Diesel Engine Repair

Diesel Diagnostics, Engine Repair & Overhaul for Commercial Trucks


For high-mileage trucks or vehicles experiencing power loss, oil consumption, or internal wear, Western Truck Exchange offers complete diesel engine overhaul and major engine repair services. We service leading diesel platforms including Cummins and Caterpillar engines, supporting both fleet and vocational applications.



Our engine overhaul process begins with in-depth diagnostics to evaluate internal components, fuel systems, cooling systems, and lubrication circuits. From cylinder heads and injectors to bearings and gaskets, every component is inspected and rebuilt or replaced according to factory specifications.


Diesel Engine Services We Offer


  • Diesel engine diagnostics
  • Power loss diagnosis
  • Oil consumption diagnosis
  • Fuel system inspection
  • Injector service
  • Cooling system checks
  • Lubrication system checks
  • Cylinder head inspection
  • Gasket and seal repairs
  • Major engine repair
  • Engine overhaul evaluation


Common Signs Your Truck Needs Diesel Engine Repair

  • Loss of power
  • Excessive smoke
  • Hard starting
  • Rough idle
  • Oil consumption
  • Coolant loss
  • Engine overheating
  • Unusual engine noise
  • Check engine light
  • Poor fuel economy


Western Truck Exchange supports commercial trucks, fleets, contractors, and owner-operators throughout Los Angeles and Southern California. Our service team can inspect your truck, identify the source of the engine issue, and recommend whether repair, overhaul, or replacement is the best path forward.



Request an Engine Evaluation

Complete the form below and our service team will contact you to discuss your truck, symptoms, and appointment availability.

Vehicle Being Serviced

Describe Service Needed