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2001 Chevy Blazer FUEL SYSTEM

Tiny
XAVIER33
  • MEMBER
  • 2001 CHEVROLET BLAZER
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 103,800 MILES
My truck sometimes takes along time to start and when I am driving and step on the gas it hesitate I have three codes come up p300-radom misfire, 171-bank one to lean and 174-bank two too lean.
Friday, January 25th, 2008 AT 8:16 AM

1 Reply

Tiny
MERLIN2021
  • MECHANIC
  • 17,250 POSTS
You may have a vacuum leak, get a can of spray gumout, spray the vac lines and maniflod area, when the idle changes, youve found the leak! You want the engine running and spray on the outside but do direct the stream onto the hoses, if it is a vacuum leak, the engine idle will change speed, then you have detected a leak, repair the vacuum leak and see how it runs!
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Friday, January 25th, 2008 AT 2:35 PM

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