Symptoms
Diesel weeping around the pump, hard or rough cold starts, irregular shifting on automatics, smoke.
The fix, step by step
- Find out which pump you have.
- Series 1 (to 1997) vans use a mechanical pump, which owners say is prone to leaks but can be resealed and recalibrated in North America.
- Series 2 vans use an electronically controlled pump, which a shop told one owner no one in North America can calibrate.
- One owner's rough cold starts and irregular shifting cleared up after a pump overhaul, and a Delica Canada member says a new pump front shaft seal 'does wonders'.
- Mark the pump timing before removal and have any rebuild bench-calibrated.
Tools & part numbers
- Pump timing tools
- sockets and extensions
- new seals
- diesel specialist for the rebuild.
Where to buy the parts
Injection pump seal kit and genuine fuel-system partsMegazip (genuine Mitsubishi catalogue, search by frame number) ↗
Used injection pumps and parts listingsDelica Canada Trader ↗
Hunting a used or discontinued part? Search eBay Motors for Mitsubishi Delica Space Gear parts →
Rated for a competent home mechanic with a decent tool kit. Confirm torque figures, fluids and procedures against the factory service manual for your VIN, support the truck on stands rather than a jack, and work at your own risk (disclaimer). Some parts links are affiliate links, which pay us a small commission at no cost to you.