Have code miss fire number 7 replaced plugs.

Tiny
DONS87
  • 1996 GMC VAN
  • 162,000 MILES

Have code miss fire number 7 replaced plugs wires distributer cap and ingnition coil still miss fire no 7 please help

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Friday, January 25th, 2013 AT 8:18 PM

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Tiny
JDL
  • EXPERT
  • 16,281 POSTS

Did you visually check for spark at the spark plugs? Any driveability issues? Use a gage and check fuel pressure. Check fuel injector. Just about anything can cause a misfire. Spark-- fuel-- compression.

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Friday, January 25th, 2013 AT 9:14 PM

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