Guys,
I've been around here reading for several years now and I'm finally posting on a problem I can't seem to find a solution to.
I have a 1995 Regal 322 with twin Merc 7.4L Bravo 3's with Thunderbolt V ignition systems and Weber 4bbl carbs. I have a hesitation / stumble around 1300-1600 rpms...
I started noticing a loss in power and a rough idle so I checked my plugs and found the #4 plus was wet and carbon fouled. I replaced the riser gaskets last year because I was getting water in the cylinders, but now its only 1 cylinder. I'm assuming that now it has to be a cracked manifold or...