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Check engine light is on

Tiny
ANONYMOUS
  • MEMBER
  • 1996 CHEVROLET SUBURBAN
  • 240,000 MILES
Check engine light is on. Had it scanned and code reads engine misfire. I dont knw where to start any ideas? Need too clear codes too pass emissions. Thax





Tuesday, February 26th, 2013 AT 2:39 AM

1 Reply

Tiny
CARADIODOC
  • MECHANIC
  • 33,916 POSTS
What is the exact code number? That will indicate which cylinder is causing the misfire. Code 300 is random cylinder misfire. Code 301 is cylinder number 1 misfire.

Spark plugs and wires are the most likely suspects, but on high-mileage GM products injectors are common too. If you suspect an injector, swap two of them and see if the misfire moves to the other cylinder.
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Tuesday, February 26th, 2013 AT 2:55 AM

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