Fuel Knock

vendredi 30 mai 2014

Hey guys so I have a buddy that has 04 Cummins that started having an injector issue. I pulled his injectors and sent them to II to be rebuild as 100hp over. Last night I got them installed and everything buttoned up. Onece we got the air out of the lines and got it to fire up we noticed a knock and a slight miss! I have UN wired each injector one at a time to try to diagnose a stuck injector and found one that doesn't change any thing very much but the knock is still there. The knock clears up at about 2k rpm so I don't think it's in the bottom end. It hold oil pressure fine and We have no fuel leaks on the out side that we can see. Has any one delt with the or heard of any of this ? Thanks yall in advance



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