Parts for your 1986 Mitsubishi Pajero-Ignition coils

1986 Mitsubishi Pajero ignition coils: what’s fitted and how to look after them

Technical sources agree that ignition coils are relevant to petrol-powered 1986 Mitsubishi Pajeros, but not to diesel models. The Mitsubishi Pajero/Montero 1983–1991 Factory Service Manual (Ignition System section) details a distributor-based system with a single can-type ignition coil on the 4G54/4G63 petrol engines. The diesel 4D55/4D56 engines use compression ignition with glow plugs and therefore have no ignition coil. This petrol-versus-diesel split is echoed in the Haynes Mitsubishi Pajero 1983–1996 manual and the Mitsubishi ASA parts catalogue.

For a 1986 Pajero petrol, the ignition coil is the heart of the spark. It steps the 12 volts under the bonnet up to tens of thousands of volts, feeding the distributor so each plug gets a clean hit. On these first-gen rigs it’s a single, can-style coil, not coil-on-plug. When it’s healthy, hot starts are easy, throttle response is crisp, and fuel economy stays respectable for an old-school wagon.

There’s no strict replacement interval for the coil, but age, heat, and vibration slowly take their toll. As part of regular servicing, a quick once-over goes a long way:

• Look for oil seepage, cracks in the case, or a swollen body.
• Check terminals for corrosion and a snug fit, clean and tighten as needed.
• Inspect the high-tension lead from coil to distributor, replace if brittle or arcing.
• Confirm good earth and solid mounting, loose brackets cause heat soak and vibration.
• If diagnosing misfires, measure primary and secondary resistance against the workshop manual specs and verify supply voltage under cranking.

Common symptoms of a tired coil include hard starting when hot, a stumble under load, rough idle, and a noticeable drop in power or economy. If those show up after ruling out plugs, leads, cap, and rotor, the coil is a prime suspect.

When replacing, choose an OE-quality coil that matches the Pajero’s ignition architecture (with or without a ballast resistor, as specified for the particular distributor/ignitor). The wrong primary resistance can cook the ignitor or deliver a weak spark. It’s smart to renew the coil lead at the same time, use dielectric grease on boots, and mount the coil away from exhaust heat where practical. Done right, a fresh coil restores reliable spark and keeps this classic truck running sweet across long Kiwi and Aussie kilometres.

Popular questions

Do all 1986 Mitsubishi Pajeros have an ignition coil?
Not all. Petrol variants (such as the 4G54) use a single ignition coil with a distributor. Diesel variants (4D55/4D56) are compression-ignition engines and don’t use an ignition coil at all, they rely on glow plugs for cold starts rather than a spark system.

How often should the ignition coil be replaced on a 1986 Pajero petrol?
There’s no fixed interval. Coils can last decades, but heat and vibration eventually degrade them. Inspect at every service, test if misfires appear, and replace on evidence of failure (cracks, oil leakage, out-of-spec resistance, or consistent spark weakness), ideally along with the coil lead.

What coil type suits a 1986 Pajero 2.6 petrol?
A 12V can-type coil designed to work with the specific ignition module and, where fitted, a ballast resistor. Matching the correct primary resistance is critical—using an incompatible “performance” coil can damage the ignitor or deliver poor spark. Checking the factory manual or OE parts catalogue for the exact engine and build spec is the safe bet.