2002 Saturn L-Series Logo

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Posted on Jul 30, 2009
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A/C AND BLACK SMOKE FROM TAIL PIPE.

2002 Saturn L100 A/C blows but want cool the clutch is good, and black smoke from tail pipe when it is runing, is this a sensor?

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  • Expert 226 Answers
  • Posted on Jul 31, 2009
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IT SOUNDS LIKE IT'S EITHER A O-2 SENSOR ,OR THE MAPP SENSOR.HOPE THIS HELPS

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

Go to the wreckers car junk yard and see if you can find another module or buy a new one but yes it sounds faulty... modules are non-serviceable so just get another... Run a code reader just to make sure that it is that module thats faulty
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My 2005 gmc canyon just started blowing smoke out tail pipe but it doesnt do it everytime i start it. is this bad?

Possibly a leak in the head gasket. Take out the plugs and see if they are water wet. Run a compression check.
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White smoke coming out tail pipe

That might be steam, check to see if you are loosing coolant if is loosing coolant but it doesn't leak onto the ground you could have a bad head gasket. It doesn't do it with the clutch in because there is no load on the engine.
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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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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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My 98 firebird tail pipe blows white smoke and water out the tail pipe then as i let it sit for 30 minutes the engine gets hotter then gas like smile and heavier smoke come out the tail pipe it also s

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.


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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.
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a blown head gasket is white smoke from the tail pipe, black smoke is a sign that it is running to rich. yourproblem sounds like a timing problem.
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