Starting Problems; Engine; Fuel System; Electrical Systems - Yamaha XJR1300(L) 99 Service Manual

EAS00844
NOTE:
The following guide for troubleshooting does not cover all the possible causes of trouble. It should be
helpful, however, as a guide to basic troubleshooting. Refer to the relative procedure in this manual for
checks, adjustments, and replacement of parts.

STARTING PROBLEMS

ENGINE

Cylinders and cylinder head(-s)
S Loose spark plug
S Loose cylinder head
S Damaged cylinder head gasket
S Worn or damaged cylinder
S Incorrect valve clearance
S Incorrectly sealed valve
S Incorrect valve-to-valve-seat contact
S Incorrect valve timing
S Faulty valve spring
S Seized valve
Pistons and piston rings
S Incorrectly installed piston ring
S Damaged, worn or fatigued piston ring
S Seized piston ring
S Seized or damaged piston
Air filter
S Incorrectly installed air filter
S Clogged air filter element
Crankcase and crankshaft
S Incorrectly assembled crankcase
S Seized crankshaft

ELECTRICAL SYSTEMS

Battery
S Faulty battery
S Discharged battery
Fuses
S Blown, damaged or incorrect fuse
S Incorrectly installed fuse
Spark plugs
S Incorrect spark plug gap
S Incorrect spark plug heat range
S Fouled spark plug
S Worn or damaged electrode
S Worn or damaged insulator
S Faulty spark plug cap
Ignition coils
S Damaged ignition coil
S Broken or shorted primary or secondary coils
S Faulty spark plug lead
STARTING PROBLEMS
TROUBLESHOOTING

FUEL SYSTEM

Fuel tank
S Empty fuel tank
S Clogged fuel filter
S Clogged fuel tank breather hose
S Deteriorated or contaminated fuel
Fuel cock
S Clogged or damaged fuel hose/vacuum hose
Carburetors
S Deteriorated or contaminated fuel
S Clogged pilot jet
S Clogged pilot air passage
S Sucked-in air
S Damaged float
S Worn needle valve
S Incorrectly installed needle valve seat
S Incorrect fuel level
S Incorrectly installed pilot jet
S Clogged starter jet
S Faulty starter plunger
S Incorrectly adjusted starter cable
Ignition system
S Faulty ignitor unit
S Faulty pickup coil
Switches and wiring
S Faulty main switch
S Faulty engine stop switch
S Broken or shorted wiring
S Faulty neutral switch
S Faulty start switch
S Faulty sidestand switch
S Faulty clutch switch
S Incorrectly grounded circuit
S Loose connections
Starting system
S Faulty starter motor
S Faulty starter relay
S Faulty starting circuit cutoff relay
S Faulty starter clutch
8-1
TRBL
SHTG