Thread: Heavy Isolated Misfire Under Load

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  1. #161 Re: Heavy Isolated Misfire Under Load 
    GrandPrix Junkie HighOctaneRacing's Avatar
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    IK in very small cases, the FPR can cause misfires if it's failing and same with camshaft sensor but I wouldn't jump on those yet
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  2. #162 Re: Heavy Isolated Misfire Under Load 
    pssssshhhhhhtt Jomamma's Avatar
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    Its just on 1 cylinder though.
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  3. #163 Re: Heavy Isolated Misfire Under Load 
    GrandPrix Junkie HighOctaneRacing's Avatar
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    whoa whoa whoa you haven't replaced the injector o-ring yet????? that'll piss off the PCM. That's a a vac leak that needs to get fixed now
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  4. #164 Re: Heavy Isolated Misfire Under Load 
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    Things you’ve done so far
    -new spark plug
    -new spark plug wire
    -new coil pack
    -swapped injectors
    -check signal to said injector
    -swapped ICM
    -checked valves
    -checked rockers
    -checked pushrods
    -checked lifters
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  5. #165 Re: Heavy Isolated Misfire Under Load 
    pssssshhhhhhtt Jomamma's Avatar
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    Fixed up the vacuum lines and replaced the leaky injector o-ring.
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  6. #166 Re: Heavy Isolated Misfire Under Load 
    GrandPrix Junkie HighOctaneRacing's Avatar
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    and????? any positive results?
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  7. #167 Re: Heavy Isolated Misfire Under Load 
    pssssshhhhhhtt Jomamma's Avatar
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    Not at all.
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  8. #168 Re: Heavy Isolated Misfire Under Load 
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    Unhook battery for 30 mins and let the PCM reset and go from there. Also it's the camshaft sensors job to find cylinder #1 so keep that in mind but do the battery first. If that doesn't work, I can give you a Cam sensor for free just pay shipping.
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  9. #169 Re: Heavy Isolated Misfire Under Load 
    pssssshhhhhhtt Jomamma's Avatar
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    Go from where? The battery's been unhooked about a dozen times now.
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  10. #170 Re: Heavy Isolated Misfire Under Load 
    GrandPrix Junkie HighOctaneRacing's Avatar
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    Damn. So it's still misfiring? The other thing you could do is "rent" a cam sensor from the parts store and put it in. If that doesn't work, just spray some brake cleaner on the new cam sensor and return it lol. Just don't tell them you installed it
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  11. #171 Re: Heavy Isolated Misfire Under Load 
    GrandPrix Junkie HighOctaneRacing's Avatar
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    Scotty, go help Joe
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  12. #172 Re: Heavy Isolated Misfire Under Load 
    Turbo is the way to go. REDCRAPGP's Avatar
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    Quote Originally Posted by HighOctaneRacing View Post
    Damn. So it's still misfiring? The other thing you could do is "rent" a cam sensor from the parts store and put it in. If that doesn't work, just spray some brake cleaner on the new cam sensor and return it lol. Just don't tell them you installed it
    Because parts store employees are that smart..

    Nope just say I didn't end up needing it and never installed it. For all they know it could of been a previous return..
    Squirrels are my engine. I need a Ford Regal
    04 Comp G.
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  13. #173 Re: Heavy Isolated Misfire Under Load 
    pssssshhhhhhtt Jomamma's Avatar
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    Its kinda funny how the aeroforce isn't reporting every misfire. It will say zero when I know there was a burst of misses. Sometimes it says 2, sometimes it says 10.

    Im gonna get a dial gauge and check the lift. http://www.harborfreight.com/clampin...tor-93051.html
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  14. #174 Re: Heavy Isolated Misfire Under Load 
    GrandPrix Junkie HighOctaneRacing's Avatar
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    Do that but Scotty also recommended to swap the rockers. He also said to put the stock rockers back on just to see if the misfire goes away.
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  15. #175 Re: Heavy Isolated Misfire Under Load 
    Turbo is the way to go. REDCRAPGP's Avatar
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    Yea I would throw the stockers back in and see what happens..
    Squirrels are my engine. I need a Ford Regal
    04 Comp G.
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  16. #176 Re: Heavy Isolated Misfire Under Load 
    pssssshhhhhhtt Jomamma's Avatar
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    I swapped the rockers around already.

    I never put the stockers back on though.
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  17. #177 Re: Heavy Isolated Misfire Under Load 
    GrandPrix Junkie HighOctaneRacing's Avatar
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    Quote Originally Posted by Jomamma View Post
    I swapped the rockers around already.

    I never put the stockers back on though.
    I thought you already swapped the rockers around but just wanted to make sure lol
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  18. #178 Re: Heavy Isolated Misfire Under Load 
    pssssshhhhhhtt Jomamma's Avatar
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    But if it were the rockers, I dont think the problem would be on just 1 cylinder.

    If I do swap the rockers to stock can I keep the l76 springs and retainers? And would it be alright just to swap the offending cyl bank and leave the other?
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  19. #179 Heavy Isolated Misfire Under Load 
    Turbo is the way to go. REDCRAPGP's Avatar
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    I would swap at least the fronts.. And yes keeping the l76 springs and retainers are fine..
    Last edited by REDCRAPGP; 11-03-2014 at 07:57 AM.
    Squirrels are my engine. I need a Ford Regal
    04 Comp G.
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  20. #180 Re: Heavy Isolated Misfire Under Load 
    Turbo is the way to go. BillBoost37's Avatar
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    I forget what we think was the initial issue here... but have you case learned it?
    I drink..so consider that when reading my posts.

    2010 Audi A6 Dual IC's
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