What Causes a Van to Have Insufficient Fuel Supply?
1 Answers
Van insufficient fuel supply may be caused by: 1. Spark plug gap being too large or too small—excessive gap causes misfiring at high speeds, while insufficient gap results in weak sparks; 2. Low fuel system pressure; 3. Dirty fuel injectors; 4. Malfunction of the throttle position sensor or accelerator pedal position sensor; 5. Faulty idle control valve or engine control unit. Solutions for insufficient fuel supply in vans include: 1. Inspecting the electric fuel pump, fuel filter, and fuel pressure regulator; 2. Measuring fuel pressure, electric fuel pump pressure, and holding pressure; 3. Testing the engine's air-fuel ratio; 4. Adjusting the spark plug gap.