Order of execution
1. Check the fuel level in the tank.
2. Check the connections of all wires of the ignition system, coil and spark plugs. Reconnect disconnected or poorly connected connections.
Ignition wire connections, coil and spark plugs
3. If you smell gasoline, the air-fuel mixture may have been over-rich ("pouring candles").
4. Check the fuel line in the engine compartment.