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Re: Last question, I swear! Is there a bleed scr (archive)

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Posted by paul on January 12, 2002 at 16:36:07:

In Reply to: Last question, I swear! Is there a bleed screw.. posted by Cosmic on January 11, 2002 at 23:30:04:

Whenever you drain the cooling system you need to burp it.

The best way is have the car jacked up and run it with the cap off until it reaches operating temperature. You should hear some gurgling sounds and bubble comming up the expansion tank.

Now back to the overheating. Are you sure your pressure cap is good. They do go bad. If you not run a pressure test on the cooling system; I suggest you do so. My car kept loosing coolant and I could not find it until I saw my radiator seeping. If you can not run a pressure test then the next time you drive your car do the following.

Wait about a half hour after shutting off the engine. The engine should still be warm. Open up the radiator/pressure cap. If you do not hear a pressure being released out of the cooling system when you remove your cap, you have a leak somewhere. If this is the case you will have to run a pressure check.

The radiators on the these cars are known to seep, thus loosing pressure and causing over heating. If your cap is bad same thing. You might have a leaking vent hose too.

Your cooling fan might not be working too. You can check that by looking through the front grill when the car gets hot.

Finally, you might just consider doing a complete cooling system overhaul, after all most of our cars are at least 10 years old.

hoses- all of them
water pump
heater control valve
heater core

Currently, I am in the process of replacing the heater control valve; it is seeping in the cabin and wetting my carpets. There 3 or 4 more hoses I have to replace and finally the heater core will be replaced sometime soon.

Yes, this is a lot of work, but you will have peace of mind and no worries for at least 5 to 6 years. Cheap insurance for a high performance car.

Take care.

...for the cooling system in case of airlock?
Thanks All

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