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Thread: Misfire issue

  1. #1
    Tuner R8SVton's Avatar
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    Aug 2007
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    Wollongong, NSW, AUST.
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    Misfire issue

    Hi guys,
    I'm getting an engine light showing and the scanner came up random misfire. Getting random misfires in a couple of the Cylinders but Cylinder 6 is the one that's causing the most problem. I've check plugs and leads and all good, so at the end its got me stumped.
    Here is a log.
    Cheers

    Misfire no.1.hplMISSFIRE.Layout.xml

    TJ PERFORMANCE
    2014 HSV GEN F R8 SV Enhanced (LS3 340KW)
    6 Spd Manual
    Tuned @ 281RWKW/629Nm with OTR and 100cell CATS only.

  2. #2
    Tuning Addict 5FDP's Avatar
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    May 2012
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    Rogers, MN
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    13,565
    Compression test?

    Swap 4 and 6 injectors around and see if it follows?

    Smoke the intake for a leak?
    2016 Silverado CCSB 5.3/6L80e, not as slow but still heavy.

    If you don't post your tune and logs when you have questions you aren't helping yourself.

  3. #3
    Tuner R8SVton's Avatar
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    Aug 2007
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    Wollongong, NSW, AUST.
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    What's the best way to smoke intake for leaks?

    TJ PERFORMANCE
    2014 HSV GEN F R8 SV Enhanced (LS3 340KW)
    6 Spd Manual
    Tuned @ 281RWKW/629Nm with OTR and 100cell CATS only.

  4. #4
    Tuner in Training ants-gts's Avatar
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    Apr 2015
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    dapto ,nsw
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    Mate had same issue in a Gts
    It was a cracked rocker

  5. #5
    Tuner R8SVton's Avatar
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    Aug 2007
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    Got the car back from Dealers, cracked intake manifold.
    Back to and

    Quote Originally Posted by ants-gts View Post
    Mate had same issue in a Gts
    It was a cracked rocker

    TJ PERFORMANCE
    2014 HSV GEN F R8 SV Enhanced (LS3 340KW)
    6 Spd Manual
    Tuned @ 281RWKW/629Nm with OTR and 100cell CATS only.

  6. #6
    Tuner in Training ants-gts's Avatar
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    Apr 2015
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    dapto ,nsw
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    great to hear your rolling again and wasn't anything major
    2013 GEN F GTS (the stormtrooper)
    mods- BTR stg3 cam, pac valve springs, harrop intake, ID850s, forced induction interchiller, 2.55 upper/9.17 lower pullys, snow performance water/meth injection, defillipo 3" catback, cat delete pipes, built and tuned by me