainly has been some time since I've posted here. Things have been quite busy. Even with the large amount of work going on, we have still managed to get some stuff done around the house.

Here are a couple of photos showing the beginning stage of another project we are starting on.

The back of my truck full of bricks. We found these brand new bricks for sale on craigslist. It came out to just under $0.11 a brick, not too bad since new bricks can easily cost 5 times that much.

Ten bricks on my bathroom scale weighed 36 pounds, therefore each brick averages 3.6 pounds. We had 455 bricks in the bed of the truck (as well as a heavy full-size spare tire with steel wheel which weighs a lot). If I hauled this kind of load more often, I would consider replacing the old leaf springs in the rear, but as is, the truck handled the load very well. It also helped that I serviced all four brakes earlier in the year.

Here are all the bricks neatly stacked and eagerly awaiting their job. What job will that be? I'll let you guess until we are done and post the results.

Wednesday, May 27, 2009

Although much work still needs to be done and even more how-to articles written, I have decided to formally open my other site, How-To Matthew. How-To Matthew will focus more on the technical how-to in the DIY realm which will free Daue Manus to be a more fluidly flowing journal of our DIY [mis]adventures! Check it out!

Friday, May 22, 2009

Fun on the Roof

We recently borrowed a very large extension ladder and one of the first jobs on our list was to do some minor roof work. Some caulk work needed to be done around the flashing on the dormer windows but we decided to also take a look at everything else while we were up there since this roof has recently gone through some very rough storms.

Here is the flashing on one of the chimneys. We will eventually need to work on this before it starts leaking.

The flashing on this chimney is less than a year old and is in good shape.

This vent's flashing will need some work as well.

Here are a couple of other views from our roof top.

What do you think, does our roof look like it is in good shape or should we be saving up time, energy, and money to replace it soon?

Monday, May 18, 2009

More Gardening Fun

With the warm Spring temperatures and lots (and lots and lots) of rain we've had recently, everything is growing rapidly.

We put this child we were watching for our friends to work planting some green beans.

Here is the space an old shack used to sit on. Now that it is gone, we can expand our garden.

Here's the raised bed I made last Saturday. Moving those railroad ties was quite a chore by myself! I also had to excavate a lot of very clay-like soil. Later in the day my wife returned home and we added top soil and left over peat moss and manure, then she planted another garden of tomatoes.

This bed was where we had a good crop of tomatoes last year. As you can see, it is full of tomato plants sprouting. These plants are "wild" offspring from last year's crop.

And our strawberries are also doing well. Some are even blossoming. You probably can't tell in this photo, but the beans the child planted a week ago are starting to come up as well.

Tuesday, May 12, 2009

Planting Raspberries

One of our projects this past Sunday was cleaning out the small area between the back of the garage and the retaining wall that marks the rear of our lot. We then filled it with a mix of dirt from the other side of the back yard where a dilapidated shed used to stand and left over peat moss and manure from our dwarf fruit tree planting project.

We now have six raspberry plants growing in what used to be an unused and unsightly corner of our yard.

Another possible benefit of these plants is that if they get nice and thick, their thorny stalks may help reduce the number of feral cats that like to stray into our yard and try to get into places they shouldn't be.

Friday, May 8, 2009

Under Construction

I am working on a completely new site for all the how-to articles that will be more user friendly, have more DIY articles, and have much more content. Duae Manus will remain as our day-to-day journal of DIY adventure.

Creating the new site is a daunting task, and in order to get it up and running in a timely fashion, there will be few new posts on Duae Manus. Stay tuned for further announcements!

Thursday, May 7, 2009

Checking and Replacing a PCV Valve

The PCV (Positive Crankcase Ventilation) valve is part of an emissions system designed to divert gasses than escape past the piston rings back to the air intake to be burned by the engine.

I will describe how to check and replace a PCV valve using my 1996 Ford Ranger as an example.

1. Locate the PCV valve. It will usually be on a valve cover or somewhere around the top of the engine.

2. Disconnect the hose from the valve.

3. Pull the valve out and shake it. It should rattle. If it doesn't rattle, the valve is plugged and needs to be replaced. Also check the hose by disconnecting it and blowing through it to check to see if it is clogged.

