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Smoke from exhaust - Galant Mitsubishi Cars & Trucks

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White smoke is from water in exhaust, usually a blown head gasket

Blue smoke is oil in exhaust, usually rings, valve seal or valve guide wear

Black smoke is a rich fuel condition.

Posted on Oct 12, 2010

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Posted on Jan 02, 2017

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My car has white smoke coming from the exhaust


he causes of white exhaust smoke can vary; however, it is common to see white exhaust smoke when first starting a car, especially on cooler days. This is generally steam caused by condensation. As the engine warms up and the condensation dissipates the white exhaust smoke (steam) is no longer seen. If excessive white exhaust smoke is present well after the engine warms up, it is necessary to have the car inspected for possible internal coolant leaks. Indicators of an internal coolant leak include billowing white exhaust smoke accompanied by a sweet odor or a low coolant reservoir level. An internal coolant leak can also contaminate the engine oil giving it a frothy, milky appearance. Even small amounts of coolant entering the combustion chamber will produce white exhaust smoke.
One of the main causes of white exhaust smoke and coolant loss is a cracked or warped cylinder head, a cracked engine block, or head gasket failure caused by overheating. A cracked head may allow coolant to leak into one or more cylinders or into the combustion chamber of the engine. Dirty coolant, a poorly maintained cooling system, a low coolant level, or a non-functioning cooling fan can cause engine overheating. In addition, engine wear can eventually cause the gaskets to lose their capacity to seal properly allowing internal coolant loss. Intake manifold gasket and head gasket failures are two of the most common sources of internal coolant loss caused by engine wear.
Never remove the radiator cap or coolant reservoir cap while the engine is hot or running as it can cause serious injury; always allow the car to cool down completely first. Checking for a low coolant level in the reservoir is the first step in determining if coolant loss is causing the white exhaust smoke. If the coolant reservoir is at the proper level but excessive white exhaust smoke is present, a cooling system pressure check is required to determine where, if any, coolant leaks are located.

Nov 17, 2016 | Cars & Trucks

2 Answers

Will only stay running on revs over 2000rpm if I take foot of peddle it cuts out also white smoke from exhaust


What is year--make--model?
Are you losing coolant? The white smoke may be coolant in the combustion cylinder, possibly caused by a head gasket problem. If head gasket problem, fix that first.

With idle issues, clean/check anything that has to do with idle air system. Any applicable trouble codes?

Nov 28, 2015 | Cars & Trucks

1 Answer

There is fire & smoke coming up the exhaust


Smoke - Joseph Auto Service

www.josephautoservice.com/faq_smoke.html
Description of problem: You notice a grayish smoke coming from the exhaust when you start your ... However, if the smoke continues after the engine is warmed up, there is a problem. ... Do not look for the problem while the fire is still burning.
images for fire & smoke coming up the exhaust

Oct 31, 2015 | Cars & Trucks

2 Answers

Why bmw x5 battery drain fan not working exhaust blowing out white smoke... what may be happening.


White smoke out of the exhaust indicates moisture (water) in the exhaust. If the car is not driven very far each day, some moisture will collect in the muffler and cause white smoke for a short while after starting. If the smoke is continual, however, you need to watch you coolant level as you may have a blown head gasket.

Jan 13, 2015 | BMW Cars & Trucks

2 Answers

Why is my 2000 kia sephia blowing blue smoke from the tailpipe. it has 86,000 miles. the check oil warning light is on even though the dipstick reads full.


The most common cause of blue exhaust smoke is oil leaking past engine seals and into the cylinders where it then mixes and burns with the fuel. This is most frequently seen in older or high mileage cars with worn seals and gaskets. It only requires a very small amount of oil leaking into the cylinders to cause excessive blue exhaust smoke.

Blue exhaust smoke only at start-up can indicate worn piston seals or damaged or worn valve guides which may also cause a rattling noise. An external engine oil leak can drip onto hot engine and exhaust parts causing what appears to be blue exhaust smoke. Other possible causes of blue exhaust smoke include: piston wear, worn valve seals, a dirty or non-functioning PCV valve, worn piston rings, an intake manifold gasket leak, worn engine oil seals and possibly even head gasket failure.

Oil leaking into the cylinders can cause a rough idle, misfire and fouled spark plugs. In addition, a reduction in power and oil loss can be indicators that the blue exhaust smoke is caused by an internal engine oil leak. Internal engine oil leaks can also allow fuel to mix with the oil in the crankcase which will degrade the oil and prevent it from adequately protecting the engine.

Operating a car with a severely dirty oil filter, air filter or improperly functioning PCV valve can also sometimes result in engine oil blow-by, oil loss and blue exhaust smoke. Periodically checking the engine oil level with the oil dip stick will indicate if there is excessive oil consumption. Higher viscosity engine oil can sometimes temporarily reduce the amount of blow-by; however, this is not generally recommended. Excessive blue exhaust smoke indicates a possible internal engine oil leak that should be inspected by an ASE certified mechanic.

Dec 08, 2014 | 2000 Kia Sephia

1 Answer

EXHAUST TROUBLE SHOOTING


If smoke is black indicates too much fuel
If smoke is white Could be coolant in the exhaust system
If smoke is blue possible excessive oil entering in the combustion system
Also if you have an automatic transmission with a vacuum modulator, it could be leaking transmission into the combustion
If you have too much oil in the engine, it will also smoke

May 06, 2013 | 2007 Honda Accord Sedan

1 Answer

Black smoke from exhaust 2004 accord


Black smoke is burning oil.White smoke is due to water getting in to a cylinder from a bad gasket, cracked block or a cracked head. cracked heads.


Jan 18, 2012 | Honda Accord Cars & Trucks

2 Answers

Exhaust smoke definitely not steam. Someone opined that it may be related to the turbo/exhaust system. What do you think?


A worn turbo or broken would create smoke. Blue or Gray smoke is either worn rings or a clogged PCV. White smoke is from foreign fluid entering the engine. Typically indicative of a head gasket leak. Black smoke is Leaking injectors or an ignition problem or an issue with the turbo.
If you are experiencing a loss in power then you most likely have a worn turbo bearing.

Sep 16, 2011 | Volvo S60 Cars & Trucks

1 Answer

Execessive smoke with startup visual inspection oil in exhaust


Blue smoke? how does the car run? blue smoke out of the exhaust would indicate a problem either with valve stem seals, worn piston rings...

toyotas are known for that, and if it has alot of miles then its normal

Apr 04, 2010 | 2000 Toyota Corolla

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