Vehicle fuel heaters are seasonally used equipment. Corresponding inspection and maintenance should be done before starting, during use, and after shutdown to ensure safe and reliable use. The following items must be checked and maintained during maintenance:
1. Liquid heater is not in use season, the heater should be turned on once a month
2. Check the fuel filter and replace if necessary
3. Check the tightness of the water pipe, whether there are bends and interference parts
4. Check the airtightness of the fuel line for leaks
5. Check whether the circuit is damaged, whether the connector is loose, and whether the fixing is reliable
6. Check whether the pump motor is operating normally and whether there is abnormal noise
7. Check the glow plug or ignition generator (ignition electrode) for carbon deposits
8. Check whether each sensor is valid
9. Check the combustion-supporting air and exhaust pipes, and the smoke exhaust is smooth and unblocked
10. Whether the radiator and defroster fan have abnormal noise or card issue
11. Whether the radiating water tank is leaking
12. Ensure that the oil tank, oil pipe, and oil filter solenoid valve are clean to prevent dirt from blocking the oil circuit