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....