Toyota Porte: 1NZ-FE / 1NR-FE Timing Chain Tensioner Cold Rattle

The NCP141 Porte with 1NZ-FE and NSP141 Porte with 1NR-FE both use a hydraulic timing chain tensioner with the same cold-start oil drainage issue documented on the NCP80 Sienta. The tensioner check valve does not perfectly retain oil in the plunger circuit during extended cold soak, and a 2–6 second rattle occurs on first start of the day. The 1NR-FE variant is slightly less prone than the 1NZ-FE due to revised tensioner casting from 2014, but both suffer if oil change intervals are extended. High-mileage imports are the most affected population.

• Metallic rattle from engine front on cold start lasting 2–6 seconds
• Rattle absent once engine oil pressure builds
• Possible P0016 or P0017 DTC if timing has drifted
• Increased fuel consumption if timing has slipped

1. 1

   Arrive at inspection before seller has started the engine — the rattle only appears on a genuine cold start.

2. 2

   Listen with the bonnet up immediately after starting.

3. 3

   Duration over 5 seconds indicates tensioner is failing or chain is stretched.

4. 4

   Pull the engine oil dipstick and check for low level or dark, sludgy oil indicating overdue changes.

5. 5

   Request full service history showing oil changes every 5,000–7,500 km maximum.

Parts involved: Timing chain.

≈A$550 to ≈A$1,560 at independent workshop rates, shown as an approximate guide in Australian dollars. That is for this job on its own, not for the car.

An estimate, converted to Australian dollars, 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 tensioner been replaced?”
• “Can I start the car from cold myself at the inspection?”
• “How often has the oil been changed and what spec oil?”
• “Are there any engine warning lights active?”

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.