Question about 1997 Chevrolet Cavalier

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1997 cavalier. Bad gas mileage and gas smell in engine compartment. Puffs out black smoke on highway. Starts and idles fine. 130,000 miles. Thanks

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  • 2 Answers

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Posted on Jan 02, 2017

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Big Poppa Ma
  • 302 Answers

SOURCE: puffs blue smoke

Blue smoke is caused by engine oil entering the cylinder area and being burned along with the fuel air mixture. As with the white smoke, just a small drop of oil leaking into the cylinder can produce blue smoke out the tailpipe. Blue smoke is more likely in older or higher mileage vehicles than newer cars with fewer miles.

This could mean a cracked head or bad gasket....It costly

Posted on Dec 08, 2008

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  • 740 Answers

SOURCE: 97 cad sls white smoke near windshield smell like rubber burning

If its in the engine compartment there is an antifreeze leak..If it inside the car like like near to the windshield, you have a bad heater core. Good Luck contact me if you need more help.

Posted on Dec 28, 2008

  • 7 Answers

SOURCE: 99 cavalier Smoke coming out from under dashboard!

now this may be a long shot... but i had a similar problem on my cutlass. but it wasnt wiring...... it was from the tube running from the head of my engine...... the smell and smoke were coming from hot oil coming out of the crank case vent tube and then being sucked into the air inlet for the heater/ ac.

since a electrical wire's protective cover is petroleum based as is oil.... they smell very similar

Posted on Jan 14, 2009

  • 36 Answers

SOURCE: 96 gmc suburban 2500 blowing white smoke, bad gas mileage

white smoke indicates a blown head gasket check for milky looking oil on the dipstick

Posted on Feb 13, 2009

  • 7 Answers

SOURCE: rebuilt puffs blue smoke off idle

I agree with csmock132, I would wait till you get some more mileage. But since this is blue smoke and not black or gray it could be rich (too much) fuel. You say "off-idle", does it do it without a load or while accelerating in gear? Maybe the accelerator pump stroke needs to be reduced. Anyway it is better for the engine to be richer than leaner.

Posted on Apr 25, 2009

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For the smoke to occur in the engine compartment it has to be something that occurred external to the engine or an external leak from the engine. White smoke would have been steam and suggest a blown gasket that allowed water to exit the engine. Assuming it was not something that burned it would point to a leakage of oil or perhaps a belt. Two things I would check are the belts and the engine compression. An external oil leak on a hot engine could have made the black smoke and may not show up when the engine is cool. If it is an oil leak you may be able to find out where by putting some paper under the engine and turning the engine over enough to create a drip on the paper.

Also try to remember if you smelled anything when the problem occurred.

This will take your question of the help page so if this doesn't lead to to anything make sure you repost.

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97 cad sls white smoke near windshield smell like rubber burning


If its in the engine compartment there is an antifreeze leak..If it inside the car like like near to the windshield, you have a bad heater core. Good Luck contact me if you need more help.

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