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Common trouble for fuel supply pump
Possible causes
Remedies
Check valve and piston wear or
spring crack
Check and repair, replace it if necessary.
Oil leak around joints
Tighten or replace the seal gasket.
Outlet screen clog
Check and clean it.
Oil and air leak around hand
pump
Dismantle and repair, replace it if necessary.
Common trouble and troubleshooting remedies for injector
Bad atomization of injector and
insufficient or without fuel
injection
① Needle precision pair stuck
and injection orifice clogged
② High pressure pipe joints
leakage
③ Dirt on surface of needle
Clear the carbon deposit and dirt. Clean and
grind it, replace if it cannot be reconditioned.
Determine the location of the troubles, and
then recondition or replace it.
Clean it.