Hi, I bought a daewo hydro washer (I personally don't know the quality of the brand but it was the most accessible for me) it is a DAX100-1700 after several uses it started to fail the engine runs constantly in mind if there is air in the syringe and the pressure under a little Clean step when I turn on the machine what I should do is to run the engine for a second and then stop until it demands me from the trigger but does not grab it although it does not release water until I do not pull the trigger the engine never stops