Parts for your 2018 Haval H6-Ignition coils

2018 Haval H6 Ignition Coils — Purpose, Care, and When to Replace

Technical references confirm the 2018 Haval H6 is fitted with ignition coils. The Haval H6 Owner’s Manual (2018 AU/NZ), the Great Wall Motors GW4C20/GW4C20B engine service manual, and Haval’s Electronic Parts Catalogue all specify a coil-on-plug ignition system for the 2.0‑litre turbo petrol. Industry databases such as Autodata/HaynesPro also list individual coil packs for each cylinder. So yes, ignition coils are relevant to this model.

The H6’s turbocharged petrol engine relies on coil-on-plug units to transform the 12V battery feed into a high-voltage spark right at each plug. That strong, well-timed spark is what keeps combustion clean, power smooth, and fuel economy on point. When coils get tired, you’ll often feel it first under load—think uphill or overtaking—where spark demand is highest.

As part of regular servicing, it’s smart to check the coils any time the spark plugs are out. Follow the logbook schedule for plug replacement and inspect coil boots for cracks, carbon tracking, or oil in the plug wells (which can point to a rocker cover gasket leak). Keep connectors clean and latched, and avoid blasting the engine bay with water around the coil tops. A tiny dab of dielectric grease on the inside of the boot can help with future removal and sealing.

Replacement strategy depends on kilometres and symptoms. If one coil has failed on a low‑kilometre H6, replacing just that coil with an OE‑quality part is fine. On higher‑kilometre vehicles, many owners choose to do the full set proactively to restore smooth running and avoid repeat visits. Always match the part number to the VIN, seat the coil squarely on the plug, and tighten fixings to workshop‑manual torque—don’t overdo it.

Typical signs a coil is on the way out include:

• Rough idle, stumble on acceleration, or a noticeable loss of grunt
• Heavier fuel use and a fuel smell from partial misfires
• Check engine light with misfire codes (e.g., P0300–P0304) or coil circuit codes

Good coils plus fresh plugs keep the H6’s turbo happy, protect the catalytic converter from raw fuel, and make daily driving feel crisp. If in doubt, scan for codes, inspect physically, and test under load—then replace in pairs or as a set if the kilometres and budget make sense.

Popular questions about 2018 Haval H6 ignition coils

Does the 2018 Haval H6 have ignition coils?

Yes. The 2.0‑litre turbo petrol uses a coil‑on‑plug setup with one ignition coil per cylinder. This is documented in the Haval Owner’s Manual, GWM service literature for the GW4C20/GW4C20B engine, and parts catalogues listing the ignition coil assembly.

How often should the ignition coils be replaced?

There’s no fixed coil interval—many last well past 100,000 km. Inspect coils whenever you replace spark plugs per the logbook. Replace any coil showing faults, damage, or persistent misfire. On higher‑kilometre H6s, replacing the full set pre‑emptively can be good value.

What are the signs of a failing coil on the H6?

Common clues are rough idle, misfire under load, sluggish acceleration, higher fuel use, and a check engine light with misfire or coil circuit codes. If symptoms appear after rain or washing the engine bay, moisture ingress at the coil boots is a likely culprit.