filters changed two days ago, now engine had bad miss
two days ago a coworker changed filters on an 05 6.0, came back for a rough idle and no power, after a little checking over, I found the filter in the frame was half full of WATER!! the water undoubtedly took out two injectors, both have been replaced, the fuel has had the approved amount of 9 1 1 added. the engine miss is better but still is terribly sluggish. while test driving I've noticed that the exhaust back pressure far above desired (desired may be 3 to 5 psi, and its 30 to 40!) any thoughts? and yes the filters have been changed a second time.