AboutTodd Puccio Expertise General auto repair,electical issues,driveability issues,anti-lock brakes,SIR systems,HVAC,engine performance,Gm spacific. I have worked at my current dealseship since the 1990 model year anything much older than that I have limited exposure to. I do not have very much transmission experience so those question you may want to ask of another expert. When you send me a question let me know the exact make/model/engine and year for the car or suv you have it makes it easier to answer the questions that way.
Experience Experience in the area:I have been employed by the same Gm dealer for 18 years and and a ASE master technician. I work at a Pontiac and GMC truck store. Served a a lead technician when dealership was on a team system.
I just recently moved to a Buick,Hummer,Saab Store when my franschise was purchased by this dealership.
Organazations: ASE master techncian
Education/Credentials:High school diploma,2 year vocational school degree
2 year college degree. Associates degree in applied scineces (auto technology)Awards and Honors: GMC master techncian
Expert: Todd Puccio Date: 7/11/2008 Subject: One Cylinder Not Firing
Question I have a 1995 Pontiac Sunfire (auto.) that started fine the first time started on Sunday AM. Next time when started it began to idle rough and sputter, especially more so when A/C was on. In the shop currently, where they tell me one cylinder is not firing, but they do not know why. They changed coils, plugs and the fuel filter is fine. Can you offer any suggestions? Car has over 180,000km on it.
Answer Hi Shelley:
well in order for an engine to run correctly it needs 3 things. spark,fuel and compression. the spark could be a plug,wire,coil or module. The fuel could be fule pressure bad sensor or bad fuel injector. The compression is an engine mechanical issue it could have a bad valve,or piston rings. Without seeing this or knowing what codes if any are in the computer system it's really hard to tell you exactly what the cause could be. One think I can tell you if this car has that many miles on it I'd think long and hard before I sink any large amounts of $$ into a repair.
