misfire 1 & 3 only
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This is a discussion on misfire 1 & 3 only within the General Maintenance, Troubleshooting & Accidents. forums, part of the Tech & Modifying & General Repairs category; my gf just bought a 05 wrx that was in an accident, and is getting a misfire on 1 &3 ...

  1. #1
    Registered User Fl4toutWrX's Avatar
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    misfire 1 & 3 only

    my gf just bought a 05 wrx that was in an accident, and is getting a misfire on 1 &3 only. rough idle but isnt noticable driving. imma do a compression test, leakdown test and check plugs and coils and also check mechanical timing to see if it jumped. does anyone have any other ideas what it could be?

    i was wondering if timing belt jumped how far would it have to jump to bend valves.
    Last edited by Fl4toutWrX; 04-15-2012 at 06:34 PM.

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    ClubWRX.net Vendor adam@kronosperformance's Avatar
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    Compression test while youre at it. If it was in an accident it could be anything.
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    Registered User Fl4toutWrX's Avatar
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    forgot to mention compression test. thanks for reminding me
    If in doubt, Flatout!

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    Master Baiter EJ257's Avatar
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    ClubWRX.net Vendor adam@kronosperformance's Avatar
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    Quote Originally Posted by Fl4toutWrX View Post
    forgot to mention compression test. thanks for reminding me
    Anytime
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  7. #6
    Registered User Fl4toutWrX's Avatar
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    check timing belt, bank 1 is off by 1 cog
    If in doubt, Flatout!

  8. #7
    Registered User Fl4toutWrX's Avatar
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    replaced timing belt, fired it up and still misfires, did a compression test. came back 150 and 120 with cold motor. swapped plugs and coils, didnt help. spark plugs were a nice brown color so its not running lean and there were not wet or anything so its burning the fuel..

    Still have to do a leakdown test, and is there a way to check cam sensor?


    also If anyone has a coil pack connector for sale let me know.
    Last edited by Fl4toutWrX; 05-11-2012 at 04:19 PM.
    If in doubt, Flatout!

  9. #8
    Registered User Fl4toutWrX's Avatar
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    leakdown test passed. but now after installing new timing belt and having everything timed right, it wont start and if it does it doesnt rev up. unplugging mass air flow sensor doesnt help

    now im getting a cam sensor code, but swapping in new sensor doesnt change anything.

    also now cylinder 2 and 3 misfire. spark is good and swapped in new plugs.
    If in doubt, Flatout!

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