4. Installation is the reverse of these steps.

Replacing the PCV valve is an inexpensive maintenance item you should consider doing every few years. In the case of the Ranger with the 4.0L engine, it is a ~$2 and five minute preventative maintenance job that can keep your engine and emissions system in top shape.

Wednesday, May 6, 2009

Fixing a Leaking Sink Drain

Leaking plumbing is never fun to deal with, but at least when a drain leaks, the water is not pressurized like with a water line leak.

I recently discovered a slow leak from one of the two drains in our kitchen sink. Unfortunately, this was a drain I installed seven months ago, so I was fixing a problem I created. Ah, such is the life of a do-it-yourself person!

Find the Leak
The first step in fixing a leaking drain is determining where the leak is coming from. This may not always be as simple as finding the water droplets, because the droplets of water can travel far from the leak location before they fall to the ground. Keep in mind that water obeys the law of gravity, so if you follow a water trail up to its highest point, that will usually be the source of the leak.

The blue arrow in this photo shows where some water was collecting. The PVC pipe above was also wet. The pipes and drain to the left were completely dry, so I knew they were not the culprit. After using a flashlight, I could see that the drain itself was leaking, not the pipes.

Fixing a Leaking Sink Drain
Now that I knew what part of the drainage system under the sink was leaking, it was only a matter of fixing it before it got any worse.

Luckily for me, this was a quick fix. I would only need three things:
  1. Plumber's Putty
  2. Teflon (Plumber's) Tape
  3. Channel Lock Pliers
1. Place a large bowl or small bucket under the pipes to catch any water.
2. In order to remove the drain, I had to first unscrew the first connector (first photo).
3. Then, I removed the 'T' section of PVC pipe (second photo).
This 'T' section has a splash shield in it that prevents water coming from the left arm to splash up and out of the top opening. When reinstalling, make sure it is installed correctly.

At this time, I took the 'T' section outside and used our garden hose to flush it out and clean it. This step is not necessary, but I figured that I might as well do it while I can.

4. I now had access to the drain. The drain is attached to the bottom of the sink by a large nut. Between the nut and sink is a washer. Unscrew the large nut and place the nut and washer off to the side.

5. The drain is now free, all that has to be done is to lift it out of the sink. The plumber's putty may offer a little resistance, so if you are having trouble, try twisting the drain a little to break the putty's hold.

I have seen some people use silicone adhesive caulk instead of plumber's putty.
The silicone caulk will ensure the drain is water proof and secure, but once it adheres, you will not be able to remove the drain. This would be especially bad if your sink is like ours and is made out of solid surface material because it can lead to a cracked sink.

6. Remove all traces of old plumber's putty from both the sink and the drain. The old putty may be reused if it has not hardened.

7. Apply a bead of plumber's putty around the collar of the drain. There should be enough putty to make a good seal. When you install the drain, some putty should be squeezed out, if not, there is not enough putty.

8. Reinstall the large washer and the drain nut. Tighten. I then used a rag to clean all traces of putty in the sink. A good way to judge whether you have enough putty and the drain is tight enough is by looking at how flush the collar of the drain is to the bottom of the sink. If the collar sticks out past the bottom of the sink, then there is either too much putty or the drain has not been tightened down enough.

9. Wrap the threads of the sink drain and all the threaded portions of the PVC pipe with new Teflon tape (clean the old tape out first).

10. Reinstall the 'T' section of pipe and tighten all the fittings. That is it!

Tuesday, May 5, 2009

Under the Hood - V6 Rear Wheel Drive 1

In my Under the Hood series, I plan to photographically document the engine compartments from as many different vehicle types as possible.* I will then label the most common maintenance items and briefly explain the purpose of each component and system. My overall goal is to help those who do not know their way around an automobile's engine bay and may be intimidated by it.

* Engine bays are different between models of cars, however, most cars in the same class are similar enough that if you know your way around one you will be able to find your way around another.

