Parts for your 2007 Nissan Primera-Ignition coils

2007 Nissan Primera ignition coils: what they do and when to replace

Technical sources for the P12-series (factory workshop manual and standard ignition system references) make it clear that the 2007 Nissan Primera uses coil-on-plug ignition coils on its petrol engines (1.8 QG18DE and 2.0 QR20DE), with one coil per cylinder. The diesel 2.2 dCi (YD22DDTi) variant does not use ignition coils at all, as it relies on compression ignition and glow plugs instead. So, ignition coils are relevant to petrol models, but not to the diesel.

On the petrol 2007 Primera, the ignition coils transform the car’s 12 volts into the high voltage needed to fire each spark plug. Being coil-on-plug, they sit directly over the plugs under the engine cover, eliminating old-school leads and letting the ECU control spark timing with precision. This design improves cold starts, fuel efficiency, and emissions, but places each coil in a hot, vibrating environment, so age and heat eventually take their toll.

Servicing-wise, ignition coils aren’t a routine “time-based” replacement on this model, they’re replaced when symptoms appear or test results confirm a fault. Common signs include a rough idle, hesitation under load, poorer fuel economy, and a check-engine light with a cylinder-specific misfire code (P0301–P0304). Oil in the plug tubes from a rocker cover gasket leak, cracked coil boots, or heat-soaked electronics often sit at the heart of coil issues.

• Good practice during servicing:
  • Renew spark plugs to the correct spec and gap at the recommended interval, tired plugs stress coils.
  • Inspect plug wells for oil or moisture and address rocker cover gasket leaks early.
  • Use dielectric grease sparingly on boots to help sealing and future removal.
  • When one coil fails on a high‑kilometre car, consider replacing the full set to restore balance.

Diagnosis can be as simple as a “swap test” (move a suspect coil to another cylinder and see if the misfire follows) plus scan data. Resistance checks are limited on coil-on-plug units, so a known-good substitution is often the quickest path. When fitting new coils, seat the boots cleanly, avoid overtightening the hold-down bolts, and follow the torque values in the service manual.

For the diesel 2.2 dCi, ignition coils aren’t used because combustion is initiated by high compression rather than a spark, that engine uses glow plugs for cold starting assistance.

Popular questions about 2007 Nissan Primera ignition coils

How many ignition coils does a 2007 Nissan Primera have?
Petrol variants have four coils, one per cylinder, mounted directly over each spark plug. The 2.2 dCi diesel has none, as it doesn’t use a spark ignition system.

Should all coils be replaced at once or just the faulty one?
If a single coil fails on a lower‑kilometre car, replacing just that unit is fine. On higher‑kilometre cars where multiple coils show age-related symptoms, many owners opt to replace the full set to avoid repeat visits and keep the engine running smoothly.

How long do ignition coils typically last?
It varies with heat, plug condition, and driving, but many last well past 120,000–180,000 kilometres. Coils can fail earlier if the spark plugs are overdue or there’s oil in the plug tubes. Regular plug changes and fixing gasket leaks help coils last longer.