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Misfire problems

By Matt Watkins
August 29, 2020 in Advanced Drivetrain, Suspension & Tuning

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Enthusiast

Matt Watkins

Posted August 29, 2020

Posted August 29, 2020

Hey I have a 2010 yukon denali, and I am having a missfire problem that I can't find a source. The missfire is always below 2000rpm and only after its been driven for a little bit. I am not getting check engine light. The misfire is getting worse and I dont know what to do. Any help would be great.

Senior Enthusiast

silveradosid

Posted August 31, 2020

Posted August 31, 2020

what engine do you have and what is the mileage

2 weeks later...

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Matt Watkins

Posted September 11, 2020

Author

Posted September 11, 2020

I have a 6.2 and 15000 easy miles

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diyer2

Posted September 11, 2020

Posted September 11, 2020

If it was me I would do easy first, like fuel system cleaner.

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Enthusiast

Matt Watkins

Posted September 11, 2020

Author

Posted September 11, 2020

I have tried that as well as cleaning the throttlebody. I replaced plugs wires and coil packs. I dont have a check engine light so I am stumped.

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