engine backfiring

1997 CHEVROLET TAHOE
114,000 MILES • V8 • 4WD • AUTOMATIC
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BUMPERSTICKER8133
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my 1997 chevrolet tahoe with vortec engine is backfiring and has oil in the radiator is it the head gaskets and how much will it cost?
Mar 21, 2011 at 6:17 PM
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RASMATAZ
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Backfiring go to this link: https://www.2carpros.com/articles/what-is-an-engine-backfire, oil in the radiator-Get it block and pressure tested to rule out the headgasket, cracked head or block and an intake leak-
Mar 21, 2011 at 11:34 PM