i have a 1990 240sx sohc stock engine just today it started to stutter at 4500 rpm it will pull fine untill then and it sorta sounds like a rev limiter or a back fire in the exhuast. could my timing b off or or does my car have a points system, or if im way off could u tell me what the problem is thanks
Injectors or injector seals/o-rings? Mine did that too…
Check the plastic piece for the air right above the rad shroud for any cracks!! Or your timing chain is starting to stretch, like mine did!! slowly throws the car out of time until the chain goes!!