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calfarmli

Smoking Diesel

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I have a Cummings Diesel with 123,000 miles on it.I'm getting consistant black smoke out the engine it's a standard transmission and when I shift gear I get alot of smoke.It passed inspection but the reading was 36.2 and it would fail at 40.0 emission whatever????.Now the ? is could it be the injector pump???? someone told me if it was the injector pump it would be hard to start???The truck has NO PROBLEM starting.Or would it be the injectors.Is there a way to determine which it would be.confused.gif

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Smoke is unburned fuel or a sign of incomplete combustion. On diesels a lot of people simply raise the amount of fuel delivered to the engine to increase power. Inefficient but it works.

 

On your truck, what is the condition of the air intake ducting, air filter, and intercooler? Smoke could be a sign of not enough good air to the combustion chamber.

 

Emissions test is probably some form of parts-per-million (PPM) particulate matter count.

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