Engine Trouble 2006 W-22 8.1
Left for Florida last night and about a hour into the trip engine started to backfire and hesitated while going up hills. Ran fine on flat road going back home but engine missed a lot. Coach is 10 yea...
Forum Discussion
Gale Hawkins wrote:
This happened twice with our 1992 454 TBI engine. First time it was the pick up coil under the distributer. Second time it was the fuel filter. Symptoms were identical both times. I do expect your much newer engine has the old style distributer.
The prior owner had the #7 or #8 spark wire fail.
there is no distributer and OP said fuel filter is new but that aside plugged fuel filter wont cause a engine misfire(backfire) underload or miss driving along flat road.But a bad injecter will misfire under load and miss like a bad plug or plug wire
