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Usually that means that there is too much fuel going into the intake. It can be a stuck injector, bad O2 sensor, faulty EGR valve, worn Throttle position sensor, stuck choke, plugged air filter... there are probably plenty of other possibilities. Use a code scanner to find out what the COMPUTER thinks is wrong.

On a 1994 Ford Escort, if the timing belt jumps or strips, the valve timing will allow gasoline to go through the motor unburned. Checking the timing belt alignment and a compression test should verify this problem. Check that the belt is aligned and not damaged, check for even compressioin to verify a valve is not stuck open.

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โˆ™ 2014-08-25 16:56:58
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Q: What is the cause of black smoke coming out of tailpipe?
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white smoke=water. probably the intake or intake manifold.

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