This episode features a 1996 Ford Ranger with the 4.0L V6 OHV Cologne engine. Click on the photo for a higher resolution view.
  1. Engine Oil Cap
  2. Engine Oil Dipstick
  3. Transmission Dipstick
  4. Radiator
  5. Radiator Cap
  6. Upper Radiator Hose
  7. Engine Coolant Reservoir
  8. Windshield Washer Reservoir
  9. Fuse/Relay Box
  10. Battery
  11. Air Filter Housing
  12. Mass Air Flow Sensor (MAF)
  13. Brake Fluid Reservoir
  14. Brake Booster
  15. Power Steering Reservoir
  16. Spark Plug Coil
  17. Idle Air Control Valve (IAC)
  18. Alternator
  19. AC Compressor
  20. Serpentine Belt

In this photo, you can see the basic maintenance items common to most cars. Below is a brief description of each component outlined in this episode and, if applicable, any quick and easy maintenance checks you can perform on the component.

Engine Oil Cap - Add oil here

Engine Oil Dipstick - Use to periodically check the oil level in your engine. To check, remove the dipstick, clean it with a rag, and fully reinsert it. Remove the dipstick again and note the level of oil. If the oil is in the cross hatched area it is ok. If it is below, slowly add oil through the Engine Oil Cap until the oil level is within the cross hatched area.

Transmission Dipstick - To accurately check the level of the transmission fluid, you transmission should be at normal operating temperature. With the engine running, apply the brakes and move the gear shifter through the whole ranger of gears (i.e. P-R-N-D-2-1), waiting about 2 seconds at each gear. Move the gear shifter back to Park and check the dipstick while the engine is still idling.

Radiator - The radiator works to keep the engine from overheating. You can visually check the bottom for leaking coolant.

Radiator Cap - If the car has been used recently be very careful removing the radiator cap because the system will still be pressurized and hot steam could scald you. When in doubt, listen for a hissing sound when you turn the cap. If you hear a hissing sound, do not remove the cap. Otherwise, remove the cap and look at the coolant inside the radiator. If it is discolored (there are lots of different colors of coolant, so you will have to know the original color in order to know if the coolant's color is different) you may need to flush the cooling system. Also, make sure the radiator is full of coolant.

Upper and Lower Radiator Hoses - Visually check the hose for any cracks, holes, deterioration or any other signs of leakage.

Engine Coolant Reservoir - Check the level of coolant and make sure it is not above the "COLD MAX" line on the exterior of the reservoir.

Windshield Washer Reservoir - Check the level of the fluid against the line on the exterior of the reservoir or keep at least half full.

Fuse/Relay Boxes - To check a fuse, remove it and look through its side. If the wire connects the two prongs, it is good. If the wire is broken, the fuse is bad and should be replaced with a fuse with the same number.

Battery - Most auto parts stores can test your battery for free. Make sure the battery posts and wire terminals are clean and do not have any built-up corrosion. Corrosion will look like white, clumpy powder. To clean the posts and terminals, remove the negative terminal first, then the positive. You can use a wire brush, scrub pad, commercial battery post cleaner, or a 3:1 baking soda/water paste to scrub the battery posts and wire terminals clean. If you used any method that involved liquid or paste cleaners, allow everything to thoroughly dry before reinstalling the terminals onto the posts. Always reinstall the positive wire first, then the negative. You can smear a little petroleum jelly over the posts to help prevent future corrosion. (Note: after uninstalling the battery, the car may run slightly more rough than before because the car's computer's memory will have been reset and it will take a few miles for it to relearn its previous settings).

Air Filter Housing - The air filter is located in here. To access the air filter you will have to remove some clamps or screws (depending on the car). Pull the air filter out and visually inspect it.

Mass Air Flow Sensor (MAF) location - Inside the air intake tube (after the air filter) is the MAF. There is no regular check you can do, but if you ever need to clean the MAF due to a rough running engine, you can spray electronic cleaner spray over the wire.

Brake Fluid Reservoir - Visually check to make sure the fluid is at the proper level.

Power Steering Reservoir - Visually check to make sure the fluid is at the proper level. Some systems use a dipstick method of checking the fluid level.

Spark Plug Coil - Visually inspect for any cracks. You can also check the spark plug wires by looking for any small electrical arcs while the engine is running. You will need to do this in a dark (but well ventilated) garage or at night.

