Mitsubishi S6R S6R2 / S6R- S6R2 — Check the fuel injection start pressure
Testing & diagnosis · Fuel injection nozzle
For the Mitsubishi S6R S6R2 / S6R- S6R2, from the Mitsubishi operator's manual.
Applies to: Mitsubishi S6R engine, Mitsubishi PS6 engine
Before you start
- Do not allow injected fuel to contact skin or body - it has extremely high pressure and can penetrate skin
Procedure
- Attach the fuel injection nozzle to the nozzle tester.
- While watching the pressure gauge, push the handle down slowly.
- The pressure indicated when the gauge needle suddenly decreases is the injection start pressure.
- If out of standard, turn the adjusting screw to the standard value.
- Tighten the screw to increase pressure and loosen it to decrease pressure.
- Secure the cap nut and the set screw to their specified torques.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Standard value 34.32 MPa {350 kgf/cm2} [4,979 psi]
- Cap nut torque 74 ± 5 N-m
- Set screw torque 39 ± 5 N-m
Source: Mitsubishi operator's manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.