Excessive gas usage, blowing white gas smelling exhaust, black carbon build up out exhaust,

1992 BUICK
10,000 MILES
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D55PRICE
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  • 1 POST
I have a 1992 bravada 4.3 vortech, I replaced plugs, cleaned oyxgen sensor, what else can it be?
Dec 15, 2011 at 8:31 PM
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RASMATAZ
  • ✓ASE Certified Mechanic
  • 75,992 POSTS
  • ASE Certified Mechanic
Sounds like the spider assy under the upper plenum is leaking open it up and investigate
Dec 15, 2011 at 9:00 PM
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