KYMCO Super 8 50, Service Manual

Page: 55 / 185

5. FUEL INJECTION SYSTEM
Super 8 50
5-4
TROUBLESHOOTING
Engine won’t start
Backfiring or misfiring during acceleration

Battery voltage too low

Ignition system malfunction

Fuel level too low

Pinched or clogged fuel hose Poor performance (drive ability) and poor

Faulty fuel pump operating system fuel economy

Clogged fuel filter (fuel pump)

Pinched or clogged fuel hose

Clogged fuel injector

Faulty fuel injector

Faulty spark plug or wrong type

Cut by ECU due to angle detect sensor or incorrect function
Engine stall, hard to start, rough idling

Intake air leak

Fuel contaminated/deteriorated

Pinched or clogged fuel hose

Idle speed misadjusted