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2000 Audi A4 Quattro Question: miss fire

 

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wes21, 1.8L 4 Cylinder Turbo, Leesport, PA, October 29, 2010, 08:21
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i have a 2000 a4 1.8t quattro out of no where i lost power and it would not run and the check eng. light was on so i got it scanned and it came up a miss fire on 2, 3, 4 what could be happening to make this miss

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  • Answer #1

    patrick mannion from Greg Solow's Engine Room, October 29, 2010, 09:04
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     Master

    Its hard to tell without being able to do some basic diagnostic tests. Have you lost spark or fuel to those cylinders? Check for obvious vacuum leaks. A professional grade scan tool read raw sensor data without having to intrusively teat each sensor, I would look at Oxygen sensor reading, fuel trim figures Long and Short term and air flow meter air volume readings.

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    Jimbeokie, December 17, 2010, 17:08
     Rookie

    I would think timing belt has broken or slipped

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