troubleshooting

1996 CHEVROLET ASTRO
245,000 MILES • 6 CYL • 2WD • AUTOMATIC
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SONOMA
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  • 2 POSTS
im working on a 1996 astro van 4.3L it has a misfire on cyl 6 i have done everything i could think i did compression test, plugs,wires, cap,rotor,cam sensor,cyl balance test,checked intake for leaks,also tryed coil,fuel pressure test,
Feb 1, 2011 at 3:14 AM
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OBXAUTOMEDIC
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Hello,

Ok, on that year the Spider Assembly has been known to fail, and of course you have to replace the hole assembly. Pics of assembly below...

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Feb 1, 2011 at 3:26 AM
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SONOMA
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i checked the spider it is fine i put fuel pressure tester on it did bleed down. any other ideas?
Feb 1, 2011 at 3:55 AM
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OBXAUTOMEDIC
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 3,711 POSTS
Ok, you stated that it "Did Bleed Down" if this is correct then you could have a leaky Injector.

When you changed the Plugs did you make note of what condition each plug was in. If still have plugs check out link below for spark conditions..... Scroll down the page....

https://www.2carpros.com/articles/how-to-change-spark-plugs

.
Feb 1, 2011 at 1:31 PM