CHEVY KNOCKS AND PINGS

1986 Chevrolet Suburban

Tiny

kwstine86

June, 11, 2010 AT 2:54 PM

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?

FOUND 288 RELATED QUESTIONS

4.2 Pinging

13 ANSWERS
6 IMAGES

1 Answer

Tiny

mhpautos

June, 12, 2010 AT 6:48 AM

Hi there,

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

Mark.

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