Diagnostic
Lean fuel condition at high RPM
Cause: Fuel flow restriction caused by added components (filters, valves, fittings) in the fuel supply system
Diagnostic
Cause: Fuel flow restriction caused by added components (filters, valves, fittings) in the fuel supply system
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Ask Boat Guru about thisSpec · 10 % conditions={"applicableTo":"Mercury Marine engine fuel system components","note":"Boat fuel system tolerance may differ; consult boat manufacturer"}
Procedure · 1. Place the fuel tank in the boat so the vent is higher than the fuel level under normal boat operating conditions.
Spec · 5 seconds conditions={"condition":"Initial start or fuel system empty"}
Procedure · 1. Shift the outboard to the neutral (N) position. 2. Turn the ignition key to the START position and release the key. The electronic starting system will automatically crank the engine for starting. 3. If the engine ...
Diagnostic · Cause: Restricted fuel flow due to added components (filters, valves, fittings, etc.) in the fuel supply system Test: Inspect fuel supply system for any added restrictive components