good troublershooters needed
#21
Senior Member
RACING JUNKIE
Join Date: Sep 2007
Location: Montvale, VA
Posts: 1,431
My 496 used to break up REAL bad right at about 5500-6000.Electrical checked out okay,fuel pressure was not dropping and plugs looked fine(didn't appear to be lean)Talked to an old-timer down the street,first thing he asked was what size power valve was in my Dominator.I told him plugs,front and rear.He said put one in the front.Idle vaccum measured about 5.5-6" and I stuck a 4 in it.No problems since.I don't fully understand it ,but food for thought anyways.I have found in the past that ignition problems and fuel delivery problems act almost identical.Look at everything and don't get tunnel vision on the electrical system.JMO