Troubleshooting

SONOMA

MEMBER
1996 CHEVROLET ASTRO
6 CYL
2WD
AUTOMATIC
245,000 MILES

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.

Tuesday, February 1st, 2011 AT 3:14 AM

3 Replies

OBXAUTOMEDIC

MECHANIC
3,711 POSTS

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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Tuesday, February 1st, 2011 AT 3:26 AM

SONOMA

MEMBER
2 POSTS

I checked the spider it is fine I put fuel pressure tester on it did bleed down. Any other ideas?

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Tuesday, February 1st, 2011 AT 3:55 AM

OBXAUTOMEDIC

MECHANIC
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

.

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Tuesday, February 1st, 2011 AT 1:31 PM