What Causes Difficulty in Starting a Cold Engine?

[VioletMarie]

The reasons for difficulty in starting a cold engine are: 1. Air leakage in the intake system; 2. Fuel pressure is too low; 3. Air filter is clogged; 4. Faulty water temperature sensor; 5. Faulty air flow meter; 6. Malfunctioning idle control valve or additional air valve; 7. Cold start injector not working; 8. Fuel injector leakage; 9. Incorrect ignition timing; 10. Wiring from the start switch to the computer is open; 11. Cylinder compression pressure is too low. Methods to address difficulty in starting a cold engine: 1. Check the battery status; 2. Replace with suitable engine oil; 3. Replace spark plugs in a timely manner. Methods for warming up the engine: 1. Drive after 30 seconds to 1 minute of idling; 2. Maintain low-speed driving; 3. Drive normally after the engine temperature rises to the normal operating temperature.