Of course I tried turning off the engine brake. It’s almost always off unless I’m going down hill.
I still haven’t resolved the issue. I’ve tried a number of things from gas additives, replacing the engine brake switch checking all the connections and fuses and hunting for the fuel filter which is still MIA. I have an appointment with Cummins on Monday in Phoenix. Hopefully they can figure it out. I think it’s a stuck solenoid in the jake brake.
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