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: 187,827 (85,000–280,000)
Exhaust & Emissions affected: 5.9L 6 Cylinder Diesel Turbo
23 people reported this problem
11 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
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!!
Intermittenly....the engine will crank fine...but not start.
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 250085,000Visitor
Replaced lift pump, now truck starts fine when nice and cool. When engine gets warm I have hard time to start.
My will not fire at all
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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