Tony Brooks Posted January 18, 2018 Report Share Posted January 18, 2018 5 hours ago, David Mutch said: Thanks. No, it's not in the manual. Guess it varies a fair bit depending on cranking speed and such like. 400 sounds reasonable, given the compression ratio. 475 sounds optimistic, but then I don't know what effect the heat of compression would have. I guess if it's firing and they are all similar then whatever absolute numbers I get are fine, as there's no sign of excessive blow-by. I'll do the test and report back Yes, if it starts easily from cold then the compressions should be fine. Form your symptoms, if it is a compression issue, which is less likely at present, I would suspect one cylinder would be down a bit and that would be easily identified. 1 Link to comment Share on other sites More sharing options...
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