Had lots of vehicles but never one that runs like this. It is a 94 Chevy tracker. 4cyl 16 valve multiport injection engine. It will not hold a constant speed without a miss fire. 30 mph or 50 mph on a flat road it will sound like it has dropped a cylinder. Engine starts easy, without hardly even cranking. Idles smooth as silk. Accelerates without hesitation and pulls strong all the way to redline without a miss. I have changed plugs, cap, wires, and rotor because it sounds like an ignition miss. This made no change. I have seafoamed and ran techtron though the tank this made no difference. Seems low load, light throttle should be when the engine is working the least. I can't figure why this one doesn't like to run there. FWIW I get no SES light, no smoke, no fluid usage. Anyone ever had an engine behave like this? Thanks
- posted
17 years ago