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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we had one on ours, same as you, heard it driving with the window open- I felt around the exhaust pipe (cold) and finally found the leak under the heat shield sleeve.
