The engine usually outlives the truck — we keep everything around it honest.
Ram Cummins Repair
Cummins engines are famously durable, which is exactly why the failures show up in the supporting systems: lift pumps, CP3 and CP4 fuel pumps, VGT turbos loaded with soot, EGR coolers, grid heaters and 68RFE transmission behavior.
We diagnose fuel supply before condemning an expensive pump, and we test the turbo actuator before selling a turbo.
What's included
Scope of work
- 5.9L and 6.7L injector and rail-pressure diagnostics
- CP3 / CP4 fuel pump testing and replacement
- Lift pump and fuel filter housing service
- VGT turbo actuator calibration and turbo replacement
- EGR cooler, EGR valve and DPF service
- Grid heater and hard-start cold-weather repair
- 68RFE and Aisin transmission diagnosis
- Head gasket, valve adjustment and rebuild work
Symptoms we fix
Sound familiar?
- Low power with rail-pressure codes
- Rough cold start with white smoke
- Turbo stuck open or closed, no boost
- Frequent regens or a plugged DPF
- Fuel dilution in the engine oil
- Slipping or flaring 68RFE shifts
How we work it
The four steps, every time
- 01
Supply first
We measure lift-pump pressure and filter restriction before touching the high-pressure side.
- 02
Pressure testing
Rail pressure, return volume and injector contribution identify the actual failed unit.
- 03
Repair
Clean-room fuel practices, correct torque, and full system flush when metal contamination is present.
- 04
Verify
Regen cycle, road test and post-repair data log confirm the fix under load.
Questions
Straight answers
My CP4 failed — do I need the whole fuel system?
If metal traveled downstream, yes. We inspect filters and rails to document contamination instead of upselling by default.
Is a lift pump upgrade worth it?
On high-mileage trucks and tow rigs, a healthy supply pump is the cheapest insurance for the injection pump.
Can you fix constant regens?
Usually. Frequent regens are typically a sensor, EGR or driving-pattern issue, not a failed DPF.
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