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A diesel engine miss results from one or more cylinders not burning fuel properly. This is caused by injection system problems which include Faulty injectors Clogged fuel filters Incorrect injection timing Low engine compression Injection system leaks Air leaks Faulty injection pump Excessive black smoke is caused by a rich air-fuel mixture. This may result form problems with the injection pump or infection timing, which may in turn be due to a choked air cleaner, worn fuel injectors, adulterated diesel fuel or the engine itself.

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Q: Why is a 1992 Ford truck missing and black smoke coming out of the tailpipe?
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