Smoke when starting 2004 Chevrolet Colorado?

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Ann @ann94518

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Posted: Mar 10, 2013

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Smoke when starting 2004 Chevrolet Colorado?

I have a 04 Chevy Colorado, here lately it smokes when I start it, the weird part about it is that it doesn't do it every time. It can go days without doing it. I have noticed also that it misses, but again this is not a problem happening all the time just once in awhile. I have been told it could be the value seals leaking but no one understands why its not doing it all the time. Any suggestions? I really hate to take it to a dealership and pay all the money if its a simple fix! Thanks :)

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what color is the smoke?

Mar 10, 2013 by mayer

What size engine is it and what type of transmission (AT or MT) Is your oil consumption up? Any service lights on?

Mar 10, 2013 by oldturkey03

well the smoke is white/blue. Its a automatic and the engine size is a 5 cylinder? if that helps. Also the engine light comes on, but then goes off. Had computer read but it only said multi. misfires. And yes the oil consumption is up

Mar 10, 2013 by Ann

Sounds like you are starting to burn some of your oil. I'd start with a compression test and/or a leak down test. You pretty good with tools and working on those engines?

Mar 10, 2013 by oldturkey03

could this also be water vapor?

Mar 28, 2016 by Chester Mckee

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mayer @mayer

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Posted: Mar 10, 2013

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First take it to an AutoZone and request a free computer read out. This may help you to pinpoint the problem.

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What size engine is it and what type of transmission (AT or MT) Is your oil consumption up? Any service lights on? — oldturkey03
well the smoke is white/blue. Its a automatic and the engine size is a 5 cylinder? if that helps. Also the engine light comes on, but then goes off. Had computer read but it only said multi. misfires. And yes the oil consumption is up — Ann
Sounds like you are starting to burn some of your oil. I'd start with a compression test and/or a leak down test. You pretty good with tools and working on those engines? — oldturkey03

Eric Viitala @edesign Rep: 1.8k eDesign Electronics 9 6 4 · Answer 1 · 2016-03-28T20:55:36-07:00

Eric Viitala @edesign

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Posted: Mar 28, 2016

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Autozone can give you a place to start, but you must realize that codes given only tell you the symptoms not the cause. Misfire codes indicate that a cylinder(s) are lacking air, fuel or spark. Your job is to find out which. Compression and leak-down tests are good ideas. Also check the coil(s) and the fuel system. I'm not sure this one can be qualified as a simple fix. You should seek professional help. A good mechanic, not necessarily the dealer, will help you out but it could be expensive. Good luck.

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