Thread: CJ's Build
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Old 20th December 2019, 13:48
cbjroms cbjroms is offline
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My 13/60 engine seems to have developed a bit of a misfire. It only occurs when the engine is warm/hot and I rev the engine. My first thought was an electronic ignition problem but I have replaced the distributor, redone the timing and the misfire persists.

So I have checked valve clearances (they were all too tight) and done a compression test. I am getting between 105psi and 115psi across the 4 cylinders which seems quite low to me. I was expecting 150psi. Putting a bit of oil in the cylinder seems to make very little difference. So I have either got a consistent valve leakage problem on all 4 cylinders (seems unlikely?) or my compression gauge is reading low.

What do you guys think?
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