Question about 1987 Ford Econoline

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460 eng burns to much fuel and blows black smoke. 1987 e 350 . burns rich

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Thats a HUGE engine and will **** a ton of gas!!! but if ts using more than normal,along with theblack smoke,tells me you have some valves with alot of carbon buid up on them.you can spend 100s removing the heads and sericing the engine....but i would warm up the engine...have a friend give it some gas to keep the RPMs up while you SLOWELY pour a ite stream of water into th carb. it will spit and sputter while you do this,dont be scared...tats normal,then have your friend rev the engine while you do a bit more. while you do this,you will see a ton of black smoke out the exhaust. what your doing is heating up the valves,and when water hits thm, it busts that build up off,and it burns giving you some black smoke. continue to do this till the smoke changes color,and then you will have fixed it. its a trick i used years ago...and never failed!!!

Posted on May 01, 2010

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Check the map sensor,this will cause this problem

Posted on May 01, 2010

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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:
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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.

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Any smoke coming from your car's exhaust pipe is a sign that your car is in distress. Pay attention to what it needs to ensure more miles for your vehicle.

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Black exhaust smoke


black smoke is the vehicle is running rich, to much fuel. excess fuel enters the cylinder and does not burn completely. poor fuel milage is also a common complaint when black smoke comes out tailpipe. ( its running rich ). have a good day !

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My smoke comes through my pipe


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What can i do? my galant is blowing black smoke at my tail pipe


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What would cause smoke to come out the exhaust pipe


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Rich fuel=black smoke.
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