Hi, I have a 2001 1.7 puma and it has developed a misfire at low revs. It had new leads, plugs and coil pack fitted a couple of months ago when a different fault developed and another new set of plugs today which have made no difference. The car drives fine, but when you allow the revs to drop under 2K revs then apply the throttle to accelerate again then the car will stutter and hesitate as if mis-firing and occasionaly will even backfire. This only happens for a few seconds and then is fine again and also if you change down to keep the revs above 2k then it never happens. The car starts fine and drives fine apart from this one issue and a friend plugged it into his diagnostic box today and it came up with no faults.
Help Please!!!! Sam.
Help Please!!!! Sam.