Owner-recognizable problem
Unstable idle or stalling
The engine starts but does not maintain a stable unloaded idle, or it stops. Fuel-path conditions are possible and unresolved cases require professional diagnosis.
Possible causes
Causes are model-specific possibilities, not confirmed diagnoses. Use only the group for your model.
Yamaha F150A
- Restricted fuel filter: A restricted fuel filter can limit fuel delivery and is one possible contributor to several running problems.
- Restricted or disconnected fuel hose: A pinched, incorrectly routed or disconnected visible fuel hose can interrupt fuel delivery.
- Stale or contaminated fuel: Fuel that is old or contaminated is one possible contributor to starting, idle or power problems.