20 valve turbo coolant loss - the pressure, the pressure

[tom winter]

Oops, Kneale is right. If the head gasket is bad, the system will be seeing
an increase in pressure. I would expect the same if the head was cracked.

Fill the sucker up and drive it until hot, then look carefully at
everything. I'd also check the pressure again, just in case. The problem you
describe fits a bad head gasket EXCEPT for the pressure issue.

Tom

> Don't most head/head gasket issues result in greater pressure in the
> cooling system?  
> 
> I'd look first for something that leaks while the engine is running.
> Neighbor's Envoy did the same thing, but there was never a puddle under the
> car where he parked.   He let it idle after a good warm-up drive and
> discovered that when hot, something in the water pump would expand enough
> to allow leakage that only occurred while the engine was hot and running.
> 
> At 09:35 AM 10/6/2004 -0400, McCohens at aol.com wrote:
>> I am seeing an empty burp tank every morning on my wife's 91 200Q.  No
>> leaks, no white smoke out the exhaust.  A pressure test showed a small drop
>> over time but nothing that terrible.
>> 
>> My mechanic is hesitant to take the car in as he has seen cracked heads on
>> these in the past and has had problems finding good ones as a replacement.
>> 
>> Any other experience in this area?  Never saw this sort of issue on the list
>> before.  If my mechanic is correct what is the going rate for a good head.
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