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Misfiring on cylinder 4?

Discussion in 'A3/S3 Forum (8L Chassis)' started by Tim_Attard, Jan 25, 2013.

  1. Tim_Attard
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    Tim_Attard Active Member

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    [Jan 25, 2013]
    Hello,

    i am the proud owner of a audi a3 8l 2003 1.8t and while driving to work today it started to make a bad rumbling noise and misfire (or what i think is misfire) anyway i pulle dover and used my torque app to scan for fault codes and gave me: p0304 which is misfire on cylinder 4.

    i drove it to the garage and they will be looking at it in the morning i just wanted to know what sort of problem would i most likely be looking at and what sort of price range?

    Thanks
    Tim
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  3. Vex182
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    Vex182 Guess what I drive...

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    [Jan 25, 2013]
    It's usually just a coilpack that's has failed, very common on these engines. Other than that it can be a damaged spark plug (happened to myself) or damaged coil pack wiring. If it's just a coil pack then I think the last one I brought was about £30.
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  4. Tim_Attard
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    Tim_Attard Active Member

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    [Jan 25, 2013]
    thank you so much ha ive jsut spent a few 100 on parts/paint for modding the inside and really didnt want to have to strip the engine :/ u have filled me with confidence.. altho if ur wrong and tomorrow i get shown a big bill u sir are in trouble :p
    #3
  5. Nilz
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    Nilz Defo worth the wait :)

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    [Jan 25, 2013]
    Sounds like it could be a coilpack or a spark plug, genuine coils are about £30, Spark Plugs are about a fiver each, if both of those are changed and its still an issue, I would be looking at the coil pack harness.

    Let us know how you get on.

    Labour wont be too much as its only a 5 minute job for coil and sparks..
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  6. Tim_Attard
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    Tim_Attard Active Member

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    [Jan 26, 2013]
    Was the coil pack, cheers guys
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