Parts for your 2018 Ford Transit-Ignition coils

2018 Ford Transit ignition coils — are they used?

For the 2018 Ford Transit sold in Australia and New Zealand, ignition coils are generally not relevant. The local 2018 Transit range was equipped with Ford’s Duratorq/EcoBlue TDCi diesel engines. Per Ford’s Workshop Manual and service literature (WSM Section 303-00, Engine System — General Information) these diesel engines use compression ignition and therefore do not carry a conventional spark-ignition system — no spark plugs and no ignition coils. Ford’s Motorcraft/Ford Parts catalog listings also show ignition coils only for petrol variants such as the 3.5L EcoBoost or 3.7L Ti‑VCT V6 used in some other markets, not for the AU/NZ diesel models.

That’s why customers won’t find “ignition-coils” on their 2018 Transit diesel. Instead, cold starting assistance is handled by glow plugs and a glow plug control module, while combustion control relies on high-pressure fuel injection. If a Transit diesel feels like it’s “misfiring,” the usual checks target fuel delivery (injectors, pump, filter), air management (boost/vacuum leaks, intercooler hoses, MAF/MAP sensors), EGR/intake build-up, and base engine condition — not coils.

Owners chasing smoother starts or better reliability should focus on diesel-specific service points:

• Test and replace faulty glow plugs or the glow plug control module if cold-start performance is poor.
• Keep up with fuel filter intervals and use quality diesel to protect injectors.
• Inspect charge-air hoses and clamps for boost leaks if there’s a lack of power or smoke.
• Follow the Ford service schedule outlined in the Owner’s Manual or WSM for oil, filters and intake/EGR cleanliness.

If a 2018 Transit happens to be a petrol model imported from another market, then it will have coil-on-plug ignition. For those vehicles, Ford’s Workshop Manual specifies standard coil checks (primary/secondary circuits, misfire codes) and replacement when degraded. For AU/NZ-delivered diesel Transits though, ignition coils simply aren’t part of the vehicle.

Popular questions about 2018 Ford Transit ignition coils

Does a 2018 Ford Transit have ignition coils?
Most AU/NZ 2018 Transits are diesel and do not have ignition coils. Diesel engines use compression ignition with glow plugs, so there’s no spark system. Petrol Transits in other markets do have coil-on-plug units — if unsure, check the engine code on the build plate or with a VIN lookup.

What should be serviced instead of ignition coils on a diesel 2018 Transit?
Focus on diesel essentials: glow plugs and their control module for cold starts, regular fuel filter changes, clean air filtration, and checking boost plumbing and EGR/intake for build-up. These items make the noticeable difference on drivability and starting, as confirmed by Ford’s service schedule and WSM procedures.

I’m feeling a “misfire” — could it be ignition coils on my 2018 Transit?
On a diesel Transit, no — there are no ignition coils. Similar symptoms are more likely from a worn injector, a boost leak, a fouled sensor, or low compression. On petrol-import Transits, failing coils can cause misfires, scan for fault codes and test coils before replacement.