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Too much injector cleaner maybe?
04 f-350sd drw 4wd crew,Western hauler conversion.
I bought this truck a year ago to haul RV's out of the Elkhart IN. area, but that hasn't happened yet. This truck is treated like a baby and the 6.0 is stock. About every third time I fuel up I put some Lucas lubricator, injector cleaner in also. I ran out of the Lucas stuff and I had some Howes Diesel treat on the shelf , so I used it. It said to double the dose the first time to clean her out good as I did. The next day the motor started missing and smoking. I drove it 3 days like this thinking i broke a chunk of dirt loose and plugged an injector. Engine still missing and smoking I got crazy and poured 1/2 ounce Diesel Power injector cleaner into the upper fuel filter. This did stop the missing ,but i think it is smoking more and it smokes alot, no one wants to drive behind me lol. Is it possible to put too much stuff in the fuel and cause this ? mileage is 88900. Cleand EGR yesterday , It was damp in there , not sure if was liquidwrench i used , or coolant. smoke is mostly white,but don't smell like coolant the way a gas engine does . Any ideas ? Thanks.