Question about 2003 Jeep Liberty

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I have white smoke coming from the tail pipe and the car shuts off when it is running. It is not overheating at all.

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  • Expert
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Hi!
The only reason for white smoke is rich mixture in the engine. i.e. more fuel and less air....
and when the mixture gets consentrated the engine shuts off.
Reset the mixture by reducing the fuel and increasing air mixture.

Regards
Berry

Posted on Feb 01, 2010

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  • Jeep Master
  • 6,982 Answers

If the smoke is always there, not just on start up, likely it is a head gasket, but still small enough to not be causing an overheat. I'd have a hydrocarbon test done on the cooling system just to be sure. Shutting off while running could be a result of a head gasket problem but there are quite a number of items that can cause that as well. The smoking is of primary concern right now because if you hurt the engine because of a gasket problem, nothing else will matter and, coolant in a combustion chamber can throw sensors out of range and give you false readings while testing them.

Posted on Feb 01, 2010

Testimonial: "Quick and fast thanks."

  • Richard Scordino Feb 01, 2010

    Just a note: White smoke that dissipates quickly is always water or coolant based. A good running engine produces water vapor as a by-product of combustion but the amount is so small that after the engine heats up, except in sub zero weather, you won't see it. White smoke all the time indicates that some coolant is entering one or more cylinders (generally from a failing head gasket) Any good shop will either test for exhaust in the cooling system by using either a dye test (works by a chemical reaction) or with the aid of a "sniffer" that samples the air above the open radiator cap.
    Once exhaust is detected, a compression or cylinder leak down test is sometimes done (I don';t bother as knowing which cylinder has a problem isn't important as the cylinder head(s) need to be removed anyhow, regardless of which cylinder has a problem.
    Cylinder head gasket replacement and diagnosis is not a backyard job unless the person doing it is very experienced. Same applies to diagnosis. You need a good reliable shop with highly experienced techs to do that work.
    Good luck
    Black or grey smoke is either oil or excess fuel being burned in that case it will be relatively easy to identify as it does not readily dissipate in the air and always leaves residue on the spark plug electrodes. (fouling).


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Posted on Jan 02, 2017

stormbrewin
  • 426 Answers

SOURCE: white smoke comes out tail pipe

Its perfectly normal.Hot exhaust gases mixing with cold air and by products of the combustion process create the watery substance that you see spit out .Dual fuel (LPG,Hydrogen etc) vehicles do this a lot more noticably.By products of the combustion process are various but water vapour is one of them.Alot of heat is generated by the exhaust so watching a car driving in very cold conditions you can see this effect more clearly

Posted on Oct 18, 2008

husni_g2002
  • 112 Answers

SOURCE: white smoke coming from the tail pipe

cylinder head valve seals needs to change.

Posted on Jan 17, 2009

wadembly
  • 448 Answers

SOURCE: after car starts white smoke comes out tail pipe

is your coolant level low usally its something in the catalatic converter or a sticky valve what i have alway done to help smoke is a qt. of lucas oil stabalizer to 4 qt.s of oil that help sticky valves oil consumption & helps with cold starts

Posted on Nov 10, 2009

Mickgiever
  • 146 Answers

SOURCE: engine overheated this morning due to cold weather

Sounds like you blew a head gasket.

Posted on Jan 04, 2010

  • 77 Answers

SOURCE: my car has white smoke coming from the tail pipe...

It is burning oil. Possibly bad valve seals or worn rings.

Posted on May 21, 2010

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