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Nissan 350Z: Timing chain guide and tensioner wear (3.5 VQ35DE)

Timing chain guide and tensioner wear (3.5 VQ35DE) is a very common engine fault on the Nissan 350Z on the 2002–2006 cars, and we rate it major. Putting it right costs ≈A$320 to ≈A$640 at independent workshop rates, shown as an approximate guide in Australian dollars. Below is what goes wrong, the symptoms to notice on a test drive, where to look, and what to ask the seller before you hand over any money. It is one of 12 documented faults on the Nissan 350Z.

Vehicle
Nissan 350Z
Engine
VQ35-DE
Years
2002–2006
Fuel
petrol
System
Engine

This page covers the Nissan 350Z as a model. Some faults only affect particular engines or build years — enter a plate below to narrow the list to one car.

All Nissan 350Z faults12 documented faults on this model

What you are looking at

The front of a dual overhead camshaft engine with the timing cover removed, exposing the timing chain and sprockets.Example of the part — not this vehicle

The front of a twin-cam engine with the timing cover off — chain, sprockets and guides.

Logansenf · CC BY-SA 4.0 · Wikimedia Commons

What goes wrong

The 3.5 VQ35DE V6 in the 2002 to 2006 350Z is known for timing chain guide and tensioner wear, first heard as a rattle or clunk from the front of the engine. The noise is usually loudest for a few seconds after a cold start. Left alone, worn guides let the chain run slack, which speeds up wear and can upset the cam timing. Listen for rattle on a cold start and ask whether the chains and guides have been done.

What you would notice

  • Loud metallic rattling noise from engine front on cold start
  • Rattle subsides within 5-15 seconds as oil pressure builds
  • Noise worsens after vehicle sits unused for several days
  • May be accompanied by check engine light if chain skips timing

How to check it

Where to look. Front of engine block, behind timing cover on both cam chain banks

Cold-start the engine from fully cold and listen immediately for rattle from the front timing cover. Duration and volume indicate severity. Check service history for tensioner replacement. Inspect oil condition — black, dirty oil worsens tensioner bleed-down.

Parts involved: Timing chain.

What it costs to put right

≈A$320 to ≈A$640 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.

Ask the seller

  • “Has the cam chain tensioner ever been replaced?”
  • “How often is the oil changed and what weight oil is used?”
  • “Does the car sit unused for long periods between drives?”

Now check the Nissan 350Z you are actually looking at

Everything above is true of the model, and it is free. What it does not tell you is whether THIS car still has money owing on it, has been written off or reported stolen, what kms it showed in past sale ads, whether it has had accident repair claims and what it is worth today. That comes from the official records for that plate. Enter the plate and its state for the A$17.90 Vehicle Check, or the full history from A$24.99.

Where this comes from

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.

Nissan 350Z buyer questions

Is timing chain guide and tensioner wear (3.5 vq35de) serious on a Nissan 350Z?

We rate it major and very common on the Nissan 350Z. The 3.5 VQ35DE V6 in the 2002 to 2006 350Z is known for timing chain guide and tensioner wear, first heard as a rattle or clunk from the front of the engine. The noise is usually loudest for a few seconds after a cold start. Left alone, worn guides let the chain run slack, which speeds up wear and can upset the cam timing. Listen for rattle on a cold start and ask whether the chains and guides have been done.

How much does it cost to fix on a Nissan 350Z?

≈A$320 to ≈A$640 at independent workshop rates, shown as an approximate guide in Australian dollars. That figure is for this job on its own. A car showing the symptoms on this page is usually worth either walking away from or negotiating down by at least the repair figure.

Which Nissan 350Z years are affected?

Our research records this fault on the 2002–2006 Nissan 350Z. Build dates move around, especially on imported cars, so treat the range as the years to look hardest at rather than a guarantee either way. The official records tell you the exact build and first registration date for the car in front of you.

How do I check for it before I buy?

Cold-start the engine from fully cold and listen immediately for rattle from the front timing cover. Duration and volume indicate severity. Check service history for tensioner replacement. Inspect oil condition — black, dirty oil worsens tensioner bleed-down. Look here: Front of engine block, behind timing cover on both cam chain banks