What Causes Difficulty in Cold Starting a Car?
1 Answers
Car cold starting difficulties can be attributed to: 1. Faulty fuel pressure regulator: The oil pressure in the fuel system directly affects the mixture concentration. If the vehicle has difficulty starting, the fuel pressure should be checked first, and the fault location can be determined by inspecting the fuel pressure regulator; 2. Coolant temperature too low: When the coolant temperature is too low, the engine control unit will increase the fuel injection volume based on the signal transmitted by the temperature sensor. Replacing the antifreeze can resolve this issue; 3. Excessive carbon deposits: When there is too much carbon buildup inside the engine, the gasoline sprayed by the cold start injector will be largely absorbed by the carbon deposits, resulting in an overly lean mixture during cold starts.