Question about 1989 Ford Bronco II

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Black smoke out of the tail pipe - 1989 Ford Bronco II

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  • 132 Answers

Burning oil or burning really rich could have a cylinder not firing putting gas in the exahst and its burning in there.

Posted on Nov 09, 2010

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Posted on Jan 02, 2017

stormbrewin
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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

stormbrewin
  • 426 Answers

SOURCE: f-150 4.9 lt .once it starts, blowing heavy black smoke

Sounds like its flooding(excess fuel)Try squeezing the main fuel line enough to allow enough fuel through for engine to run smoothly if that improves running of engine either fuel pump needs replacement or pressure relief valve has failed or has no vacuum to activate it.Dirty or failing injectors can also cause your problem,try putting a can/bottle of injector cleaner in fuel tank to see if it improves running of engine.Air flow meter can also be an issue.A few potential reasons foryour problem and too hard to lock it down to a single cause without the vehicle being in front of me to do the appropriate tests so have just provided the basic causes and hope your able to take it from here and solve the problem.Good luck

Posted on Dec 26, 2008

  • 1043 Answers

SOURCE: 2001 E220 CDI exhaust tail pipe black smoke on acceleration

Black smoke is almost always an indication that the air/ fuel mix (ratio), is too rich. I would try to find out if the just cleaned the injectors or were they replaced. Cleaning injectors and sometimes leave irregularly shaped orifices. Besure the air filter is clean. This can effect mix also.
Good Luck and hope this helps.

Posted on Mar 14, 2009

  • 9 Answers

SOURCE: runs rough, black smoke, computer bank 1 burning too lean

Sounds like bad injectors, bad O2 sensors, and or too much fuel psi. Check the fuel psi against what the service manual says. If the fuel psi is too high, your regulator is bad. If the fuel psi checks out ok, you likely have a bad O2 or bad fuel injector(s).

Posted on Apr 15, 2009

  • 9 Answers

SOURCE: blue smoke from tail pipe 98 neon no leaks i can see

It sounds like you could need some new piston rings. when they go bad it causes oil to get by into the combustion chamber and burn when the engine fires.

Posted on May 01, 2009

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Engine run rough and black smoke coming from tail pipe why?


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what smokes. we are blind here.
you must stay.

1: end of tail pipe smokes
2: or, with hood up the exhaust manifold smokes due to oil we dropped there. (common on much service)
and what color is it.?
from where.?
tail pipe can do 3 colors
white goes away fast ,called steam.
white stays way too long called burned oil smoke,
and black (unburned fuel) and smells like gas..

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white, oil, burning, take for ever to go away
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and all carbs smoke black in the tail pipe end, when cold, unless
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Are you saying you have smoke coming out of the tail pipe ? Or is something dripping onto the exhaust pipe and burning ?
If the smoke is coming out of the tail pipe, is it blue, white, or black ?

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BLACK SMOKE AND MY TAIL PIPE IT IS MIXED WITH OIL


If you are adding oil to the engine I would say the rings or valve guides are worn out. Could also be a problem with the PCV valve.
Black smoke is usually too much fuel, blue smoke is usually burning oil.

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Jul 30, 2009 | 2002 Saturn L-Series

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2001 E220 CDI exhaust tail pipe black smoke on acceleration


Black smoke is almost always an indication that the air/ fuel mix (ratio), is too rich. I would try to find out if the just cleaned the injectors or were they replaced. Cleaning injectors and sometimes leave irregularly shaped orifices. Besure the air filter is clean. This can effect mix also.
Good Luck and hope this helps.

Mar 14, 2009 | 2001 Mercedes-Benz C-Class

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