Exhaust Leak on a 400 Cummins
Can anyone tell me how to check for an exhaust leak on a diesel?? Have been hearing what sounds like an exhaust leak when driving with the window down on the highway. More noticeable when you have the...
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Black soot is the tell. Surprised your engine check light hasn't come on...maybe it's only a matter of time. You don't say what engine you have but Cummins can hook it up to their computers and tell you in a minute where it is. Meanwhile, check the vacuum line running to your exhaust brake for leaks....Dennis
