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Cleaning/servicing Coil Packs


Godzillr
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My car is misfiring on idle and my mechanic thinks that the coil packs need to be cleaned.

I was thinking of doing this myself over the weekend.

Can anyone shed some light on what I need to do i.e. remove coil packs, open them up? clean with electrical cleaner?

Also, why I am there I am thinking of doing a health check on them. Is there anything I need to look out for such as hair line cracks or running a voltmeter on them?

Thanks in advanced.

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Thanks guys.

Cleaned them but still got the issue althought perhaps not as pronouced

Symptoms are : slight misfire both hot and cold. Boost doesn't start building until about 3000rpms. Probably two seperate issues but any help would be appreciated.

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