Ford 6.7L DCR Conversion Process

 

Why Replace the Driver-Side Fuel Rail

​The driver-side fuel rail is a major component in how the DCR system regulates pressure. If
it’s restricted, contaminated, or simply worn out, your DCR conversion won’t deliver its full
benefit.

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• For trucks with 80,000+ miles, we strongly recommend replacing the rail during your DCR
  install.

• Doing it while we’re already in the area saves labor time and prevents future fuel-pressure
  issues.

• A clean, new rail ensures consistent power delivery, smoother idle, and better overall
  reliability.

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CCV Filter Upgrade

The crankcase ventilation system is a well-known trouble spot on 6.7L Power Strokes.
Excessive oil vapor buildup contributes to upper oil pan leaks, intake contamination, and
turbo wear. Our upgraded CCV filter setup prevents these issues by keeping oil out of your
intake and helping extend turbo and engine life.

 

​What’s Included in Our DCR Conversion?

• DCR conversion kits in stock for same-week scheduling

• Replacement of driver-side fuel rail (recommended 80k+ miles)

• CCV system service or upgrade included in the same visit

• Backed by local, experienced diesel technicians

• Factory-clean install and warranty-backed workmanship

 

​How the 6.7L Fuel System Works — and Why It Matters

Your 6.7L Ford’s high-pressure fuel system is capable of generating up to 32,000 PSI. That
performance comes at a cost — when even small components fail, the results can be
catastrophic.

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• The driver-side fuel rail is a common failure point that can cause low-fuel-pressure
  (P0087) codes, poor performance, or even lead to CP4 pump failure.

• The rail’s three primary jobs are:

  • Supplying fuel to the driver-side injectors

  • Feeding the passenger-side rail and injectors

  • Regulating the entire system’s pressure via the PCV (pressure control valve) at the rear
    of the rail

• ​When we remove these valves, we often find debris or microscopic metal strands that
  restrict fuel flow — far smaller than what’s typically found inside the CP4 pump’s VCV.

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Because we have Ford factory diagnostic software in-house, we can run a High-Pressure
Fuel System Test before installing your new DCR kit. This test helps confirm the health of
your existing system and can tell us whether replacing the fuel rail is the right move for
your specific truck. If you’re on the fence about upgrading the rail during your DCR
conversion, ask us to run this test — it’s the best way to make an informed decision.

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​Why Choose Texas Diesel Company?

Our North Texas diesel shop has earned its reputation for precision, transparency, and fast
turnaround. We stock all major DCR conversion kits and related components for same-week
service, eliminating downtime and ensuring your 6.7L Power Stroke leaves our shop ready
for years of reliable performance.

Stop CP4 failures before they happen — schedule your DCR conversion today.

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