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Vehicle cuts out under fast acceleration and blows puff of grey smoke

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White smoke is usually an indication of anti-freeze in the oil. Usually cause by leaky gasket. I recommend having a compression test done to make sure your head-gasket is not leaky and head is not cracked. If there is engine codes or check engine/service light is on, then it is a sensor or circuit that is faulty. Like 02 sensors or throttle position sensor.

I would first check head and gasket.

Posted on Nov 15, 2009

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Posted on Jan 02, 2017

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Why is my cub cadet xt1 blowing black smoke cleaned air filter made sure oil level is correct.still blows black smoke


Make sure that at full throttle the chock is not being used. Black smoke coming out of the exhaust of gasoline engine is a sign of a rich fuel mixture (too much fuel, not enough air). A brief puff of black smoke may be visible during hard acceleration when the fuel mixture goes momentarily rich, but under normal running conditions and idling the exhaust should be transparent. If black smoke is visible all the time and the inside of the muffler is coated with heavy black carbon deposits, it would tell you the engine has a rich fuel condition.
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Hi my 2006 3.2 blows puffs of un-burnt diesel smoke intermittently after it has been driven in traffic


have the variable vanes in the turbo checked for correct operation
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Would a faulty egr valve on my 02 PT Cruiser 2.2crd cause excessive black smoke and injector knock under full throttle....thanks


black smoke is over fueling and although the turbo appears to spin ok the vale variation actuator may not be operating correctly
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There are four possible answers to this problem, if the heater starts normally, runs for a few seconds or minutes and the shuts down but was still running normally at the time of shut down, this could be caused by the photocell, also known as the flame out control. This safety device may be failing, shutting down even though the heater is working normally, check the operation of the photocell. The second cause may be partial fuel filter blockage, the heater is effectively starving itself of fuel, so the flame blows out, hence the puff of smoke, and then shuts down on the safety cut out. Third cause, if this model has a compressor at the rear of the motor, the problem could be low pump pressure, caused by wear or contamination of the carbon blades, this would cause the wrong amount of fuel to be syphoned up, with weak fuel mix the heater may blow itself out and shut down. The fourth cause, perhaps indicated by the puff of white smoke, is contamination of the fuel with water, water will cause the white smoke and also is indecated by white residues or a power like substance on the end plate of the heater which glows red hot when burning.

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White smoke is usually a sign for a bad head gasket. How much white smoke is coming out? Also, are you losing coolant and can't find a drip under the engine?

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The valve guide seals are the problem. They were probably bad from the factory. The bike has 16 valves times $4 per seal = $64 in seals. The cylinder head gasket is $55 and a head cover gasket set is about $51. tombones49_277.gif

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