Question about 1997 Chevrolet Suburban

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PINGING ON A 1997 3/4 TON SUBURBAN

THIS TRUCK PINGS FROM TIME TO TIME. HAVE TRIED DIFFERENT GAS, COMPLETE TUNE UP,MSD COIL AND 6AL WITH NO LUCK.

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  • Bruce Bracey
    Bruce Bracey May 11, 2010

    Has the engine been altered in any way other than the MSD coil installlation?

    Does the "service engine light" come on?

    Was the different gas a higher octane or brand.



    Based on your description, it sounds like you may have and "knock" sensor circuit issue.

    Let me know.

    Regards,

  • peewee82967 Sep 02, 2010

    1997 SUBURBAN COMING BACK FROM FLORIDA ALL OF A SUDDEN IT STARTED TO BACKFIRE THROUGH THE INTAKE AND SLOWED TO A CRAWL. PULLED OVER AND CHECK WIRES TO MAKE SURE THEY WERE ALL CONNECTED AND STARTED TO TAKE OFF AND IT STILL BACKFIRES THROUGH INTAKE BUT IF YOU STEP ON IT VERY VERY LIGHTLY IT WILL CRAWL UP TO SPEED.

    A BUMMED OUT SUBURBAN OWNER...

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  • 299 Answers

Over heat condition or sticking egr valve can also cause this.

Posted on Jun 18, 2009

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  • 321 Answers

Valve ping is common there are only just a couple of ways to handle it.you will need to use supper unleaded or ****** the timing just a very little bit.unlead is unlead no matter were you get it from.
run the tank to emply without running out of fuel and fill the tank with super.
if the ping is not gone after 5 miles then ****** the timing just a very little bit at a time.
hope this helps
thank you
jm

Posted on Jun 18, 2009

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