cylinder 3 and 4 misfire

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Jan 9, 2012 | 06:35 PM

usmcvolvos40

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cylinder 3 and 4 misfire

I'm having issues with cylinder 3 and 4. They are getting fule, No spark, both have coil packs on cylinder 3 and 4 but cylinder 1 and 2 work fine.

The catalytic glows red due to the fuel being poured down from no fire in 3 and 4.

thank you

Jan 24, 2012 | 01:37 PM

Counselor828

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Model? Year? Modifications? Codes?

Jan 24, 2012 | 05:35 PM

Hudini

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From: Shanghai, China

I'm guessing bad coil packs. Replace the plugs while you are there.

Jan 25, 2012 | 10:16 AM

erin_sd

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I recently had a misfire issue after I got my spark plugs changed. The coils shorted out and we were only misfiring at higher speeds. So Hudini is probably right, you need new coil packs.