Alie&Jim's Carrilite Posted September 8, 2016 Report Share Posted September 8, 2016 Have a fuel leak that I cannot locate. This is on a 1998 Cummins M11 Celect Plus. Drivers side of the head is getting wet from fuel. But I cannot find the leak. I can smell the fuel though. I can wipe it off and it will take 6-8 operational hours for it to be wet again. It's not coming from the injector pump, it's dry, It's not from the fuel filter lines, they are dry as well. Suggestions on where to look? Jim's Adventures Old Spacecraft.... Who knows whats next Link to comment Share on other sites More sharing options...
spindrift Posted September 8, 2016 Report Share Posted September 8, 2016 Always a good idea to thoroughly clean an engine before attempting to identify the origin of a leak. On an M11, there just aren't that many places for an exterior fuel leak to occur which you haven't already identified. 2012 F350 KR CC DRW w/ some stuff 2019 Arctic Fox 32-5MCindy and Tom, Kasey and Maggie (our Newfie and Berner) Oh...I forgot the five kids. Link to comment Share on other sites More sharing options...
Ronbo Posted September 8, 2016 Report Share Posted September 8, 2016 Is it high on the engine or low. Clean it off and take pictures. Follow your fuel lines. As you have checked injectors, check fuel return line. I think it comes off the back of the head to the tanks but don't hold me to that. Ron C. 2013 Dynamax Trilogy 3850 D3 2000 Kenworth T2000 Optimus Prime Link to comment Share on other sites More sharing options...
jeffw Posted September 8, 2016 Report Share Posted September 8, 2016 ECUs are often cooled by fuel. Could it be that? 2007 Volvo 780 Volvo D12D, 465hp, 1650 ft/lbs tq., ultrashift Link to comment Share on other sites More sharing options...
Alie&Jim's Carrilite Posted September 8, 2016 Author Report Share Posted September 8, 2016 Currently raining again, fuel is appearing on the head at about the same location the rear of the injection pump is, but high. From the top- valve cover seal, head seated on block- fuel is gathering at this seam, but there is no leak at the head. Head gasket is good, no issues there. When the area is cleaned it takes 6-8 hours of run time for it to reappear enough to become noticable again. Thinking that if it was high pressure, there would be other indicators- low fuel mileage, stumble, etc but there isn't. Jim's Adventures Old Spacecraft.... Who knows whats next Link to comment Share on other sites More sharing options...
Recommended Posts
Archived
This topic is now archived and is closed to further replies.