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06 A4 Quattro 2.0T misfires

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Old 08-12-2017, 03:34 PM
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Default 06 A4 Quattro 2.0T misfires

I just purchased an 06 A4 Quattro 2.0 TFSI with 103K miles. Started getting a couple misfires under load. I changed out the plugs since it was a misfire on cylinder 3 from the CEL code. Problem continued, so I changed the coils as well, at that time I also changed out the cam follower as I know that is a known issue. Car is still showing the same issues. I have now replaced the coils, plugs, and cam follower. Any advice on what I cam try next would be greatly appreciated!
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Old 08-12-2017, 05:27 PM
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vcds scan it. get code and then post. Also do a compression test. possible needs valves carbon cleaned
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Old 08-12-2017, 05:36 PM
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The last code I pulled was a P0303. I will pull the recent code tomorrow morning. Would the valves have heavy carbon deposits cause misfires? Because the only other things I could think of would be clogged injector(s), worn intake cam, or HPFP needs to be replaced due to previous cam follower issues before I acquired the car.
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Old 08-12-2017, 07:26 PM
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P0303 is a generic code. Use a vcds(vag-com) for more accuracy. Also you mite need to performance log to see the data in whats the problem.
Yes. heavy carbon deposits on the valves can cause a misfire.
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