⚠️ GWM Cannon — High misfuel risk
Popular NZ diesel ute; petrol contamination of common-rail diesel is a frequent misfuel scenario.
If the engine was not started
Do not crank. Drain diesel tank before the lift pump primes contaminated fuel.
If the engine was started
Inspect high-pressure pump, injectors, fuel rail, and filters; flush lines per OEM.
⚠️ GWM position — Cannon
GWM classifies fuel contamination as misuse excluded from factory warranty. Drain via OEM tank access method; never add AdBlue to the diesel tank.
Vehicle information
| Specification | Details |
|---|---|
| Make | GWM |
| Model | Cannon |
| Market status | Sold new in New Zealand 2021–present |
| Body styles | Utility / pickup |
| Generations | Varies by model year — consult OEM for VIN |
| Engines | Diesel: 2.0L–2.4L turbo-diesel common rail (variant dependent) |
| Fuel tank capacity | 76 litres |
| Fuel system | Common-rail diesel; separate AdBlue tank on SCR variants |
| Access method | Tank drop typical — no interior access panel on NZ Cannon/Poer utes |
| Anti-siphon | Yes — filler neck anti-siphon typical |
| OEM service portal | GWM New Zealand / Haval — authorised dealer service information |
OEM access procedure
- Do not start the engine. Secure the vehicle and keep ignition off.
- Relieve fuel system pressure per OEM service information (fuel pump fuse/relay procedure).
- Disconnect the negative battery terminal.
- Access the in-tank fuel pump module using the OEM access panel or tank removal method for this model.
- Disconnect electrical connector and fuel lines; cap lines to limit vapour release.
- Remove the pump lock ring with the specified tool; extract contaminated fuel with approved equipment.
- Inspect the tank interior; replace filter and O-rings as specified.
- Reassemble, prime the system, check for leaks, and clear fault codes before road test.
Additional notes
- AdBlue is filled at the separate blue cap — mis-fill requires OEM recovery steps.
Related models
Frequently asked questions
What if petrol was added to my Cannon diesel?
Do not start the engine. Petrol strips lubrication from the high-pressure diesel system and can destroy the pump and injectors.
Does the Cannon have a fuel pump access panel?
Some variants have under-seat access; many NZ utilities require partial tank drop — confirm in OEM data for your VIN.
Can I claim misfuel repair under the Consumer Guarantees Act?
Misfuel is usually treated as misuse; remedies may still apply to workmanship of the drain — seek advice or Motor Vehicle Disputes Tribunal if disputed.
Need certified fuel contamination service?
Find an NZIFDA certified operator or read consumer guidance on wrong-fuel incidents.
Find an operatorFor consumers