Yamaha SuperJet 4-Stroke Won't Start: Pump, Coils, Injectors

The SuperJet cranks but the engine does not catch, or nothing happens at all. With seven components to activate, you check everything essential in minutes with M-JET DIAGNOSTIC.

The order

• Battery voltage at start
• Relays and kill switch in the switch status
• Activate the fuel pump
• Activate coils 1 to 3 and injectors 1 to 3

Interpreting results

If pump, coils and injectors respond, you look in the fault memory for camshaft (24) and pulser coil (13). If a component does not respond, it is the candidate. If voltage is low at start, the battery is the first lead. Stand-up batteries are often small and suffer from standing idle. On the fuel system: good ventilation, no ignition sources.

Related topics

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Everything runs via app over Bluetooth, for Yamaha WaveRunners from model year 2002 to today. Learn more about the M-JET DIAGNOSTIC for Yamaha WaveRunner.