Nissan Patrol: VK56VD VVEL Timing Chain Stretch & Rattle

The VK56VD 5.6L V8 uses a multi-chain VVEL valvetrain. At high mileage (typically 120,000 km or more) the primary and secondary timing chains elongate, causing variable valve timing drift and a characteristic cold-start rattle from the front of the engine. Stretched chains trigger P0011, P0014, P0021, and P0024 fault codes and, if neglected, can jump a tooth causing catastrophic internal engine damage. Infrequent oil changes and use of non-spec oil significantly accelerate chain and guide wear.

• Cold-start rattling or chattering from front of engine, clearing after 10-30 seconds as oil pressure builds
• Check engine light with P0011, P0014, P0021, or P0024 variable valve timing fault codes
• Loss of power and reduced fuel economy at higher mileages
• Rough idle or hesitation during warm-up phase

1. 1

   Listen for timing chain rattle on a cold start before engine oil pressure builds.

2. 2

   Scan the ECU for VVT-related fault codes.

3. 3

   Check service history for timing chain or guide replacement and verify oil change intervals were within Nissan specification.

4. 4

   Inspect for any oil leaks at the timing cover.

Parts involved: Timing chain.

$4,000 to $8,500 at New Zealand independent workshop rates. That is for this job on its own, not for the car.

An estimate, in NZD, for the repair as normally carried out. What a specific car costs depends on which part has failed and what it damaged on the way — treat this as the floor for a negotiation, not a quote.

• “Has the timing chain or VVEL chain guide set ever been replaced or inspected?”
• “Are there any stored or previously cleared P0011, P0014, P0021, or P0024 fault codes?”
• “What are the oil change intervals and has the correct Nissan 5W-30 fully synthetic oil been used throughout?”
• “What is the current odometer reading?”

The failure described above is documented in published sources — owner forums, technical service bulletins, recall notices and workshop write-ups — held in our fault database. The inspection instructions and the cost estimate are KickTyres’ own interpretation of them, and it is a starting point for an inspection rather than a manufacturer statement.