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Well im having a bit of problems with my engine, some of the times when i accelarate, as the engine revs, and it get between the 2000-2500 rev range it sttuters (just stays there like there was a limiter) and one or two seconds later if continues to rev,


it makes like a farting sound, could it be missfire?? could it be the spark plugs???
or maybe timing??

or what else could cause the problem

also its almost always at WOT......

any help would be apreciated, thanks