2004. On a load going up a hill the engine seems to cough. When the load drops off and I accellerate again I have no power at all. After a few seconds and I hit the peddle a few times power returns and I get a huge cloud of black smoke.
boost seems fine, no fluctuation. usually happens when going up a hill 18+ boost then I'll hit a flat spot and let off on the peddle. boost goes down to 0 then hit the peddle again and no response, then after a few seconds power back and lots of smoke. It has also happened when I was going very slowly again up a hill at a turn, stopped and then no power, I put it in neutral rev it up, blow the smoke then continue on, but it does "feel" like something is sticking.
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