Vehicles using OM603.913 engine list:

Engine OM603.913

Symptoms:
- Rough idling and loss of power
- Excessive smoke from the exhaust (black or white)
- Hard starting or failure to start
- Engine overheating
- Oil leaks around the valve cover and turbocharger area

Diagnosis:
- Check for clogged fuel injectors or faulty injection pump causing poor fuel delivery
- Inspect turbocharger for wear or damage leading to reduced boost pressure
- Examine valve stem seals and head gasket for leaks causing oil consumption or coolant mixing
- Test glow plugs and wiring for proper operation, especially in cold starts
- Look for cracked or brittle vacuum lines affecting turbo control and idle stability

Fixes:
- Clean or replace fuel injectors and service the injection pump to restore fuel flow
- Repair or replace the turbocharger if boost pressure is insufficient or if there is excessive shaft play
- Replace valve stem seals and head gasket to stop oil leaks and prevent coolant contamination
- Replace faulty glow plugs and repair wiring harness to improve cold start performance
- Replace damaged vacuum lines and ensure all connections are tight to stabilize idle and turbo function
- Regular oil and filter changes with correct grade oil to maintain engine lubrication and longevity

Prevention:
- Use high-quality diesel fuel and regularly clean or replace fuel filters to avoid injector clogging
- Perform routine turbocharger inspections and maintain proper oil levels to prevent premature failure
- Change engine oil and filters at recommended intervals to protect valve seals and turbo bearings
- Monitor coolant levels and condition to prevent overheating and gasket damage
- Address any engine warning signs early to avoid costly repairs and maintain reliable operation