Question about 2005 Chevrolet Aveo

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Car smoking after sitting for several hours

When i start my car up after it sitting for several hours it smokes but after it has been running it does not smoke , what could be wrong, it is a 2005 chevy aveo with 113,000 miles on it. i got a guy to look at it and he thinks it needs a valve cover gasket , is this a symptom. just got the car serviced but there is oil on the gasket cover .

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  • Chevrolet Master
  • 21,873 Answers

First thing I need to know is where you are seeing the smoke.
Under the hood, out the exhaust pipe, or from underneath the car ??

Posted on Jan 10, 2013

  • 2 more comments 
  • Tina Webster Jan 11, 2013

    it is coming out of the exhaust pipe when i start it up after sitting for about 8 hours when start to leave work

  •  Stephen
    Stephen Jan 11, 2013

    Then I would say you have something going on with the engine, such as a leaking head gasket or valves depending on if the smoke is white or blue. White is burning coolant and blue is burning oil.

  • Tina Webster Jan 12, 2013

    it looks blue to me , am having a trusted machanic to check it out Tuesday , my husband checked the oil and he said it was full of oil but am going to have him check it again Sunday to make sure

  • Tina Webster Jan 20, 2013

    found out it was the valve cover gasket , thanks alot for your comments

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Posted on Jan 02, 2017

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Thunder55
  • 318 Answers

SOURCE: Heavy Smoke

Yeah,,your engine is showing signs of wear, if it blows a lot of oil out the back end after sitting at a light or stop sign,,then that is a sure indicator of Valve seals needing replacement,,,but it also sounds like your engine is worn out Piston Rings and all.
You could try a product which is used on just about every drag racing strip,,it's called Lucas Oil treatment,,,i don't promise that it will solve all your problems,,,but if it don't help,,it sure wont hurt.

Best of luck to ya.

Posted on Jan 19, 2009

  • 6982 Answers

SOURCE: 1989 1500 5 spd. 4x4. Burns a Qt oil every 200/300

You are likely correct in the valve guide thing...A little known fact about chevy smallblock engines is that when first introduced as the 265, the cam profile was different than the later versions (283 and up) Because of the different profiles in the later engines, the valve stem gets shoved against the guide as it goes up and down, causing it to wear. If the problem was a bit worse, likely they would have changed the position of the rockers but it wasn't so they didn't.
The stem seals are a simple "o" ring. Replacing them if the guides are worn is useless. (if they were a better design though likely the guides would wear faster so they are actually good in that respect)
What you need to do is to remove the heads and have the guides replaced. BUT, I'd first remove the valve covers and make sure the oil returns at the ends of the oil galleys in the heads aren't blocked with gunk. If they are, oil will pool up inside and run down the guides. In most cases, if they are blocked, simply clearing them will get your oil consumption back to within the "normal" range.

Posted on Dec 05, 2010

  • 480 Answers

SOURCE: if the oil on my 2006 chevy aveo was overfilled

i use brake cleaner or even a electronic parts cleaner to clean leaking oil out of spark plug holes and off the plug wires as well and when your done start the motor and run it till it stops smoking the you will be fine.

Posted on Jan 06, 2011

Testimonial: "will let you know how everything works out . thanks"

  • 492 Answers

SOURCE: Chevy Prizm or Toyota Corolla 2000 valve cover

The valve cover gasket isn't hard to change. Oil on the plugs indicates a more serious problem. Smoke from the exhaust would be from rings, rich mixture, worn valve guides. It may be that the engine is overfull (that would show on the stick). Oil loss from a leaking gasket would smoke under the hood and leave oil on the engine and the ground.

Posted on Mar 25, 2011

Testimonial: "Thanks a lot for your comment."

  • 10 Answers

SOURCE: Yessterday a dealership replaced my

Smoke could be from hose clamp on hose not tight enough otherwise possible intake gasket problem, trans fluid should be red and if it is just a hint of browned and probably just needs a flush but if it is dark brown black something goin on with trans, and the motor oil you would have to pull the dip stick to see the level of oil

Posted on Apr 07, 2011

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