Question about 1994 Ford F350 Crew Cab

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Why is my 7.3, 2000 smoke gray. when i come to a stop.

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When you decelerate your valve guides **** oil/air down through the guides so the smoke produced is grey...could also be the crankcase breather blocked (if fitted).

Posted on Oct 01, 2010

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Posted on Jan 02, 2017

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I'm looking to purchase a used car. I've been doing online research and saw this webpage http://www.usedcarsmells.com . They talk about exhaust color and smells. Is it true that you could tell a lot about...


Yes this is correct, you can get important information from the colour of smoke from the exhaust:

Blue/Gray Smoke: Blue/gray exhaust smoke is an indication of oil burning in the combustion chamber. These are possible symptoms and causes:
Valve Seals: Leaking valve seals will cause blue/gray smoke at startup because oil leaks past the seals into the cylinder after the engine shuts down.
Valve Guides: Excessive clearance between the valve stem and the valve guide allows oil to leak past the gap into the cylinder.
Piston Rings: Worn or damaged piston rings will cause blow-by resulting in blue/gray smoke.
Worn Cylinder Walls: Worn cylinder walls cause blow-by resulting in blue/gray smoke.
PCV System: A stuck closed PCV valve will cause excessive crankcase pressure resulting in blue/gray smoke.
Black Smoke: Black exhaust smoke is an indication of a rich fuel condition. These are possible causes:
Fuel Injectors: A leaking or dripping fuel injector will cause a rich fuel condition.
Fuel Pressure Regulator: A stuck closed fuel pressure regulator will cause a rich fuel condition.
Fuel Return: A restricted fuel return line will cause a rich fuel condition.
White/Gray Smoke: White exhaust smoke is an indication that coolant is burning in the combustion chamber. These are possible causes:
Cylinder Head: A crack in the cylinder head (around the coolant jacket) will cause coolant to enter the combustion chamber.
Engine Block: A crack in the deck of an engine block near the coolant jacket will cause coolant to enter the combustion chamber.
Head Gasket: A damaged or blown head gasket will cause coolant to enter the combustion chamber resulting in white/gray smoke coming from the tailpipe.

Jan 17, 2015 | Cars & Trucks

1 Answer

What can be done to stop it from smoking so much?


if your engine's smoke is black or gray or bluish, then there is an oil leak. caused either by faulty valve guides / valve seals or piston rings.

if your engine's smoke is white, then there is water leak. common cause is blown head gasket

May 18, 2012 | 2000 Chevrolet Blazer

1 Answer

Upon starting the 1995 Camry the engine dies. There is also grey smoke coming from the tail pipe. Checked the oil and there is no water in it.


Is it gray, bluish gray, or white? White smoke, during warm weather, indicates that you have a head gasket out and it's vaporizing water, it will look much like it does when you first start it on a cold day. Bluish gray indicates burning oil, which could be bad valve seating, severe engine wear on your piston rings and oil is blowing past them into the combustion chamber. Grey smoke is probably water as well, though it could be contaminated with oil, or the vehicle could be running too rich, getting too much gasoline. But typically this is more of a black smoke than gray.

Nov 10, 2009 | 1995 Toyota Camry

1 Answer

I have a 96 on p 3.1.it felt slugish and starte 2


I rekon yer turbos gone on the inlet seal side , pop the pipe from the aircleaner off and see if the turbos shaft moves up n down - engine stopped.

Aug 06, 2009 | 2000 Isuzu Trooper

1 Answer

Gray smoke from exhaust from 6.0 diesel


From my experience gray or white smoke means a blown head gasket. Check the oil and see if there is any water in it. You can also check radiator and see if there is any oil in it too. Hope this helps

Aug 23, 2008 | 2004 Ford F250

1 Answer

Smoke


why kind of smoke is it? sweet smelling smoke? bluish gray smoke? rotten egg smoke?

Aug 19, 2008 | 2000 Lexus RX 300

3 Answers

2000 dodge caravan 3.3l engine


Your engine is toast. The black smoke indicates more than likely your valve seals are leaking oil into the combustion chamber or the piston rings are shot.

Time for a new vehicle...

Aug 16, 2008 | 2000 Dodge Caravan

1 Answer

Gray smoke


i have a vauxhall combo 2003 deisel excessive smoke and lack of power can you help

Jul 24, 2008 | 1994 Lexus Es 300

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