noridetoolow
+1y
Ok...new crate engine, fuel injection, first test drive and the truck went from idling and reving fine to hardly or no idle, and no power during tst drive, runs like a wore out lawn mower...mostly when you give it 1/2 pedal or more. Checked plugs, wires, timing...all seem good. Fuel pressure regulator...when we pull the vacume line that runs from it to a small plastic peice on the fender well and plug that vacume line it smoothed out and helped a bit....was able to get the truck up to 65 mph with some still poor running but at least a bit better. Anyway....any ideas? We are suspecting the fuel press reguator but those things hardly ever fail. thanks all