Mitsubishi S4S-D — Draining of Fuel System
Maintenance · Fuel filter
For the Mitsubishi S4S-D, from the Mitsubishi service manual.
Applies to: Mitsubishi S4S-D, Mitsubishi S4S engine
Before you start
- When the fuel system is drained, fuel is discharged at the same time. Wipe off spilled fuel.
Procedure
- Loosen the drain plug at the bottom of the fuel filter.
- Push the priming pump about seven times to feed fuel rapidly and accelerate draining.
- After draining, securely tighten the drain plug.
- Bleed the fuel system afterwards.
Tools required
- Wrench Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Source: Mitsubishi service 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.