What is a PO300 or PO301 random misfire code?

Tiny
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  • 2001 CHEVROLET SILVERADO
  • 250,000 MILES
What is a PO300 or PO301 random misfire code?
Friday, January 4th, 2013 AT 5:27 PM

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Tiny
JDL
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What is engine litre size? How long since overall tune-up? Check for misfire on cylinder # 1. Visually check for spark at the spark plug, engine cranking. If you have good spark, use a gage and check fuel pressure. You may have to check fuel injector, also. Check cylinder compression.
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Friday, January 4th, 2013 AT 5:52 PM

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