the oil pump of the burner is damaged

In order to troubleshoot a fault, the cause of the fault must be checked. For this purpose, possible reasons such as whether there is oil in the oil tank, whether the valve is closed and blocked, whether there is air in the system, whether the oil filter and nozzle are clean, whether the oil pressure and vacuum degree are normal should be eliminated. If you still can't solve the problem. Check that the coupling between the motor and the oil pump is in good condition. If the pump still does not work, replace the pump.