Volkswagen Golf MKIVolkswagen Golf MKIIVolkswagen Golf MKIIIVolkswagen Golf MKIVVolkswagen Golf MKVVolkswagen Golf MKVIVolkswagen Golf MKVII


+ Reply to Thread
Results 1 to 9 of 9

Thread: Mk6 TSI cyclinder 3 misfire (another one)

  1. #1
    Junior Member
    Join Date
    Dec 2016
    Location
    Westbrook
    Daily
    MK VI Golf TSI
    2nd Car
    Jeep Wrankler U CRD
    Name
    Joseph
    Posts
    10

    Mk6 TSI cyclinder 3 misfire (another one)

    Hello everyone,

    I have a 2011 mk6 golf TSI. I bought it as a project, it had eng, epc light and it was running rough. Here is the diagnosing processes I followed as this seems to be a very common fault.

    1. Checked obd codes, found p303 misfire cyclinder 3.
    2. Replaced spark plugs, cyc3 was very oiled and black.
    3. Replaced cyc3 coil.
    4. Reset codes and test
    5. Replaced cyc 3 fuel injector.
    No progress still have error and misfiring.

    Compression test on cyc3. Found to be 50psi, should be 140-160. Next step is to remove the head and clean and reseat the valves. Upon inspection the back of all valves were found to have a large build up of carbon. I'll post photos and videos soon.

    Cheers

  2. #2
    Junior Member
    Join Date
    Dec 2016
    Location
    Westbrook
    Daily
    MK VI Golf TSI
    2nd Car
    Jeep Wrankler U CRD
    Name
    Joseph
    Posts
    10

    So progress as it stands, have to replace valves (several bent) and I'm now considering doing the piston rings while I have the head off.

  3. #3
    Junior Member
    Join Date
    Dec 2016
    Location
    Westbrook
    Daily
    MK VI Golf TSI
    2nd Car
    Jeep Wrankler U CRD
    Name
    Joseph
    Posts
    10


  4. #4
    Junior Member
    Join Date
    Dec 2016
    Location
    Westbrook
    Daily
    MK VI Golf TSI
    2nd Car
    Jeep Wrankler U CRD
    Name
    Joseph
    Posts
    10

    Just pulled the sump... found lots of frag. Pulled piston 3, lots of damage to the skirt around the gudgun pin. Explains the cylinder misfire and lack of compression. New piston on the way from the UK, and a new set of valves locally.

  5. #5
    Senior Member whitemoo's Avatar
    Join Date
    Mar 2010
    Location
    SW Sydney
    Daily
    City Rail
    Name
    Den
    Posts
    781

    That escalated quickly, how is the block when all that went?

    Good on ya for undertaking this yourself.

  6. #6
    Junior Member
    Join Date
    Dec 2016
    Location
    Westbrook
    Daily
    MK VI Golf TSI
    2nd Car
    Jeep Wrankler U CRD
    Name
    Joseph
    Posts
    10

    So, pulled all the pistons, new rings and replaced #3 piston with new oem part. Light hone of all cyclinders. Removed supercharger inspected and serviced (easy to do while the he'd is off). All new valves, valve seats ground to match the new valves.

    Re assembly carried out. New oil and filter. Radiator and coolent system flushed. New spark plugs.

    Started almost straight away, once the fuel had primed. Once the oil flow stabilised it ran really nice. Have had a short test drive around town, it seems to be running great. Just need to run in the new rings and it will be back to normal.

    All up costs;
    -car - $6099
    -parts - $1452 + on road costs

    I have seen quotes as high as $8000 to do the same job!

    Cheers all

  7. #7
    Junior Member
    Join Date
    Dec 2016
    Location
    Western Oz
    Posts
    5

    What was the original cause Craftyjoe?

    Chain tensioner failure ??


    .

  8. #8
    Junior Member
    Join Date
    Dec 2016
    Location
    Westbrook
    Daily
    MK VI Golf TSI
    2nd Car
    Jeep Wrankler U CRD
    Name
    Joseph
    Posts
    10

    So the original failure causing the missfire was the badly damaged piston.

  9. #9
    Junior Member
    Join Date
    Dec 2016
    Location
    Western Oz
    Posts
    5

    Did your car have the 37G7 recall completed prior to the piston damage?

    There should be a recall sticker on the drivers door jamb

+ Reply to Thread

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts