Yamaha 1.9 Litre FX, GP, VX Won't Start or Stalls

Even a new craft can fail to start once. M-JET DIAGNOSTIC runs through the chain from battery to cylinder before you order parts.

Check chain

• Battery voltage during the start attempt
• Relays and kill switch in the switch status
• Fault memory for camshaft, pulser coil, throttle valve
• Activate pump, four ignition coils and four injectors

Typical findings

A low voltage at start or a component that does not respond in the test narrows the search at once. If the engine dies again right away, a signal the control unit needs is often missing, for example from the camshaft or throttle valve. In any case check connectors and ground first. On the fuel system: good ventilation, no ignition sources.

Related topics

• Yamaha 1.9 Litre: Power Missing or Throttle Response Sluggish
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• Yamaha WaveRunner Won't Start: Diagnostics
• Diagnostics and fault codes for your Yamaha model
• All Yamaha WaveRunner diagnostics topics

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.