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Shutter Problem

5ky-lin3

By 5ky-lin3,
in Engines & Forced Induction

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5ky-lin3

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Hey guys just have a question about a shuttering sortof problem that I'm having recently.

To give some background I started putting BP ultimate in my skyline and about 2 months later it started shuttering/misfiring once I boost it abit and go over the 4500rpm mark.. I wasn't sure what was wrong and hoped that it wasnt to serious.. I have now had my full exhaust put on so I know its not a flow problem and am thinking that it must be due to the better fuel that it isnt firing as well? I will have a go at regapping the plugs to .8 and hopefully this will fix it? any suggetsions would be great as to what else it could be..

Cheers..

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R3N3

Posted
Posted
Hey guys just have a question about a shuttering sortof problem that I'm having recently.

To give some background I started putting BP ultimate in my skyline and about 2 months later it started shuttering/misfiring once I boost it abit and go over the 4500rpm mark.. I wasn't sure what was wrong and hoped that it wasnt to serious.. I have now had my full exhaust put on so I know its not a flow problem and am thinking that it must be due to the better fuel that it isnt firing as well? I will have a go at regapping the plugs to .8 and hopefully this will fix it? any suggetsions would be great as to what else it could be..

Cheers..

sounds like a coil pack issue. they are prone to getting hairline cracks. you can replace them or repair them. have a search, there's a few threads on how to fix them.

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https://www.sau.com.au/forums/topic/335928-shutter-problem/#findComment-5434932
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5ky-lin3 Collaborator

5ky-lin3

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cool.. If the regap doesnt work ill check the coilpacks and prob just buy new spits... I'm still running stock boost atm 5-7psi and its onle when it goes to that 7psi point... cheers for the help!

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