Poop Performance At High Speed - Honda VT750C2 Shadow Spirit Service Manual

TROUBLESHOOTING
POOR PERFORMANCE AT HIGH SPEED
1.
2.
3.
4.
5.
6.
7.
Fuel Line Inspection
Disconnect fuel line at carburetor.
Does fuel flow freely?
NO - . Restricted fuel line and strainer
• Restricted fuel tank breather
• Faulty fuel valve vacuum hose
YES - GO TO STEP 2.
Spark Plug Inspection
Remove and inspect the spark plug.
Is the spark plug in good condition?
NO _. Plug not serviced frequently enough
• Incorrect spark plug heat range
• Incorrect spark plug gap
• Faulty SE valve
• Air cleaner dirty
YES - GO TO STEP 3.
Carburetor Inspection
Check carburetor for clogging.
Is the carburetor clogged?
YES - Carburetor not serviced frequently enough.
NO - GO TO STEP 4.
Ignition Timing Inspection
Check ignition timing.
Is the ignition timing correct?
NO - . Faulty rCM
• Faulty ignition pulse generator
• Faulty TP sensor
YES - GO TO STEP 5.
Valve Timing Inspection
Check valve timing.
Is the valve timing correct?
NO - Cam sprockets not installed properly.
YES - GO TO STEP 6.
Valve Spring Inspection
Check valve springs.
Is the valve spring free length within specification?
NO - Faulty valve spring.
YES - GO TO STEP 7.
Camshaft Inspection
Remove and inspect the camshaft.
Is the cam lobe height within specification?
NO - Faulty camshaft.
YES - Camshaft is OK