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Thread: 3.2 GSi slight misfire, need help....

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    Regular Member TimTay's Avatar
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    Default 3.2 GSi slight misfire, need help....

    Hi all, My gsi hass started to play up. have narrowed it down to what feels like a very slight misfire. happens at low rev underload, but not all the time just on and off.

    have just checked the codes there and they have comeback clear.

    its new plugs just fitted, but the rear coil pack was submerged in oil due to a rocker gasket leak. could have been like that for some time. but ran fine before i changed everything. could disturbing the coilpak in its bath of oil cause it to start going faulty? cheers, Tim

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    Regular Member sdemps's Avatar
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    Was it miss firing before you changed the plugs?

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    Regular Member TimTay's Avatar
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    no, was perfect before.

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    Regular Member sdemps's Avatar
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    Not trying to be funny but if it was ok before chances are its something you've done so don't worry i doubt it'll be anything serious. Did you check the spark plug gaps before you fitted them?

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    Regular Member 6009tristanb's Avatar
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    i would put orginal plugs back in and clean coil pack if its not misfiring then you know its the new plugs, have you bought the bosch plugs as it could be a faulty plug i personally carnt stand bosch ever since my ford days when i was young i use to find my orion use to misfire using them since then ive always changed the plugs in any car i buy
    this time around for my gsi ive bought denso ik20 much better in my eyes

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    Regular Member TimTay's Avatar
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    yep bosch super 4's i binned my old plugs just today so no putting them back in. but would a faulty plug not show up a DTC?

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    Regular Member sdemps's Avatar
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    How much of a misfire is it? Is it only under load? Really sounds like a plug or coil.

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    Regular Member Das's Avatar
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    What did the coil packs look like mate? Was there any rust about them? They are really prone to breaking up after time, maybe removing them has pushed one to breaking point. I know DaveDempsey replaced both of his a while back and this cured his.

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    Regular Member TimTay's Avatar
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    its ever so slight misfire normaly seems to happen in second gear around 1500k mark. just a stutter. but if you plant it she goes fine. just away to go get some new plugs the now. just incase one of the bosch ones is being lazy. if it sorts it i shall be sending them back for a ebay refund fingers crossed

    the coil packs looked ok. slight bit of rust where the 2 bolts go thru but that was it. also one of the isolation rubbers had a split in it that was the side full of oil but didnt look to bad after i cleaned it up to be honest.

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    Regular Member sdemps's Avatar
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    Worth a try first. Always start with the easy things!

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