It is necessary to exclude errors during startup. When starting, both cold and warm engine, the pedal «gas» do not press, but the clutch pedal, on the contrary, must be pressed.
There must be fuel in the tank, the engine must be mechanically sound, the starter must rotate the engine at the desired speed, the ignition system must be in order, there must be no leaks or contamination in the power supply system, the engine crankcase ventilation system must be in order, ground connections (engine-gearbox-body) must be reliable and fault codes must be read from the unit/board memory.
Attention: Before loosening the fuel lines, they must be cleaned with gasoline or a special cleaner.