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1996 GMC Safari code P0300

Tiny
JDNORTHRUP
  • MEMBER
  • 1996 GMC SAFARI
  • V8
  • 4WD
  • AUTOMATIC
  • 205,550 MILES
Just replaced head and did complete tune up and don"t know where to go next? Car has random misfires on idle

updated 2-5-09
already did that but it seems like it is running to rich
Tuesday, February 3rd, 2009 AT 6:47 PM

2 Replies

Tiny
BMRFIXIT
  • MECHANIC
  • 19,053 POSTS
Check valve adjustment
and springs
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Tuesday, February 3rd, 2009 AT 7:30 PM
Tiny
BMRFIXIT
  • MECHANIC
  • 19,053 POSTS
Please hit replay so I know you had updated

next is cylinder balance test and catalytic converter test
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Wednesday, February 4th, 2009 AT 8:01 PM

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