Question about 1996 Audi A4

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Hi I have an Audi 2.6 1998 cabriolet, in the morning went to work with it an everthing was fine, started it that afternoon after work to go home, (this was about 2 months ago and still trying to locate problem) it started by havong a miss, as if one plug was not firing, had to ride it that way home /- 16 km. Tried to start it the next morning, nothing, would not start at all. All spark plugs are firing, feul injectors are injecting feul. once in awhile it sounds almost if it wants to start, as well as once or twice it backfired a little, sometimes it sounds almost like diesel that has preignition problems , this is a petrol model but most of the time the motor only turns over. The backfiring and preignition is very rare and is not always there when trying to start. No work has been done to the vehicle prior to this happening, would be greatful for some advice Regards Peter

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It sounds like the timing is off or a bad timing belt/chain.The dieseling effect is usually due to excessive carbon buildup inside the combustion chamber.Try a fuel injection service to see if that solves the problem of the pre-ignition.

Posted on Oct 02, 2010

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