Monday, March 25th, 2019 AT 1:19 PM
GLENN VAN SCYOC
- MEMBER
- 2003 GMC SIERRA
- 4.8L
- V8
- 2WD
- AUTOMATIC
- 119,000 MILES
Misfire, check engine light.
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Code PO300
2 Replies
SEVAG P
- MECHANIC
- 405 POSTS
Hello thanks for using 2CarPros.
For the fault code p0300 misfire run our guide.
https://www.2carpros.com/articles/engine-misfires-or-runs-rough
Let us know what happens.
thank you.
For the fault code p0300 misfire run our guide.
https://www.2carpros.com/articles/engine-misfires-or-runs-rough
Let us know what happens.
thank you.
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Monday, March 25th, 2019 AT 1:49 PM
SEVAG P
- MECHANIC
- 405 POSTS
Misfire is a result of no proper combustion inside a cylinder that causes absence of spark, fuel or low engine compression.
Check for spark run our guide:
https://www.2carpros.com/articles/how-to-test-an-ignition-system
Check injector pulse run our guide:
https://www.2carpros.com/articles/how-to-test-a-fuel-injector
Check engine compression:
https://www.2carpros.com/articles/how-to-test-engine-compression
Feed back the result we are interested to know the problem.
Thank you
Check for spark run our guide:
https://www.2carpros.com/articles/how-to-test-an-ignition-system
Check injector pulse run our guide:
https://www.2carpros.com/articles/how-to-test-a-fuel-injector
Check engine compression:
https://www.2carpros.com/articles/how-to-test-engine-compression
Feed back the result we are interested to know the problem.
Thank you
Was this helpful?
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No
Tuesday, March 26th, 2019 AT 1:31 PM
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