I have a 2001 buick lasabre... it starts rough in wet weather but fine in dry, cold or hot weather. In wet weather it won't accelerate over 45/50 mph and the engine knocks badly. Gets somewhat better after driving 20+min. I have changed the wires, fuel pump and filter, coils, plus spark plugs and wires (were changed 40,000 miles). Any suggestions?
Mar 2, 2012 at 2:26 AM