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white smoke from exhaust

Discussion in 'Engine Tech / Drivetrain' started by vejita1283, Nov 29, 2004.



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  1. vejita1283

    vejita1283 import mechanic and racer 5+ Year Member 10+ Year Member

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    Palmdale, CA
    hey guys, i need some help. 1990 plymouth acclaim..v6 LX


    white smoke comes out when cold or long idle. long idle makes engine warmer then usual. any help would be nice.
     
  2. io_303

    io_303 NIFOC Registered VIP Registered OG 5+ Year Member 10+ Year Member

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    Steady white smoke; warm engine; any air temperature. This is bad news. The engine's coolant is leaking into the combustion chamber and creating a steady flow of steam. Caused by a leaking head gasket or a crack in a cylinder head, most commonly in the exhaust port area. Usually requires serious surgery on the engine.

    Puff of white smoke during cranking, before the engine starts; cold engine; gas or diesel. This smoke is unburned fuel vapor being pumped out the exhaust pipe. The white is tiny droplets of fuel. In a gas engine, the spark plugs aren't firing, or the fuel mixture is too rich to ignite. It may mean the choke plate is stuck closed, or a load of bad gasoline. In a diesel, this cranking smoke indicates defective glow plugs, but may also come from low compression caused by worn rings or valves.
     
  3. 97BlackCivic

    97BlackCivic New Member 5+ Year Member 10+ Year Member

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    from what ur sayin it sounds like a blown head gasket.
     
  4. HiGH_CiTY

    HiGH_CiTY Lock It Up! Registered VIP 5+ Year Member 10+ Year Member

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    u should be able to smell the coolant if that is what is burning and the car will eventually overheat once the coolant level is low . . . . . . get a leak down test done
     
  5. J32a2OwnsU

    J32a2OwnsU Resident Old Man Registered VIP Registered OG 5+ Year Member 10+ Year Member

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    Yeah sounds blown HGasket. Those cars are notorious for doing that to.. isnt that a 3.0 or 3.5L motor.......?
     
  6. nd4sped

    nd4sped Banned

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    You got coolant getting into the combustion chamber. There are many ways that it can get in there also.

    Dosent necasarily mean a head gasket is blown. THough that may be the case. You could have bad valve seals.
     
  7. 98_4door

    98_4door Sexy Cabana Boy Registered VIP 5+ Year Member 10+ Year Member

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    those are some strong little engines
     
  8. terceltyler

    terceltyler The Silver Bullet Registered VIP 5+ Year Member 10+ Year Member

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    so a bit of exhaust is bad is what it sounds like 1o_303 is trying to say. my moms car and everyone elses car here smokes a little when you 1st start it up in the cold. leaking coolant has a very distinguised smell too..like something burning almost like rubber......kinda
     
  9. wildest5

    wildest5 B16a1 CRX Si Registered VIP 5+ Year Member 10+ Year Member

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    sell it quick
     
  10. vejita1283

    vejita1283 import mechanic and racer 5+ Year Member 10+ Year Member

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    oh...ALOT of water is leaking out of the exhuast, but its clear, not murkey or yellowish(coolant)
     
  11. Doms_EJ2

    Doms_EJ2 New Member 5+ Year Member 10+ Year Member

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    White smoke. Most of the time means your piston rings are gone......
     
  12. cheezeonmakneez

    cheezeonmakneez love unicorns Registered VIP Registered OG 5+ Year Member 10+ Year Member

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    sell it to a junk yard, j/p if water is coming out your exaust you could have a cracked block or head or a bad head or intake gasket. check to see if you got water in your oil if so i highly reccoment drain the fluids and chase the water with wd40. ( spray it in the spark plug holes) this will save whatever is left of your piston rings. if you let the water stay in the cylinder's in the next month you will notice particles of your piston rings flying out of the tail pile. water will rust the hell out of them and then your due for a rebuild.
     


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