Parts for your 1998 Nissan Navara-Ignition coils

1998 Nissan Navara ignition coils — what’s fitted and what to service

Based on the Nissan D22 factory service manual (1997–2000), Autodata, and common AU/NZ workshop references (Gregory’s/Haynes), a 1998 Nissan Navara may have an ignition coil depending on the engine. Petrol variants (typically the KA24E 2.4-litre) use a single can-type ignition coil feeding a distributor. Diesel variants (TD27 or QD32) are compression-ignition engines and do not use ignition coils or spark plugs at all. That means ignition coils are relevant for 1998 Navara petrol models, and not applicable to the diesels.

On 2.4 petrol models, the ignition coil’s job is to take the 12-volt supply and step it up to tens of thousands of volts so the spark can jump the plug gap under compression. On a ’98 Navara KA24E, that high voltage is routed through the distributor to each cylinder. When a coil weakens, owners notice hard starting, a rough idle, misfires under load, higher fuel use, and sometimes a sweet eggy smell from unburnt fuel in the exhaust. In many cases, the engine light will flick on with a random misfire code.

Coils aren’t a routine replacement item, but they should be checked at each major service. Practical checks include:

• Inspecting the coil tower and plug for carbon tracking, arcing marks, or hairline cracks.
• Measuring primary/secondary resistance against workshop specs and comparing cold vs warm.
• Confirming clean, tight power and earth connections and a healthy battery/charging voltage.
• Ensuring the distributor cap, rotor and leads aren’t the real cause of a weak spark.

For replacement, quality matters. A decent OEM-equivalent coil will usually outlast bargain options, especially with Australia and New Zealand heat-soak. It’s smart to refresh the distributor cap, rotor and spark plug leads at the same time, then fit correctly gapped plugs. Always disconnect the battery before swapping the coil, mount it firmly with good heat dissipation, and avoid leaving the ignition on without the engine running, which can overheat a coil.

With good voltage supply, tidy wiring and sound secondary components, a Navara coil can run for well over 150,000 km. If there’s persistent misfire under load, rain-related stumbles, or visible cracking, replacement is inexpensive insurance for reliable touring and towing.

For diesel 1998 Navara models (TD27/QD32), an ignition coil isn’t used. These engines ignite fuel by compressing air until it’s hot enough for combustion, so there’s no spark system, instead, the focus is on glow plugs for cold starts and a healthy fuel system.

Popular questions

Does a 1998 Navara diesel have an ignition coil?
No. The TD27 and QD32 diesels are compression-ignition engines, so they don’t need spark plugs or coils. If there’s hard starting when cold, attention should go to glow plugs, battery condition and fuel delivery, not an ignition coil.

Where is the ignition coil on a 1998 Navara 2.4 petrol?
On KA24E petrol models, the single coil is typically mounted in the engine bay near the distributor on the inner guard or bracket, with one high-tension lead running to the distributor cap and a two-wire plug for power and switching.

How long should an ignition coil last on a ’98 Navara petrol?
There’s no fixed interval. Many last well past 150,000 km, but heat, vibration and old leads can shorten life. If there’s misfire under load, rough idle, or visible coil damage, testing and timely replacement is the go.