Honda VT750C2 Shadow Spirit Service Manual page 104

FUEL SYSTEM
Engine stalls, hard to start, rough idling
• Restricted fuel line
• Fuel mixture too lean/rich
• Contaminated/deteriorated fuel
• Intake air leak
• Misadjusted idle speed
• Misadjusted pilot screw
• Misadjusted float level
• Restricted fuel tank breather hose
• Clogged air cleaner
• Clogged slow circuit
• CloggedSE vCllve circuit
• Faulty EVAP control system (California type only)
- Faulty EVAP CAV control valve
- Faulty EVAP purge control valve
- Clogged hose of the EVAPcontrol system
• Faulty ignition system (page 19-5)
Afterburn when engine braking is used
• Lean mixture in stow circuit
• Faulty air cut-off valve
• Faulty PAIR sy$fem
- Faulty PAIRcontrol valve
• Improper PAIR control valve for high altitude riding (page 6-26)
• Faulty ignition system (page 19-5)
Backfiring or misfiring during acceleration
• Lean mixture
• Faulty ignition system (page 19-5)
• Faulty accelerator pump
Poor performance (driveability) and poor fuel economy
• Clogged fuel system
• Faulty EVAP control system (California type only)
- Faulty EVAP CAV control valve
- Clogged hose of the EVAP CAV system
• Faulty ignition system (page 19-5)
6-5