Parts for your 2019 Haval H6-Ignition coils

2019 Haval H6 ignition coils — what they do and how to look after them

Based on technical sources including the Haval H6 (2017–2020) Service/Workshop Manual and the GW4G15B/GW4C20B engine training and parts documentation, the 2019 Haval H6 uses ignition coils. Both the 1.5‑litre and 2.0‑litre turbocharged petrol four‑cylinder engines run a coil‑on‑plug setup, with one ignition coil per cylinder. These documents outline diagnosis, removal and installation procedures for the ignition coil assemblies, confirming they’re a standard serviceable component on this model.

The ignition coil’s job is simple but critical: it transforms the 12‑volt supply into the high voltage needed to fire the spark plug. On the H6’s coil‑on‑plug design, each coil sits directly on its spark plug for efficient, precise ignition control—key for smooth idle, good fuel economy and strong turbo response.

There’s no fixed replacement interval for coils on the 2019 H6, they’re changed when they fail or show deterioration. As part of regular servicing, it’s smart to:

• Scan for misfire or coil circuit codes (e.g., P0301–P0304, P0351–P0354).
• Inspect coil boots for cracking, oil contamination and carbon tracking.
• Check spark plug condition and gap, worn plugs stress coils.
• Keep water and harsh cleaners away from the coil tops and harness connectors.

Common signs a coil is on the way out include a shaky idle, hesitation under load, higher fuel use, a sulphur/exhaust smell and the check-engine lamp. If the H6 is running rough, a quick code read usually points to the suspect cylinder.

Replacement is straightforward workshop work: disconnect the battery if required by the workshop’s safety routine, unplug the coil connector, remove the coil hold‑down bolt, lift the coil, fit the new one and torque to spec. Use quality OEM‑spec coils and new spark plugs if they’re due. Avoid packing the boot with excessive grease—only a light smear of appropriate dielectric grease on the inside lip if the manual allows. If oil is found in the plug wells, address the rocker cover gasket first or the new coil may fail early.

With healthy plugs and clean, dry plug wells, H6 coils typically last a long time—often well past 120,000 km. Regular checks at service time help catch issues early and keep the turbo four purring.

Popular questions about 2019 Haval H6 ignition coils

Does the 2019 Haval H6 have individual ignition coils?
Yes. The 2019 H6 uses a coil‑on‑plug system with one coil per cylinder on its 1.5T and 2.0T petrol engines. This improves spark accuracy and reduces energy loss compared with older distributor or single‑coil systems.

How long do ignition coils typically last on a 2019 H6?
There’s no set interval, but many last well beyond 120,000 km. Heat, worn spark plugs and oil or moisture in the plug wells are the main coil killers. Keeping plugs fresh and the top of the engine clean helps extend coil life.

What are the symptoms of a failing ignition coil on the H6?
Expect rough idle, misfire under load, sluggish acceleration, higher fuel consumption and an illuminated check‑engine light. Scan tools often show P030X misfire codes or P035X coil circuit codes pinpointing the cylinder at fault.