Buick Repair Questions? Ask a Mechanic for Answers ASAP
hi my name is ***** ***** I try to help. just a few questions, when it turns over does it turn normal or faster then usual? did this happen all of a sudden or after things were done to the engine? did you have fuel put into it recently from a different then usual station? Have you pulled a spark plug out to look at it yet and were they replaced recently?
what is the mileage on it and would you mind pulling a spark plug and telling me what you see the color on the insulator and gap if it's black and sooty
black means just that, too rich or not a good or constant spark. have you checked yet? how many times has this occurred? does your scanner or code reader check for pending codes?
if the spark plug insulator is white -- lean mixture may be vacuum leak, black is rick or fouled , brown is just right or normal. check air hose to throttle body for tightness or cracks. Thet are also known for bad map sensors. Disconnect the battery for about 2 min and reattach and try , Does it stay running if throttle held off the idle, giving it more fuel?