1997 4.3 fuel foul sprk plugs

1997 CHEVROLET CHEYENNE
6 CYL • 2WD • AUTOMATIC
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CLAY W EATON
  • MEMBER
  • 10 POSTS
1997 4.3 runs bad audible miss fire foul plugs 1 and 2 cylinder compression 154 on 2 and 170 on 1 plugs changed cap and rotor changed underload engine back fires and misses
Jan 5, 2011 at 1:01 PM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 POSTS
If its the spider injection-check the fuel pressure regulator and the nut kit-under the upper plenum if its leaking
Jan 5, 2011 at 1:36 PM
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CLAY W EATON
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  • 10 POSTS
I have the upper plenum off how do i check the spider injectors now and what nut are you talking about and dont tell me the nut behind this question
Jan 6, 2011 at 11:10 AM
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CLAY W EATON
  • MEMBER
  • 10 POSTS
also checked the fuel pressure 65 psi
Jan 6, 2011 at 11:11 AM
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CLAY W EATON
  • MEMBER
  • 10 POSTS
after replacing the spider injector assembly it still ran the same way went back to parts store and got another distributor cap and its running great whodathought that a new cap would be defective
Jan 8, 2011 at 11:04 AM
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