Poor Performance At High Speed; Poor Handling - Honda VTR1000F Service Manual

TROUBLESHOOTING
POOR PERFORMANCE AT HIGH SPEED
Possible cause
1. Disconnect fuel tube at carburetor - - - - Fuel flow restricted-------o .. - . Restricted fuel tube
and pump the vacuum line • Restricted fuel tank breather tube
I •
Faulty fuel valve
Fuel flows freely • Clogged fuel strainer
!
2. Check carburetor for clogging - - - - - Clogged-----------o .. - . Carburetor not serviced frequently
I
enough
Not clogged
!
3. Check valve timing - - - - - - - - - Incorrect
- - - - - - - - - - < .. - •
Cam sprockets not installed properly
I
Correct
!
4. Check ignition t i m i n g - - - - - - - - - Incorrect - - - - - - - - -.. - . Faulty ignition control module (ICM)
I •
Faulty ignition pulse generator
Correct
!
5. Check valve spring - - - - - - - - - Weak - - - - - - - - -......
~.
Faulty valve spring
!
Not weak
POOR HANDLING
Possible cause
1.lf steering is heavy
---------------------~..
• Steering stem adjustment nut too tight
• Damaged steering head bearings
2.lf either wheel is wobbling
- - - - - - - - - - - - - - - - - - - - - 0 .. _.
Excessive wheel bearing play
• Bent rim
• Improperly installed wheel hub
• Excessively worn swingarm pivot
bearings
• Bent frame
3.lf motorcycle pulls to one side
- - - - - - - - - - - - - - - - - - 1 .. _.
Front and rear wheels not aligned
• Bent fork
• Bent swingarm
• Bent axle
• Bent frame
21-4