soupratt Posted November 3, 2002 Share Posted November 3, 2002 Hey all, I was changing my plugs today and I had the guy who was helping me check the engine compression. Moderately warm engine. I was shocked by the results. 1 - 160 2 - 160 3 - 85 4 - 120 5 - 75 6 - 175 He was very surprised as well. The car is running strong. No smoke at idle and at full throttle. Occasional small puff of smoke on startup and when idling at the lights for a while and taking off (but only when engine warmed up and I thought most likely due to oil leaking from turbo seals). No excessive oil consumption. No excessive water consumption or overheating. Possibilities Piston ~ possible, but I would have though that it should smoke a lot more especially at idle Valve assembly ~ that is possible. After changing to the US inlet cam the valve clearances may not be that great. Also to note is that there isn't any significant blow-by as I have a catch can and I check it regularly. Oh. A few more things. Adding oil into the chamber didn't change the compression significantly which whould tell me that if the rings were that bad then I should be smoking like nothing else. The compression was repeatable. ? stuck valve ? Any ideas fellows. This is the last thing I wanted to happen. Cheers Andrei Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted November 3, 2002 Share Posted November 3, 2002 Get a proper leakdown test performed to see if it's bore or valve trouble. Quote Link to comment Share on other sites More sharing options...
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