I wonder if anyone has an idea what's going on with my truck. It starts and runs fine below about 1500 rpm.(just a guess because I don't have a tach) As soon as I try to run it any faster it starts spitting, sputtering, and popping. I've been driving it for about 2 years, and the problem just started recently. I've changed the points, condenser, plugs, and fuel filter, but have seen no change. It doesn't seem to be affected by load or road speed, only rpm. It runs fine from idle all the way to wide open throttle, as long as it's at low rpm. At higher rpm it doesn't matter where the throttle is, it just sputters, pops, and runs like hammered crap. It's a '55 235 converted to 12V in a '49 3800. Any ideas?
Last edited by Dirty_Gurty; 09/26/2012 5:52 PM.
