16. TROUBLESHOOTING
POOR MEDIUM AND HIGH SPEED PERFORMANCE
EFI Air cleaner
! the fuel pressure not correct !Clogged air cleaner element
! fuel filter clogging
! fuel injector clogging
POOR SPEED PERFORMANCE
Ignition system Compression system
!Dirty spark plug !Worn cylinder
!Improper heat range !Worn or seized piston ring
!Faulty igniter unit !Cylinder head gasket broken
!Faulty pick up coil !Cylinder gasket broken
!Carbon deposit build up
Fuel system !Improperly adjusted valve
!Clogged fuel cleaner element clearance
!Clogged jet !Improperly contacted
!Improperly adjusted fuel level valve and valve seat
!Faulty valve timing
Clutch
!Refer to “CLUTCH SLIPPING
/DRAGGING” section
Engine oil
!Improperly oil level(low or
over Oil level)
Ignition system
!Faulty spark plug
!Faulty high tension cord
!Faulty igniter unit
!Faulty pick up coil
!Faulty ignition coil
!Improperly adjusted valve
clearance
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