I have a clark cg25 with a 4 cylinder mitsubishi engine. It backfires through the carburator consistently while under load. At idle, it runs fine. I checked cam timing, and looked at all the valve springs. Compression tested around 100p.s.i. all the way across with 4 puffs a piece. It sounds like an early head gasket failure across cylinders 2 and 3. Are the heads prone to cracking? should they be milled? I hope some of you fleet guys can weigh in. I also replaced the coil and cap.
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Hi There,Hope it helps,Mine would start,Run great, But a Hr to get restarted,,A simple coil that i borrowed from my old dodge pick up fixed that,,and I had Just put a new coil in,and milk in my Oil,, Buddy of mine,said run a jug of Lestoil.In the oil,till clean,drain, and the best head gasket stop leak, Been PERFECT for a year! Said It Must BE LESTOIL, Hes been at it for 35 years! And Even his clark has a blown H Gasket,there noted for them,"He Said".Good Luck!!!!!!!
if its a 4g54 it has a chain
if its a 4g63 it has a belt
take vacuum tests that may show the trouble too
timing belt replacement time....
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