1986 CHEVY SUBURBAN KNOCKS AND PINGS

  • Tiny
  • kwstine86
  • 1986 Chevrolet Suburban

Engine Performance problem
1986 Chevy Suburban V8 Four Wheel Drive Automatic 93000 miles

my 86 chevy K20 is knocking and pinging and I have never had a problem with it doing this befor on 87 octane I recently rebuilt the carb could it be running to lean or timing advanced to far?

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Friday, June 11th, 2010 AT 2:54 PM

1 Reply

  • Tiny
  • mhpautos
  • Expert
  • 30,561 posts

Hi there,

you need to check mixtures, timing, vacuum leaks, distributor operation, start here.

Mark.

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Saturday, June 12th, 2010 AT 6:48 AM

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