Parts for your 2016 Ford Transit-Ignition coils

2016 Ford Transit ignition coils: what’s fitted and how to look after them

Technical references including the Ford Workshop Manual (Section 303 for Engine Systems, 2015–2017 Transit) and the Ford/Motorcraft parts catalogue confirm that 2016 Ford Transit petrol (gasoline) engines—such as the 3.7L Ti‑VCT V6 and 3.5L EcoBoost V6—use coil‑on‑plug ignition coils. They also confirm that diesel variants—such as the 2.2L Duratorq TDCi common in AU/NZ and the 3.2L Power Stroke—do not use ignition coils because compression‑ignition diesels don’t require spark. So, ignition coils are relevant on 2016 Transit petrol models, and not used on diesel models.

On petrol 2016 Ford Transits, the ignition coils sit directly on each spark plug (coil‑on‑plug). Their job is to step up battery voltage to thousands of volts and fire the plug at exactly the right time. Strong spark means clean starts, smooth idle, decent fuel economy and good pulling power—pretty important when the van’s loaded or towing.

There isn’t a strict service interval for coils, they’re typically replaced as needed. As part of routine servicing, it’s smart to inspect coils whenever plugs are changed or if there’s a misfire. Many owners time a close look around the 100,000–160,000 km mark, or earlier if the van works hard in heat or high humidity.

• Watch for symptoms: rough idle, hesitation under load, a flashing check‑engine light, poor fuel economy, or fault codes like P030X (cylinder‑specific misfire).
• When replacing plugs, check each coil boot for oil intrusion, cracking or carbon tracking. Replace damaged boots and use a smear of dielectric grease to seal out moisture.
• If one coil fails, it’s fine to replace just that coil, but if several are ageing or the mileage is high, doing them as a set can save repeat downtime.
• Use quality coils that match OE spec to avoid radio interference and intermittent faults. Ensure connectors click home and coil hold‑down bolts are snug.

Keeping coils dry is key. Fix any rocker cover gasket leaks that let oil into the plug wells, and avoid blasting the top of the engine with wash‑down water. If a misfire pops up after heavy rain, pull the coils, dry the boots and terminals, and re‑fit with dielectric grease.

For diesel 2016 Transits, there’s no ignition coil system by design—combustion is triggered by high compression and fuel injection timing—so any “misfire” feeling is usually down to fuel, air, EGR, or glow plug issues rather than spark.

Popular questions about 2016 Ford Transit ignition coils

Does a 2016 Ford Transit diesel have ignition coils?
No. Diesel Transits use compression ignition, so there are no spark plugs or ignition coils. If it feels like a misfire on a diesel, look to injectors, fuel pressure, air leaks, EGR, or glow plugs instead.

How long do coils last on a 2016 Transit petrol?
Often well past 100,000 km, but heat, vibration and moisture can shorten life. Replace only when faulty, or proactively if multiple coils show cracking, oil contamination or repeated misfire codes.

Should all coils be replaced at once?
Not mandatory. Replacing the single failed coil is acceptable. If several are original and the van’s at high kilometres, doing a matched set can prevent future call‑backs and keeps performance even across cylinders.