IAC Valve - If your engine in running erratically while idling, the problem may be a faulty or stuck IAC valve. To check, unplug the electrical wiring to the valve while the engine is running. If the engine's RPMs drop, the valve is working. If the engine shows no change then the IAC valve must be replaced.

Alternator - Most auto parts stores can check your alternator for free. The alternator basically converts power generated by the engine to charge the battery and run the accessories, like lights and radio. When the engine is not running, the lights and radio run off the battery.

AC Compressor - If the AC compressor constantly starts and stops but you are not getting any cold air, have the AC system checked for leaks or low refrigerant.

Serpentine Belt - Some vehicles will have one serpentine belt, some have two belts - one that drives the Air Conditioning Compressor and one that drives the Alternator, Water Pump, and Power Steering. Visually check the belts for frays, cracks or missing chunks.

Monday, May 4, 2009

Tool Review: Dewalt DW304PK Reciprocating Saw

Occasionally I will write a review of a tool I have used. In no way do I pretend to be a professional, as this blog should show, but I also have found some of the most helpful reviews to be by "average joes" like me. All the tools I will review should be within the budget for most homeowners and weekend warriors.

Reciprocating saws, sometimes called sawzalls (a trademark of the Milwaulkee brand), saws alls, recipro saws and sabre saws, are great tools for construction and demolition.

Since the saw can change blades, reciprocating saws can be outfitted to cut through just about any material, including wood and steel. This makes them very handy in demolition work where wood planks with nails or screw must be quickly cut.
Priced right around $100, the DW304PK is DeWalt's entry level saw. It comes with a nice carrying case and an instruction manual. I have to admit that I toss most tool cases into storage because I find them to be, for the most part, junk, but I really do like this case. It is large enough inside to fit the saw with a long blade installed and the cord without trying to figure out how they managed to get it all to fit from the factory.

The DeWalt DW304PK is, for the most part, a fairly basic saw, but it does have some nice features:
  • 10 Amp motor
  • 4-position blade clamp
  • Tool less blade change
  • Variable speed trigger
  • 7 lb. weight
The DeWalt's 10 Amp motor is powerful enough to cut through everything I have used it on so far. There have only been two times the saw has struggled, once when I was using the saw to quickly "disassemble" an old couch that I did not want to carry down a dangerous flight of stairs and once while cutting through a thick trunk of a shrub. The reason the saw struggled on the couch was because some of the fabric got caught in the blade clamp and started to clog the saw. The saw struggled on the trunk because the trunk was just too thick for the blade. Neither of those examples were the fault of the saw, but were my fault in the use of the saw.

Two of the features I really like about this saw regard how the saw uses blades. The first is its keyless blade clamp. Changing the blade is extremely easy and fast. The second blade feature is the 4-position blade clamp. This clamp allows you to install a blade with the serrations (cutting edge) down, up, to the left, or to the right. I have made use of this feature many times; often when working with the reciprocating saw, I would find one position in which I had the most control of the saw, but that position would not always be optimum for cutting if it were not for this clever feature. Now, I can hold the saw in the most comfortable position without sacrificing cutting efficiency.

Ergonomics and Saw Control
Being the entry level, "lite" saw offering, the DeWalt DW304PK weighs in at a respectable 7 lbs. I would not call it light or heavy, but manageable. It is light enough to be used over the head for short periods of time without leading to arm fatigue but heavy enough to let you know it is well built and not flimsy.

The variable speed trigger is useful, but I usually end up squeezing the trigger all the way down as I am using the saw. It takes a little practice to get good at accurately controlling the speed, but I have not found it to detract from the overall usefulness of the saw.

What I Like
  1. Rugged and durable build quality
  2. Keyless / Tool less blade change
  3. 4-position blade clamp

What I Dislike
  1. Probably not powerful enough for professional use

I think this is the perfect saw for any homeowner or DIYer who needs a reciprocating saw for those occasional demolition or construction tasks. It is moderately inexpensive, has a sturdy build quality, and is ver simple and straight forward to use.

This Model's Rating
This is a good saw for any non professional. Professionals who use a reciprocating saw all day will obviously want a bigger and better saw, but for the DIYers out there, this is the perfect reciprocating saw.

