Poor Performance At High Speed; Poor Handling - Honda 1998 VT750C Service Manual

TROUBLESHOOTING
POOR PERFORMAMCE AT HIGH SPEED
Possible cause
1. Disconnect fuel tube at carburetor and
Fuel flow restricted
..
• Clogged fuel line
pump the vacuum line
• Clogged fuel tank breather
I
• Faulty fuel valve
Fuel flows freely
• Clogged fuel filter
+
2. Remove the carburetor and check for Clogged
..
• Clean
clogging
I
Not clogged
+
3. Check valve timing Incorrect
..
• Cam sprocket not installed
I
properly
Correct
+
4. Check ignition timing
Incorrect
..
• Faulty ignition control module
I
• Faulty ignition pulse generator
Correct
+
5. Check valve spring Weak
..
• Faulty spring
+
Not weak
POOR HANDLING
Possible cause
1. If steering is heavy
- - - - - - - - - - - - - - - - - - - - - - - l..
~
.
Steering stem adjusting nut too
tight
• Damaged steering head bearings
2. If either wheel is wobbling - - - - - - - - - - - - - - - - - - . . . . • Excessive wheel bearing play
• Bent rim
• Improper installed wheel hub
• Swingarm pivot bearing
excessively worn
• Bent frame
3. If the motorcycle pulls to one side
21-4
- - - - - - - - - - - - - - -..... ~ • Faulty shock absorber
• Front and rear wheel not aligned
• Bent fork
• Bent swingarm
• Bent axle