Parts for your 2006 Nissan Maxima-Fuel injectors

2006 Nissan Maxima fuel injectors — what they do and how to look after them

Technical sources including the 2006 Nissan Maxima Factory Service Manual (EC section) and Nissan’s OEM parts catalogue confirm the VQ35DE 3.5‑litre V6 runs a sequential multi‑port fuel injection system with six fuel injectors. So yes, fuel injectors are absolutely fitted and relevant on the 2006 Maxima.

On this Maxima, each injector precisely meters petrol into its cylinder in time with the engine’s cycle. The ECU adjusts injector pulse width to match load, temperature and throttle input, keeping the mixture balanced for smooth running, decent fuel economy and low emissions. Good injectors help the VQ35DE deliver that trademark smooth pull right across the rev range.

While injectors aren’t a routine “replace at X km” item, they do benefit from sensible maintenance. Poor fuel quality, short trips and heat soak can leave varnish or deposits that upset spray pattern and flow. Over time, seals can harden, and electrical coils can fail. Typical signs of trouble include rough idle, hesitant acceleration, increased fuel use, hard starting, a petrol smell, or a check‑engine light with misfire or mixture codes.

As part of regular servicing, it’s smart to:

• Use quality petrol and consider a reputable injector cleaner every 10,000–15,000 km if driving mostly around town.
• Inspect for fuel leaks around the rail and injector O‑rings, especially after any work under the bonnet.
• Scan for fault codes and look at fuel trims