I am experiencing loss of power in the hills and take off it feels like a fuel problem. I have changed fuel filters several times and checked all the fuel lines. I blew air thru them and all was fine. The only thing I noticed is the return line is dry - does it need to have a constant flow of fuel thru the return line ? If so I am assuming the blockage would be inside the water separator cause I checked the lines on both sides and it seems to be good.
Loss of power 2013 paccar mx13
Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Btmnkarr, Dec 8, 2021.