If the engine is difficult to start or cranks but does not start, it can be caused by a leak in the return side of the fuel system. This type of leak can allow air to enter the injection pump resulting in starting issues. A rubber hose on the back of the injection pump, connecting the pump to the steel hard line, that can be the source of this type of leak.
Engine Will Crank But Not Start Due to Fuel Return Line Leak on Dodge Ram 2500
Average mileage: 181,063 (85,000–280,000)
Exhaust & Emissions affected: 5.9L 6 Cylinder Diesel Turbo
35 people reported this problem
19 people shared problem details
1997 Dodge Ram 2500120,000Visitor
Engine turns over but won't fire. Have had no previous problems starting this truck has always started right away.
2000 Dodge Ram 2500Visitor
drove it turned it off would not restart just cranks
Intermittenly....the engine will crank fine...but not start.
After replacement of the lift (transfer) pump AND the VP44 main pump, after about 60 miles I noticed and smelled diesel dripping onto the ground right under the driver's seat. The mechanic said that the rubber fuel return line had failed where it goes thru/across a bracket. Both myself and the mechanic had noticed a serious lack of power/snap" while driving...I pick up the truck this afternoon.. will see if the power is back to where is used to be!!
1995 Dodge Ram 2500100,000Visitor
1995 5.9 / truck starts and runs fine when engine is cold. Once warm the engine stall abruptly and will not start until completely cool once again. The condition is worsening - as now it only takes 2-3 minutes at idle before shut down. Changed coil, cap & rotor, fuel pump, heat sensors, and checked all fuses. I'm out of all ideas...any suggestions?
2007 Dodge Ram 2500280,000Visitor
After starting and running my '07 Dodge 5.9l diesel it will not start again till engine is completely cooled down. Dodge by as not fixed and every time I take it in they remove supposed faulty sensors and still the same problem. Will crank but won't turn over, average wait time now 4 hours. I need help. Is this a cp3 module corruption, had a fuel lkeak right before this started. Put in high pressure fuel line and a new hard #4 fuel line just a few months back. I drive for a living and it is getting worse.
2001 Dodge Ram 2500245,000Visitor
Replaced fuel lift pump. Now no power at the lift pump. Any ideas
2006 Dodge Ram 250090,000Visitor
I drove my truck around town for a bit. Pulled into my driveway at home and shut the engine off. Came out 15 minutes later and it would crank but not start. Changed the fuel filter, insured that I had fuel coming from the filter to the injector pump, but did not have fuel coming out of the injector pump. Had it towed to a dealer where it sat for over a week to be worked on. In less than an hour after the mechanic started working on it he said it was done. I asked him what was wrong. He said he checked the fuel injectors first. Then he performed a "float test" on it. After completing the float test it started. When I went into pick up the truck, the mechanic was gone to lunch. But I feel the problem was not resolved. Occasionally I have a puddle of diesel fuel under the engine compartment of my truck. Tried chasing the fuel lines to see if one was leaking, but have not located it yet. I'm afraid to pull my 5th wheel trailer with it for fear of a breakdown. 2006 Dodge Ram Laramie 2500, 5.9i liter Cummins
My will not fire at all
2001 Dodge Ram 2500210,000Visitor
After im out of fuel. The truck sometimes is hard to start
2004 Dodge Ram 2500Visitor
I drove it last night stared good and ran good got home then went out to start it this morg and would not start but i can hear the pump working and it turns over just wont start.
2001 Dodge Ram 2500Visitor
The leak is where the steel line and plastic line connect.Are there o rings that can be replaced?
1997 Dodge Ram 2500136,000Visitor
Was driving truck pulled out into traffic it sputtered stalled after that I could not start it it set there and cranked over real good no problem on cranking I'm wondering what the problem could be I would suspect something electrical so not getting spark the truck had overheated a lot of steam but it started up fine after that and I am fine and I added coolant and I took off on the road that's what it's all out on me so it cranks over well but won't start I'm disabled and have very little money this could be the end of my driving if I can't fix myself please help
2007 Dodge Ram 2500Visitor
Truck cranks won't start sprayed with either and it fires fuel pump pulses it's a 6.2 diesel king cab
2001 Dodge Ram 250085,000Visitor
Replaced lift pump, now truck starts fine when nice and cool. When engine gets warm I have hard time to start.
2003 Dodge Ram 2500280,000Visitor
Won't start after 4 hrs after turn of the engine I have to plug the engine all night to start the engine after 2 min of cranking
2006 Dodge Ram 2500280,000Visitor
Spins over longer before starting runs good
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