Ram / Dodge 5.9L Cummins
5.9L Cummins fuel system repair
Lift pump, CP3 and fuel supply diagnosis for the 5.9L Cummins.
Why this matters on the 5.9L Cummins
Low supply pressure from a weak lift pump is a common 5.9L complaint and can damage the high-pressure pump and injectors.
Symptoms owners notice
- Hard start
- Low power under load
- Stalling
What we check
- Supply pressure under load
- Rail pressure
- Filter inspection
Repair work involved
- Lift pump, CP3 and line repairs
Trucks with the 5.9L Cummins
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