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Misfire on all cylinders and code P0300

Tiny
NASER NASER
  • MEMBER
  • 2012 CHEVROLET CAMARO
  • V6
  • 2WD
  • AUTOMATIC
  • 172,000 MILES
I am debating whether to take a chance on this car and buy it. It's in good shape overall, check engine light on, shows misfire on all cylinders plus p0300, not running rough that bad actually. It also has a camshaft code that I cannot remember the code right now. Is it possible for a camshaft code to cause it to misfire on all? Is this something common that you seen on these cars?
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Sunday, May 10th, 2020 AT 12:17 PM

1 Reply

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good afternoon,

The most likely cause is low fuel pressure causing this issue. There is not enough fuel in the rails for proper fueling.

https://www.2carpros.com/articles/engine-misfires-or-runs-rough

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

https://www.2carpros.com/articles/how-to-replace-an-electric-fuel-pump

I would have that fixed first before committing to a purchase. Whoever is selling already knows what is wrong and sounds like they do not want to fix it.

Yes, it is a deal breaker.

Roy
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Sunday, May 10th, 2020 AT 2:57 PM

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