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  1. #1
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    Misfiring on cylinder 4?

    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. #2
    Vex182's Avatar
    Guess what I drive...

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    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.
    Silver 2002 Audi S3 225 (BAM) since March 2011.

    Mods: Badger5 2.2 TIP, Jetex filter, PCV delete, 710 DV, Standard N249 in use, R-Tech Stage 1 TiV Remap, Audi TT Pedals, Red Dogbone, Polybushed tie arms. All silicone boost pipes, Michelin PS3s, Red V6 coil packs, MK4 flat blade conversion, retrofited cruise control.
    Currently: 254bhp - 276lb/ft (174bhp/ton) as of 11/02/2013 On V-Power

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    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

  5. #4
    Nilz's Avatar
    Defo worth the wait :)

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    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..

  6. #5
    2nd Gear

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    Was the coil pack, cheers guys

 

 

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