Fuel System - TOHATSU TLDI MD 115A SERIES Service Manual

O
Troubleshooting
K
Check operation of fuel
feed pump (FFP).
Operating
noise heard?
YES
Measure fuel pressure.
Out of specified
range?
YES
Check fuel regulator of air rail.
Normal?
YES
Check air rail for leak and
damage.
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9-18

Fuel System

NO
Check electrical conductivity
of wire harness and fuse.
Conductive?
Check if proper voltage is
supplied to fuel feed pump
(FFP).
Battery voltage
normal?
Replace fuel feed pump
(FFP).
NO
Check fuel injector clogging
and resistance.
Normal?
Check ignition system
and compression
pressure.
NO
Repair or replace
defective parts.
YES
NO
YES
NO
Replace fuel injector.
YES
NO
Replace fuel regulator.
Check or replace
battery.
TLDI 115A 2007