DistributiekettingMercedes-Benz

Mercedes OM651 Timing Chain

OM651 timing-chain condition is a key used-diesel check because noise, oil history, and access can turn a normal C-Class or E-Class into an expensive repair.

Repair difficulty
Hoog
Estimated cost
High because access and labor are substantial.

Affected models and engines

  • Mercedes C-Class, E-Class, A-Class, GLC, and other OM651 diesel applications

Symptoms

  • Rammel bij koude start
  • Rough start
  • Timing faults
  • Diesel knock

Why it fails

  • Long oil intervals and high mileage increase chain and tensioner wear.
  • Rear placement makes repair labor heavy.
  • Noise is often minimized by sellers.

Checks before buying

  • Listen from cold start.
  • Check oil-service dates and mileage intervals.
  • Ask for timing repair evidence on high-mileage cars.
  • Scan for cam/crank correlation faults.

Fault codes to investigate

P0016P0340P0335

Fault codes guide diagnosis; they do not confirm a part without live data, inspection, service history, and repeat testing.

Related research

Continue your research

Move from brand context to exact model, powertrain, fault-code, and buying-checklist evidence.

Used-car checklist

Mercedes-Benz hub

Brand
Open ->

Mercedes C-Klasse

Model
Open ->

Mercedes OM651

Powertrain
Open ->

P0016 fault code

Fault code
Open ->

P0340 fault code

Fault code
Open ->

P0335 fault code

Fault code
Open ->

Controlelijst voor gebruikte auto's

Guide
Open ->

Used German car red flags

Guide
Open ->

Hulp bij aankoop

Vraag een risicoanalyse voor een occasion aan

Stuur ons model, bouwjaar, motor en kilometerstand. We helpen de belangrijkste risico's vóór aankoop te herkennen.

Bekende zwakke punten van motor en versnellingsbak.
Foutcodes en symptomen om te controleren.
Inspectievragen vóór de onderhandeling.

Dit is aankoopadvies, geen mechanische keuring op afstand of garantie. Controleer de auto altijd ter plaatse met diagnose en onderhoudshistorie.