Diesel Repair San Antonio, TX | Truck Diagnostics & Service

Mechanic performing heavy-duty diesel engine repair on truck with cab tilted up in San Antonio TX
Accessing the engine for complex diesel diagnostics and heavy-duty repair. We specialize in minimizing downtime for San Antonio truck owners.

Advanced computerized diagnostics for Cummins, Power Stroke, and Duramax platforms.

Expert Diesel Engine Repair & Advanced Diagnostics in San Antonio, TX

Automotive Brake & Clutch is San Antonio’s leading diesel engine specialist. We provide expert diagnostics and mechanical repair for Ford Power Stroke, Cummins, and GM Duramax platforms. As a certified NAPA Truck Service Center, we specialize in high-pressure common rail (HPCR) fuel systems and turbocharger overhauls.

Our technicians use advanced engine diagnostic software to resolve complex “Limp Mode” events and “Check Engine” faults. Whether you operate a personal 4×4 or a heavy-duty commercial fleet, we provide accurate diesel repair estimates that maximize engine longevity and torque performance.

Platform-Specific Diesel Expertise

Diagnostic Quick-Check: High-Pressure Fuel Issues

Experiencing a diesel no-start condition, excessive smoke, or a loss of power? These symptoms often point to fuel injector failure or wear within the high-pressure pump. We provide professional diagnostic scans using advanced pressure testing and computer analysis to pinpoint the exact failure point in your diesel fuel delivery system.

High-pressure common rail (HPCR) diesel fuel injection system diagram for Power Stroke, Cummins, and Duramax diagnostics

Common Rail Fuel Path: Precision Diagnostics for Modern Diesel Engines

Fuel System & Injectors

  • Common Rail (HPCR) Diagnostics and repair.
  • Fuel pump replacement (CP3/CP4 platforms).
  • Water separator and filter service to protect injectors.

Turbo & Induction

  • Turbocharger repair and variable geometry (VGT) service.
  • Intercooler and intake manifold cleaning.
  • Boost leak pressure testing and repair.

Emissions & Cooling

  • EGR cooler and valve diagnostics.
  • DPF cleaning and forced regeneration service.
  • Oil cooler and heavy-duty cooling system repair.

San Antonio Diesel Repair FAQ

Why is my diesel truck blowing white smoke?
White smoke is often a sign of unburnt diesel from a faulty injector or an EGR cooler leak allowing coolant into the combustion chamber. We recommend an immediate diesel diagnostic estimate to prevent internal engine damage.
📊

Verified History: We Report to CARFAX®

We report all diesel repairs to CARFAX, providing a verified service history that maximizes your engine’s resale value and meets commercial compliance standards.

Schedule Your Diesel Service Today

From fuel system overhauls to turbocharger repairs, stay on the road with San Antonio’s trusted diesel specialists. Get your professional repair estimate now.