Have PO300 code replaced plugs, wires, fuel.

Tiny
BOBKZ1000
  • 1997 CHEVROLET TRUCK
  • 205,000 MILES

Have po300 code replaced plugs, wires, fuel pump, fuel filter inector spyder, fuel sending unit & wires in tank intake plainom gasegtt run all kides of fuel cleaner in it clear codes start it let it run less then a min. Po300 code comes right back

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Tuesday, October 30th, 2012 AT 6:53 PM

2 Replies

Tiny
HMAC300
  • EXPERT
  • 45,785 POSTS

Check fuel pressure first, then check for vacuum leak at manifold. If both of those good then ccheck compression 60-66 psi for anything other than a 7.4l 56-62 for 7.4L

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Tuesday, October 30th, 2012 AT 7:05 PM
Tiny
BOBKZ1000
  • MEMBER

Thanks will get right on it will let you know

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Tuesday, October 30th, 2012 AT 7:10 PM

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