[tclyder]

Where the upper radiator hose connects to the elbow on the engine block there is a bleeder screw.

I did't like the idea of just opening the screw and letting the coolent splash all over so this is what I did.

I believe the bleeder screw has a M10 metric thread. So I went to Pep boys and looked for bleeder valves used on brakes. I bleieve the one I bought ($1.25) was for a maxda rx7 (It was blue in color)and it had a M10 thread.

Next I bought some airline tubing from a pet store to fit on the bleeder valve - Home depot sells the tubing also.

So here is the procedure.

1. Make sure the car is off and the heater in the on position
2. Remove the bleeder screw and replace it with the bleeder valve you just bought. Do not over tighten!
3. Push about a 2-3 foot piece of airline tubing onto the valve.
4. Take a clean empty milk container or any other plastic container and place the airline tubing into it.
5. Remove the radiator cap.
6. Loosen the bleeder valve.
7. Now take a small vacume (I used a small orak) and I took the hose from the vacume side removed it and placed it on the blow side. This is real important!
8. My vacume's hose O.D. is approximately the same as the I.D. of the hole where the radiator cap mounts to.
9. Place the hose where the radiator cap mounts to and turn it on.
10. The vacume now blows the air into the overflow tank thus pushing the coolent through the system.
11. In a matter of seconds you will see coolent and bubbles coming through the airline tubing into the plastic container.
12. I let the vacumn run untill it was all coolent coming through.
13. Then I shut it off - removed the bleeder valve and replaced it with the bleeder screw.
14. I re-added the coolent back to the overflow and capped it up.

It was real easy and the car has run great since then.

Tom.

I have a 1985 early 944