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Stuttering while accelerating 700 1991

So I made the first investigative attempt by installing another FPR and that did not fix the issue. Next up in the coming days will be as Fitz suggested. I removed the TBelt cover and the belt is still taut and the cam sprocket still tight and in place. The symptom is predictable. When stationary and idling if I advance the throttle there is a hesitation ( stutter if you will , backfires occasionally also). Once pass this "point" the engine will rev smoothly and keeps the revs. It seems to me it occurs when there is a "demand" . I'll follow up for sure , thanks everyone and keep em coming!!!






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