Quote:
Originally Posted by dikidera
Very sad I was not here when the thread was made. If the car is a factory CNG or LPG I would also suspect the head gasket.
And if so, it is very likely the block is warped too. I've heard horror stories of our S,S2,SG and SG2 engines. Especially CNG and LPG. Tomorrow after cleaning my head gasket material as well as carbon ring from the block I will test for warpage with a Straight Edge, flat 8mm thick with an accuracy of 12 micrometers.
I suspect it will be.
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The car is not factory LPG, it's an aftermarket conversion - when I remove the head (next week) I will also check for warpage, but there are no signs of headgasket failure other than the loss of compression, leading me to believe it's a valve issue.. I'll update when I have the engine apart
Hope yours went ok