Black smoke

1992 CHEVROLET SILVERADO
3,150,000 MILES • 5.7L • V8 • RWD • AUTOMATIC
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JERRY ROGERS
  • MEMBER
  • 1 POST
My truck is putting out black smoke and I only took the spark plug wires off the distributor cap and it took me a while, but I think I have them in the right order what could the problem be?
Sep 13, 2016 at 11:25 AM
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HMAC300
  • ✓Experienced Mechanic
  • 48,601 POSTS
check fuel pressure with a gauge may be a regulator problem you will need an adapter for this so I do not know if auto parts have them or not to rent they do rent gauge. 9-11 psi.

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator
Sep 14, 2016 at 12:15 AM
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