Tuesday 28th January 2003
Have been losing small amounts of coolant for some time and I now think perhaps it is evaporating from the expansion tank as occassionaly I can hear the hissing coming from the blue cap area. Have replaced the cap recently - anyone else's hiss?!?
Alex
Tuesday 28th January 2003
Pretty sure it's not the pipe. The only other thing it could be is at the join between the neck of the expansion tank and the screw thread...although I have sealed this with liquid metal. Maybe a new expansion tank......
Tuesday 28th January 2003
The expansion tank is about 1/3rd full when cold, but due to the "evaporation" gradually gets lower and lower.
>> Edited by alex.mcintosh on Tuesday 28th January 14:48
Wednesday 29th January 2003
I got the blue cap from a TVR dealer and have checked the washers - as per the last one....unless both are faulty!
The noise is definitely not coming from a split hose, but the top of the expansion tank.
No problems like overheating, head gasket, etc....
Wednesday 29th January 2003
If I don't keep a close eye on it, the expansion tank does run dry. Originally there were no air locks, but when the expansion tank does get empty, I suspect air is then drawn into the swirl tank. Vicious circle really....
Thursday 30th January 2003
Have had several pressure tests done by dealer and a hydrocarbon as well - all OK apparently. Due for a service in a few weeks...maybe same tests AGAIN! If all is still OK maybe I'll put it down to just one of those TVR things!
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