Parts for your 2015 Nissan Pulsar-Spark plugs

2015 Nissan Pulsar spark plugs: what they do and when to replace them

Spark plugs are absolutely relevant and fitted to the 2015 Nissan Pulsar (C12) with its petrol engines, including the 1.8‑litre MR18DE and the 1.6‑litre turbo MR16DDT. This is confirmed in Nissan’s 2015 Pulsar Owner’s Manual and Maintenance Schedule for AU/NZ, the Nissan Electronic Service Manual (ESM) for the MR-series engines, and major spark plug manufacturer catalogues that list specific iridium plugs for this model.

On this Pulsar, each cylinder has a coil-on-plug ignition setup. The spark plug sits under the engine cover, threaded into the head, where it creates the spark that ignites the air–fuel mix. Good plugs help the engine start crisply on cold mornings, idle smoothly in city traffic, pull strongly on the highway, and keep fuel use and emissions in check. Worn plugs can cause hard starting, misfires, rough running under load, higher fuel consumption, and that annoying check engine light.

For routine servicing, owners should plan on iridium spark plugs and a long replacement interval. As a rule of thumb for AU/NZ conditions, the 1.8‑litre naturally aspirated Pulsar is typically on a 90,000–120,000 km interval, while the 1.6‑litre turbo may need them a bit sooner (around 60,000–80,000 km), especially if it sees lots of short trips, stop–start commuting, or spirited driving. Always confirm the exact interval and spec in the vehicle’s service schedule and under-bonnet emission/ignition labels.

When replacing, stick with the correct iridium grade and heat range called up by Nissan for the specific engine. Modern iridium plugs are usually pre‑gapped