Fuel System - TOHATSU MFS 25D Service Manual

Measure fuel pressure.
Within specified
range?
YES
Check injector clogging
and resistance.
Normal?
YES
Check fuel pump.
Normal?
YES
Check needle valve of
vapor separator.
Normal?
YES
Check ignition system,
lubrication system
and/or cooling system.
4st 25/30 2022

Fuel System

YES
Check fuel filter for clogging
and dirt, and piping for leak.
Normal?
Replace fuel regulator.
NO
Repair and clean or
replace defective parts.
YES
NO
Replace injector.
NO
Replace fuel pump.
NO
Replace needle valve.
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