This Power Tool's Rating
When I had a small portion of a wall to remove when remodeling our kitchen, I tried using a variety of tools and methods to quickly and accurately complete the job. I soon threw in the towel and went to our local hardware store where I found this saw. Using a reciprocating saw made the demolition so easy I fininshed the job in less than half the time it would have taken me otherwise. I soon found other uses for the saw around the house, making it a money-wise decision to purchase it.

Sunday, May 3, 2009

How To Change a Thermostat on a V6 Ford Ranger

A car's thermostat controls the flow of coolant to keep the engine in its prime operating temperature. Thermostats can become stuck in either the open or closed position. In either case, it will need to be replaced.

I noticed the temperature gauge needle never got off the very bottom mark unless I drove on the interstate for over 20 minutes. Even then, it barely got above the cold mark. I knew either the thermostat or the temperature sending unit were bad. Since I was flushing my cooling system, I decided to go ahead and replace the thermostat to see if it would fix my problem. Thermostats are inexpensive (around $5), so well worth the price to "throw parts" at a problem to see if the problem can be fixed.

Troubleshooting the Thermostat
A working thermostat will let the engine get into its normal operating temperature within a few minutes of running and keep it there. You will also be able to get heat from the HVAC controls relatively quickly. If your car has a problem with any of these, the thermostat may need to be changed.

The thermostat may be stuck open if...
  • The engine takes a long time to heat up - indicated by either the temperature gauge not wanting to leave the "C" or "Cold" mark. (Check to make sure the Temperature Sending Unit is working properly, as this may cause an incorrect temperature gauge reading).
  • It takes a long time to get heat from the HVAC.
  • The upper radiator hose never gets hot, even after the vehicle has been driven for several miles.
The thermostat may be stuck closed if...
  • The engine overheats after a consistant amount of time driving, shortly after starting the engine and no leakage can be found from the radiator, hoses, head gasket, or heater core.

Tools and Materials
  • 10mm socket (1/4" drive)
  • 1/4" ratchet (there is not enough clearance for a 3/8" ratchet)
  • Small 1/4" extension
  • 10mm combination box-end and open-end wrench
  • New thermostat with gasket
  • 50/50 mix of coolant and water to top off the radiator if any spills out during operation

Changing the Thermostat
A good time to change the thermostat is when the cooling system is empty, like during a coolant system flush. It is possible to change the thermostat with a full cooling system but some coolant will leak out of the disconnected hoses.

Follow these photos and captions for the thermostat changing instructions on a 1996 4.0L Ford Ranger:

Locate the thermostat housing by following the upper radiator hose to where it connects with the engine block.

Here you can see the thermostat housing tucked away.

You will have an easier time accessing the thermostat by removing the throttle cable splash shield and disconnecting the electrical connector that goes into the air intake. You can also completely remove the air intake hose, but I opted not to.

You will need to remove these two 10mm bolts.

And there is one more underneath.

Here is the thermostat (red arrow). The blue arrow shows the Temperature Sending Unit which controls the temperature gauge. The TSU will always have one wire coming out of it. The green arrow shows the Temperature Sensor, this sensor tells the car's computer how hot the coolant is. This sensor will always have two or three wires coming out of it.

Remove any old gasket material from the hose side and engine side of the thermostat housing.

Here is the new thermostat with rubber gasket installed. Note how it is installed. The spring side should go towards the engine.

To finish: follow the steps in reverse.

Before it took a lot of driving to even move the temperature gauge needle on my truck, now the truck warms up quickly and stays in the normal temperature range like it should. This should help keep the engine running well, improve gas mileage, and keep emissions low.

Saturday, May 2, 2009

How To Flush Your Car's Cooling System

Flushing the coolant in your vehicle's cooling system is a great step in maintaining a healthy engine. A failure in the cooling system can easily result in an engine damaged beyond repair and a wallet much, much lighter. Luckily, servicing a car's cooling system is easily within the grasp of the backyard mechanic. Spring and Autumn or good times to check your cooling system.

