冷車開車, 溫車時再撻車

fuel pump fail to hold pressure (fuel pump defective) one way valve internal leak,
try as below
ignition on, don't start, switch off the key again, turn the ignition on again, then start the engine, is it better, if answer is yes, the fuel pump need to replace.

睇下個火咀有無問題, 可能火咀耐無換, 有炭屎積住左, 請檢查下啦...