There isn’t a single firing order for all Mitsubishi V6 engines. The correct sequence depends on the specific engine family and year. The most commonly referenced Mitsubishi V6s are the 6G72 and the 6G74/6G75, and many sources list a 1-4-2-5-3-6 firing order for these. Always verify the exact order for your engine code and year in the official manual.
Mitsubishi V6 engine families
Mitsubishi has used several V6 configurations across its lineup. The two most widely discussed in consumer vehicles are the 6G72 family (a 3.0-liter V6 used in older Diamante, Pajero/Shogun, and sports models) and the 6G74/6G75 family (60-degree or closely related designs used in newer Pajero/Montero and related SUVs). Engine layout, number of cams, and ignition architecture can influence the firing order, so the exact sequence can vary between generations and markets.
Firing orders by engine family
Below are the firing orders typically published for the two main Mitsubishi V6 families. Note that exact figures can vary by model year, market, and whether the engine is SOHC/DOHC or uses different ignition schemes. Always confirm with the service manual for your exact VIN.
6G72 family (3.0 L V6, 60-degree)
The following order is the firing sequence most commonly cited for the 6G72 family in consumer documentation. Use it as a reference, but verify for your specific engine variant.
- 6G72 — firing order: 1-4-2-5-3-6
Concluding note: Even within the 6G72 family, variations can occur by market or revision. Always double-check the exact specification for your vehicle.
6G74/6G75 family (3.0 L/3.5 L V6, DOHC)
The 6G74 and 6G75 families share many characteristics and are commonly documented with the same firing order as the 6G72 in consumer references. Again, confirm against your exact engine code and year.
- 6G74/6G75 — firing order: 1-4-2-5-3-6
Concluding note: While many sources list 1-4-2-5-3-6 for these DOHC V6s, variations can occur. If your vehicle’s wiring diagram or timing marks don’t align with this order, consult the official Mitsubishi service documentation for the precise sequence.
How to verify the firing order on your engine
To ensure you’re using the correct firing order for your specific car, follow these steps:
- Identify the exact engine code (for example, 6G72 or 6G74) from the engine bay stamping or the VIN/engine data plate.
- Consult the official factory service manual or a certified parts catalog for your vehicle year and market.
- Check timing components (cylinder numbering on the head, distributor rotor if equipped, and any timing-belt/chain marks) to map the sequence to the spark plugs.
- When in doubt, contact a Mitsubishi dealership service department or a qualified automotive technician with your VIN.
These steps help prevent mis-timing, which can cause poor running or damage if the engine is started with the wrong sequence.
Summary
In short, there is no universal firing order for all Mitsubishi V6 engines. The order depends on the engine family and year. The most commonly cited sequences for the main Mitsubishi V6 families are 1-4-2-5-3-6, but you should verify against your vehicle’s exact engine code and service manual. If you share your exact engine code and year, I can provide the precise firing order for your model.