Question about 1999 Chevrolet Blazer

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Hesitating & Backfireing and Engine light comes on

On Start Up, car hesitates to take gas and then backfires about 3 time ,,,then runs Ok..Engine light comes on says to check engine soon... also fuel gage shows empty when full tank and when half full shows full..Have put Dry gas in tank no help Car has 54000 miles on it mostly in town WE have had maintance done on it every year change oil and all the rest...If I start it and let it Warm up for about 5 minutes it seems to be OK
Bob Kuhl kuhl-kat@suddenlink.net

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On your last tune up you might have gotten some bad plugs i know they are new but sometimes they dont work straight out of the factory and your fuel guage connections are backwards

Posted on Nov 03, 2008

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Having said that, given what you've already checked and believe to be OK, I'd take a look at timing if I were you.

Could be a timing chain has either loosened or broken, allowing camshaft to get out of time relative to crankshaft. This could cause the backfire you describe.

However, before you go that far....after putting in the new plugs are you positive you got the spark plug wires correctly located ? Crossed wires could also cause a backfire.

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I also recommend checking and running a teat on the PCV valve and inspect the PCV hose as well. it could have a leak or a small crack on it.

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Please rate and god bless:)

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