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1.4 Octavia misfiring (2006)

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  • 13-07-2016 10:57pm
    #1
    gutteruu
    Registered Users Posts: 1,061 ✭✭✭


    Bought it a few weeks ago. Ran perfect until last Sunday when it started misfiring. Put a new coil pack on one of the cylinders and it sorted it perfect. Drove like new for 24 hours. Now its back misfiring. Put a new plug in that cylinder tonight but no joy.

    Any ideas why it would work fine then misfire again? Might not be that coil pack again, didn't check yet. There is what looks like oil under the injector at the back of that cylinder. Hard to see where exactly it is. I have a video if you want it uploaded.


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    #2
    irish bloke
    Registered Users Posts: 2,057 ✭✭✭irish bloke


    Probably another coil pack. Could even be the one you just replaced. Was it an OEM pack you put in?


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    #3
    gutteruu
    Registered Users Posts: 1,061 ✭✭✭gutteruu


    No, a Bosch one. I'll check which one is misfiring today. Hopefully its just the new one.


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    #4
    Renegade Mechanic
    Registered Users Posts: 7,934 ✭✭✭Renegade Mechanic


    gutteruu wrote: »
    No, a Bosch one. I'll check which one is misfiring today. Hopefully its just the new one.

    It's unlikely to be the new coil unless mabye the plug has slipped back; Bosch don't generally do crap. But coils can (albeit rarely) go within days or weeks of each other. It might be another one deciding on early retirement, too.


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    #5
    gutteruu
    Registered Users Posts: 1,061 ✭✭✭gutteruu


    Yep. Ye were spot on. Another coil pack. All sorted now. Thanks


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    #6
    Atlantic Dawn
    Registered Users Posts: 81,184 ✭✭✭✭Atlantic Dawn
    M


    In theory all things being equal the other 2 will likely go soon too, easy enough fix though.


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    #7
    gutteruu
    Registered Users Posts: 1,061 ✭✭✭gutteruu


    Atlantic Dawn wrote: »
    In theory all things being equal the other 2 will likely go soon too, easy enough fix though.

    Thanks for advice. The one that went was the first one I pulled out last time. A mechanic told me he reckons its when people pull them out without the special tool that they get damaged, hence they go in batches. Not sure but for 30 quid each its not too bad.


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    #8
    Renegade Mechanic
    Registered Users Posts: 7,934 ✭✭✭Renegade Mechanic


    gutteruu wrote: »
    Thanks for advice. The one that went was the first one I pulled out last time. A mechanic told me he reckons its when people pull them out without the special tool that they get damaged, hence they go in batches. Not sure but for 30 quid each its not too bad.

    The special tool required is patience :D
    A screwdriver, or better, a snipe nose pliers, will see coils removed for routine plug changes with leverage and patience.
    They can be well stuck it there, so slow and steady wins it. Some lads go mad and crack them, but they are known for simply burning out.
    Renaults do it the whole time too, and with Opels it's even worse...
    Auto-Ignition-Coil-For-Opel-Astra-F-G-III-IV-Combo-Corsa-II-Meriva-Vectra-B.jpg

    One massive block for all four. One section fails and you've to throw out the whole lot... Not as often that they do burn out but it always annoyed me whenever I had to throw one into the bin..


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