2001 suburban 5.9, 90000 mi. When its a cold start situation(morning, afterwork) the engine runs ruff. DTC is PO300, multiple cylinder misfire. After car warms up it runs fine. Mechanic says he dealt with same car & problem last year. It was STUCK VALVES. Cost 1600.00. Unable to afford this right now. What will go wrong if I continue to warm it up and drive it? Any way to stop the unsticking if this is the problem? Could it be anything else?
have the same problem?
Sunday, January 28th, 2007 AT 9:25 PM