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It usually means too much fuel or not enough spark.

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Juliet Olson

Lvl 13
3y ago

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What causes black soot from exhaust?

burning oil


Why is black smoke and soot coming out of your tailpipe?

running too rich check the air filter could also be defective injectors


What causes a 95 ford contour to blow black and blue smoke that alternates along with black soot to come from the tailpipe when you first start the car or when the RPM hand reaches three thousand?

You have worn valve seals and posibly bad valve guides.


Why does catalytic converter clog?

Catalytic converters clog due to the carbon that the car produces. Usually, when the carbon has built up inside the cat., black smoke will come out of the tailpipe when you rev the engine. In extreme cases, black soot is visible on the ground next to the vehicle's tailpipe. Crystal Woll


What would cause oil to blow out the tailpipe?

Excess fuel causes black smoke.


Black soot coming out of tailpipe.?

Running rich, depending on year of vehicle it's possibly a o2 sensor, fuel system problem, carb if so equipped. Time for you to do some diagnostics


What is the color of soot?

Soot is typically black in color.


What element in organic compound causes the formation of black residue?

Incomplete combustion of carbon-containing compounds, such as hydrocarbons, can lead to the formation of black residue due to the production of elemental carbon (soot). This soot is responsible for the black color seen in the residue.


What causes white smoke and oil dripping out thr tailpipe?

oil getting by the rings causes white smoke and oil dripping out of the tailpipe.


What causes a Chevy 350 engine to blow heavy black oil out of the tailpipe?

bad rings or really bad valve seals.


What is a sentence with the word emitted?

The city bus emitted a steady stream of black soot from its tailpipe.


Why is black soot in your tail pipe?

Black soot in the tailpipe typically indicates incomplete combustion of fuel in the engine, leading to the formation of carbon deposits that are expelled through the exhaust system. This could be caused by issues such as a clogged air filter, malfunctioning fuel injectors, or a problem with the ignition system. It is best to have a mechanic inspect and diagnose the issue to prevent further damage to the engine.