Take a moment to familiarize yourself with how your car's cooling system works. Below is a diagram illustrating a typical cooling system with the major parts of the system highlighted and explained.
The heart of any cooling system is the radiator. This large, flat tank of coolant is positioned at the front of your vehicle, just behind the grill. The radiator has many small channels that coolant flows through to dissipate heat. Directly behind the radiator will be one or two fans which help the radiator cool the antifreeze.*
On most vehicles, there will be a radiator cap on top of the radiator, on some, the cap is on the coolant recovery reservoir.
Cold coolant is pulled by the water pump, through the lower radiator hose, and into the engine. The coolant circulates throughout the engine, keeping it from overheating.
When the engine has reached normal operating temperatures, the thermostat opens, allowing the hot coolant to flow from the engine back to the radiator where it is cooled again.
When you turn the heat on inside your car, coolant flows from the engine into the heater core. The heater core is sort of like a miniature radiator located inside the dashboard that uses the heat from the coolant to warm the air in the car's cabin.

*The term coolant and antifreeze are interchangeable. This fluid has four main tasks: cool the engine, keep from freezing, keep from boiling, and keep the system from corroding.

What Type of Coolant/Antifreeze Should I Use?
Today's coolant market is confusing. In days past all coolant was the green ethylene glycol variety, but not anymore. Now it seems that every car manufacturer has at least one color of coolant. There are extended life coolants that now claim to go up to 150,000 miles before they need to be flushed and there are several "All Makes, All Models" type of coolant on store shelves. Which to use? Here is a pdf that has some good, technical information. If you want my simple answer, I would recommend using whatever coolant came with your vehicle. If you cannot find that or do not know, you can always use the tried and true green ethylene glycol. The only major drawback with the green stuff is its short 2 year coolant change interval, but even then, this short flush interval forces you to keep on top of your cooling system's maintenance, so I am not even sure that it is a drawback.

Common Problems With the Cooling System
Normally, your car's cooling system will work flawlessly for many years, but when a problem does occur, it is usually one of these:
  • Leaking coolant (external) - a cracked radiator or old hose can cause coolant to leak. Replace any worn hoses or repair/replace the radiator.
  • Leaking coolant (internal) - if your coolant level is dropping but you do not see any signs of external leakage, check the condition of your oil. If the oil is milky, then you have a blown head gasket.
  • Leaking coolant (general) - if the coolant is not leaking out externally or internally, have your radiator cap pressure tested. A bad radiator cap may let steam escape, thus lowering the level of coolant.
  • Coolant does not get cold - A broken fan clutch (if your fan is belt driven) or an electrical problem (if your fan is electrically driven) can disable the fan.
  • Engine overheats - There can be many causes of this. First, check the coolant level in the radiator. Next, check for any liquid leaking out of the weep hole in the water pump; leakage here indicates a bad water pump. If the water pump and coolant levels are good, check the thermostat. A thermostat that is stuck closed will not allow coolant to circulate. When the engine is warm, feel the upper radiator hose. If it is hot, then the thermostat is not stuck closed.
  • Engine takes a long time to get to operating temperature - The thermostat is stuck open, replace the thermostat.
  • There is no heat coming out of the vents - A thermostat that is stuck open will increase the time it takes to get hot air out of the vents. If you do not get any hot air, the heater core may be plugged or bad.
  • Coolant is leaking into the front passenger leg area - The heater core is clogged.

Flushing the Coolant on a 1996 Ford Ranger
Here is the method I used on my Ranger to service the cooling system.
There are several methods available.

There are four main steps in servicing the cooling system:
  1. Flush the radiator
  2. Flush the heater core
  3. Flush the coolant recovery reservoir
  4. Fill the system
Tools and Materials
You do not need much to flush your cooling system.
  • The proper amount of coolant and water (check your owner's manual to find the cooling system's capacity)
  • Pliers or screw driver to remove hose clamps
  • Hose to direct draining coolant into proper container
  • Large bucket or container to drain coolant into
  • Garden hose attached to a water supply to flush the system
  • Funnel to fill the radiator
  • Chemical Cooling System Flush (optional) if your cooling system is very corroded or dirty, you may want to use a cleaner.
Flushing the Radiator
  1. Start by removing the radiator cap.
  2. Locate the radiator drain (on side of radiator, passenger side)
  3. Attach a 3/8" inside diameter hose onto the drain nipple and route the hose into a large (4-5 gallon minimum) container.
  4. Unscrew the draincock enough to let coolant drain from the radiator. You do not have to remove it. (If your car's radiator does not have a drain, you can disconnect the lower radiator hose to drain the radiator).
  5. When coolant stops draining, use a garden hose at the radiator cap to flush the radiator. When the fluid coming out is clear, the radiator has been flushed. Let all the water drain, then tighten the draincock. Compare the color of your coolant to new coolant. If the old coolant looks good, then proceed to the next section. If the old coolant is rusty, or if chunks of rust and corrosion came out with the flush, you may consider using a chemical flushing agent to clean your radiator. Follow the manufacturer's instructions. On my truck, the old coolant looks really good, so I did not use any chemical cleaners.

