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Problems with engine/check engine light


Model: 911, Year:2003, Mileage:53,587, Type of use:Street use only
Two weeks ago, I became a first time Porsche owner when I bought my 2003 Carrera. It has been in the shop 3 times since then.The 'check engine' keeps coming on (solid, not blinking)- and the problem is always with the 5th cylinder. The first time I took it in, they replaced the unit that covers the spark plug as the old one was improperly installed and had broken in half. The car ran well for a few days, and the check engine light came on again. (They tested for compression, etc. and all measurements were normal.) This time they replaced the fuel injector.This morning, the check engine light came on again. Sitting at a stop light, rather than the smooth pur of the engine, the car was shaking pretty well, and the response out of the light was pretty choppy. So, back to the shop I went.Unfortunately, other than gas in the tank and air in the tires, I am only starting to learn about cars. For two weeks of ownership, having my car in the shop for 5 days of that time is getting frustrating.Any ideas, input, insight that anyone may have would be greatly appreciated.Joel KuhlOregon

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