Parts for your 2014 Nissan Navara-Ignition coils

2014 Nissan Navara ignition coils

Do 2014 Nissan Navaras use ignition coils? Yes—on the petrol variants. Technical references including the Nissan D40 Navara Factory Service Manual (EC sections for VQ40DE/QR25DE), the YD25DDTi Engine Control documentation, and Nissan Australia/NZ 2014 Navara specifications make it clear: diesel models (YD25DDTi) use compression ignition with glow plugs and have no ignition coils, while petrol models (such as the VQ40DE 4.0 V6, and where fitted the QR25DE 2.5) run coil-on-plug ignition. Industry catalogues from ignition specialists (e.g., NGK and Bosch applications for D40/VQ40DE) also list direct-fit coils for the petrol Navara.

For owners of petrol-powered 2014 Navaras, the ignition coils are the little powerhouses that step 12V battery voltage up to thousands of volts and fire the spark plugs right under the bonnet. On these Navaras it’s a coil-on-plug setup: one coil per cylinder, so six coils for the VQ40DE V6 (and four on the 2.5 petrol where offered). Their job is simple but critical—strong, well-timed spark for smooth starts, clean acceleration, decent fuel economy, and steady towing performance.

Coils aren’t a routine replacement item on the service schedule, but they do wear. Common signs include a rough idle, misfire under load, harder starting when cold, poor fuel economy, and a flashing or steady Check Engine light (often with codes like P0301–P0306 on the V6). If that crops up, a quick scan and a swap-test can pinpoint the suspect coil.

• During servicing, inspect coil boots for cracking, oil contamination from rocker cover leaks, and brittle connectors.
• Replace spark plugs on time (typically around 100,000 km for long-life plugs). Tired plugs make coils work harder and fail sooner.
• When replacing, choose quality OEM-equivalent coils, fit a light smear of dielectric grease inside the boot, and seat the coil squarely. Nip the retaining bolt to factory spec—no need to swing off it.
• If one coil fails at high kilometres, consider replacing the affected coil only, then reassess. Bulk replacement can be sensible if multiple coils test weak or the vehicle sees heavy towing or outback heat.

Quick note for diesel owners: if the badge under the bonnet says YD25DDTi, there are no ignition coils to service. Focus instead on glow plugs, fuel system health, and regular filter changes.

Popular questions

Do all 2014 Navaras have ignition coils?
Not all. Petrol models do (coil-on-plug), while the common YD25DDTi diesel does not use ignition coils at all. If unsure, check the engine code on the build plate or your rego details.

How often should ignition coils be replaced?
There’s no fixed interval. Replace coils when they misfire or test weak. Keeping plugs fresh and oil out of the plug tubes helps coils last longer.

What are the signs of a failing ignition coil?
Rough idle, hesitation on hills, poor fuel economy, harder starts, and a Check Engine light with cylinder-specific misfire codes are the usual giveaways.