Flushing the Heater Core

  1. Locate the heater core inlet and outlet hoses. These two hoses will be located at the passenger side firewall. Follow the hoses to determine which is the inlet and which is the outlet. The inlet hose will come from the engine or thermostat; the outlet will come from the water pump.
  2. Detach both hoses. Route the outlet hose so that it will empty into the drain container (I rigged up a drain pipe and hose).
  3. With the garden hose, spray water into the inlet hose until the fluid draining from the outlet hose is clear. Alternate between a steady stream and short bursts to help dislodge any build-up inside the heater core.
  4. Back flush the heater core by switching which hose drains and which you spray water into.
  5. This step is optional, but you can repeat step #3 one more time.
  6. Reattach the hoses, making sure they are properly routed (you do not want to get the inlet/outlet switched).

Flushing the Coolant Reservoir
  1. Locate the end of the reservoir hose attached to the radiator pressure cap. Remove the hose from the cap and unclip it from the top of the radiator.
  2. Route the hose so that the fluid drains into the drain container.
  3. Open the coolant recovery reservoir cap. If the inside is fairly clean a simple garden hose flush is all that is needed. If there is a lot of scale and corrosion build-up, you may need to use a household cleaner to help get the tank clean. The reservoir on my truck had a bit of sediment in it, but not much.

Before proceeding to refilling the system with fresh coolant, make sure all hoses and drains are secure. Also, if your car is older, now may be a good time to do a little preventative maintenance and replace the thermostat.

Filling the System
  1. Slowly add a 50/50 mix of antifreeze and water (distilled is preferrable) to the radiator. Use a large funnel. When done, leave the funnel in place.
  2. When the radiator will take no more coolant, fill the reservoir to the "COLD FILL" line.
  3. Set the heat controls all the way up.
  4. Start the engine and let it run for 10 minutes AFTER it gets to operating temperature.
  5. Shut the engine off and let it cool down. Add more coolant as necessary and reinstall the radiator cap.

There you go! I would keep an eye on the coolant level periodically for the next couple of days. If you think there may still be air in the system, you can purge it out by running the engine with the cap off the radiator.

Disposing of Used Coolant
"How do I properly dispose of used auto coolant?" This is a common question. The answer is to find out what your local laws are. Some recycling or hazardous materials centers will accept used coolant as will some auto parts stores. In some places, you can drain used coolant into the sewer as long as that sewer goes directly to a sanitation plant. In any case, always follow these guidelines:
  • NEVER empty into a storm sewer or drain that does not end at a sanitation plant (septic systems are unacceptable!).
  • NEVER pour into the ground.
  • NEVER leave antifreeze uncovered - children or animals can be attracted to its sweet scent and taste and drink it, this is VERY dangerous and can be fatal!
  • ALWAYS find out what the local laws are for properly disposing used coolant.
Other Coolant Flush Methods
I mentioned some other methods of flushing the coolant system. One simple way is to do a radiator drain and refill, then drive the car for the day, then repeat a few more times. However, using this method will not get the heater core or coolant reservoir properly flushed.

Another method is to purchase a flushing kit. These kits include a 'T' adapter that you install by cutting one of the hoses going to the heater core. Then you attach a garden hose and run the engine while the water purges all the old coolant out of the radiator. Finally, you add straight (not pre-diluted) coolant to the radiator until the proper mix is attained. This process does a good job of flushing, but you end up with tap water in your cooling system. I would personally not want all the hard minerals found in most tap water clogging up my radiator, so use distilled water when possible.