Infiniti QX80 Y62

5.6L V8 — 400 hp, genuine luxury SUV character, distinctive exhaust note. Timing chain stretch on 2011–2013 builds is a known issue with a service campaign. HPFP cam lobe wear can push fuel into the oil system — check oil regularly for fuel odor. With quality fuel and proper maintenance, long-term durability is achievable.

• !! Timing chain stretch (2011–2013) — service campaign from 100,000 km

  VK56VD timing chain stretches prematurely on early builds (pre-March 2013). Typically affects vehicles from 52,000–93,000 miles. HPFP riding on the timing chain increases load. Infiniti issued a service campaign, but not all owners were covered.

  Symptoms: Loud squealing or rattling from front of engine, poor throttle response, check engine light
  3,000–5,500 $
  Ad timing chain kit VK56VD QX80 QX56timing chain kit VK56VD 5.6 OEM
• !! HPFP cam lobe and lifter bucket wear from 80,000 km

  Camshaft lobe wears through the original HPFP lifter bucket. Fuel leaks into the engine oil, washing off the lubrication film. Neglected, this leads to catastrophic engine damage.

  Symptoms: Fuel smell in engine oil, power loss, starting difficulty, engine rattling
  2,000–8,000 $
  Ad HPFP lifter bucket kit VK56VD Nissan OEMhigh pressure fuel pump lifter QX80
• !! Fuel pump impeller recall — engine stall (2020–2021) from 50,000 km

  Fuel pump impeller can swell and bind inside the pump module, causing fuel starvation and engine stall. NHTSA recall 21V-373 affects 2020–2021 QX80. Dealers replace fuel pump module free of charge.

  Symptoms: Sudden engine stall while driving, starting difficulty, fuel pressure warning
  0–1,200 $
  Ad fuel pump module QX80 2020 2021 recall 21V373fuel pump impeller QX80 replacement

+ 2 more engine weaknesses + vehicle weaknesses