on my 01 i have a fuel leak off of the back of the motor it only leaks when running i replaced the o-ring washers on the banjo bolt on the back of the head and the tee fitting dont seem to be leaking what else could be leaking it is dripping from the bottom of the bellhousing 01 dodge quad cab 5spd 285000 miles cold air intake afe, cooler tubz, duel electric fans, airdog 150, edge juice att. hot unlock, industrial injection dragon fire pump, .093 connector tubes, .093 lines, ats head studs, 300 hp injectors 7x16 , s400 turbo and s300 twins, custom billet intake plate, cooling mist water meth injection, valair twin disc clutch 3850lb, 1 3/8 input shaft, south bend upgrade hydulics, duel 6 inch aussy stacks, 4 inch lift, eagle alloys, 35x12.50x16.5 bfg's, ranch hand front and rear bumpers, valair on board air with Siberian express train horns,Pulling stats.Hanks 4x4 3rd 282.56ft01 dodge reg cab 5spd 282000 miles cold air intake afe, cooler tubz, single electric fan or I can put the stock clutch fan on, air dog 150 new 1 month old, stainless steal nerf bars, edge juice att. hot unlock, .093 connector tubes, valair single disc clutch, south bend hydrulics, 4inch from turbo to duel 5 inch miter stacks, leveling kit, American racing wheels, 33x12.50x16.5 bfg's, ranch hand front and rear bumpers for sale 84 Chevy k30 reg cab with 94 12v p pump Cummins and nv4500 trans 205 transfer case 3 inch body lift, 6 inch suspension lift, 36x14.5x16.5 parnelli jones dirt grips, 16.5x12 weld scorpio wheels, dana 60 front, duramax rear axle, duramax intercooler, schied custom injection pump, RQV gov., 370 injectors that are extrude honed bigger, o- ringed and head stud, milled off intake, sbc valve springs titanium keepers and retainers, portand polish head, marine lift pump, custom ground cam, cooling mist water meth. injection, valair twin disc clutch 3850lb, 1 3/8 input shaft, valair hydulic upgrade, industrial injection silver bullet 66 turbo, no fuel plate, .093 polish stainless steel fuel lines, aluminum radiator, single 5 inch miter cut stack Pulling statsHanks 4x4 7th 256ft 03 Honda Rincon 650 1500 miles with 2 inch lift, 27 mudzillas, 1 1/2” rear wheel spacers, 1 inch front wheels spacers, hmf pipe, dynatek cdi, dynatek coil, k&n air filter, rejeted 170 main, spring clipped 8 coils, 5000 lb winch, heated grips, 14% gear reduction, 2 inch snorkel 95 Yamaha warrior 350 bored out to 366, stage 2 hot cam, JE 85mm piston 12.5:1 compression, new rod, k&n air filter, white bros. pipe, bigger coil, performance cdi box, nerf bars, oil cooler mod, full skid plates, heavy duty racing clutch, jetted 07 Kawasaki klx250 on off road bike moose air filter, fmf pipe mostly stock Member statsdiesel bombersthe diesel garagemopar1973man.comCummins forumcompetition dieselnyrok’satv connection

Could be any one of the fittings you can see here, since they would all obviously leak on the bell housing. Seems like you checked over all that though. You might double check it, maybe even the #6 injection line is a little loose, though it should miss while running.

Also check the return line behind the head. Mine did the same thing, but I could see a steady stream of fuel when it was running.

Mine drips a little fuel from the clutch housing too, I THINK it is one or two injectors just barely leaking, running down the top of the head and then dripping off the back of the motor.It gets lost in the tappet cover oil leak, something in the front cover leak, and whatever other crap drips under there :banghead: