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1997 4.3 fuel foul sprk plugs

Tiny
CLAY W EATON
  • MEMBER
  • 1997 CHEVROLET CHEYENNE
  • 6 CYL
  • 2WD
  • AUTOMATIC
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
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Wednesday, January 5th, 2011 AT 9:01 PM

4 Replies

Tiny
RASMATAZ
  • CERTIFIED MECHANIC
  • 75,998 POSTS
If its the spider injection-check the fuel pressure regulator and the nut kit-under the upper plenum if its leaking
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Wednesday, January 5th, 2011 AT 9:36 PM
Tiny
CLAY W EATON
  • MEMBER
  • 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
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Thursday, January 6th, 2011 AT 7:10 PM
Tiny
CLAY W EATON
  • MEMBER
  • 10 POSTS
Also checked the fuel pressure 65 psi
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Thursday, January 6th, 2011 AT 7:11 PM
Tiny
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
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Saturday, January 8th, 2011 AT 7:04 PM

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