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
miss fire on 2000 Audi A4 Quattro
1 answer 1 comment
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.
I would think timing belt has broken or slipped