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Zexel VRZ

Correct and affordable repair of ZEXEL VRZ pumps for Mitsubishi Pajero (aka Shogun, DiD or CK).

pajero 03 take command 2


When your pedigree SUV feels sluggish or wont start, you know the drill.

The Mitsubishi Pajero first saw the light of day 25 years ago – and the Pajero CK first hit the streets of Manila in 1999.

Available locally as a long-wheel-base five door model, this big boy also comes in a 3-door Japan-domestic version often found in local car auctions.

pajero-big-2003Need to make a quick getaway? The Pajero, with a 3.2 liter diesel engine and ZEXEL VRZ fuel injection pump, can reach a top speed of 170kph. It weighs more than three tons, but the nine-time Dakar Rally-winner already proved its enormous pulling power which casts it as the genuine article in a world of soft-roaders and cute 4x4s.

 

What makes the VRZ special?

vrz illustration


With radial plunger position-control distributor type fuel injection pumps (called VRZ pumps), the fuel is pressurized by two radial plungers positioned axially to the drive shaft.

Fuel injection quantity and timing are precisely controlled by an electronic control unit. An electronic governor (GE actuator) utilizes position control to adjust the fuel injection quantity. The timer is a timing control valve (TVC) which utilizes duty control to adjust timing.

 

Instead of utilizing the previous face cam, the VRZ pump utilizes a cam ring to enable fuel injection at high pressures, making it suitable for small, direct injection diesel engines.