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1999 Chevy Suburban misfiring

Tiny
ARCHABALD
  • MEMBER
  • 1999 CHEVROLET SUBURBAN
  • V8
  • 4WD
  • AUTOMATIC
  • 115,000 MILES
My 1999 Suburban with a 5.7 has a intermittent miss. It will do this while accelerating or when I am at a steady speed. I was told it needed a tune up witch I have had done with all AC Delco parts cap wires plugs rotor and fuel filter. But it is still doing the same thing. What should I try next?
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Tuesday, May 18th, 2010 AT 8:11 PM

2 Replies

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Check your fuel pressure and it also could be the spiderweb injectors having a broken or cracked line inside the inlet manifold. It could also be a vacuum leak as well.
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Tuesday, May 18th, 2010 AT 8:39 PM
Tiny
ARCHABALD
  • MEMBER
  • 2 POSTS
Thank you, I will give that a try.
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Wednesday, May 19th, 2010 AT 11:41 AM

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