Nozzle tip is a normally closed valve ( normally closed valve means when there is no input control signal , the valve has been turned off ; while the valve is normally open when there is no input control signal , the valve has been turned on ) by a down movement of the needle valve to control the valve opening and closing . When the fuel injection ECU issued instructions coil voltage causes current to flow through the injector signal within its produce magnetic fields to pick up the needle valve , allowing the valve to open so that oil can be ejected from the injection holes . Nozzle for use , you need to pay attention to is how to clean the nozzle tip , following a brief injector cleaning steps:
( 1 ) Remove the fuel rail retaining screws .
( 2 ) exploratory shake and remove the fuel rail , injectors seals to avoid damage .
( 3 ) Always disconnect the negative battery guarantee .
( 4) Remove the fuel rail injectors from there .
( 5 ) with homemade injector nozzle plugs and wires and connections .
( 6 ) with a pressure of clearing agent to replace the oil pressure in the actual work .
( 7 ) It has always maintained a connection wire and Comments .
( 8 ) On the nozzle head for cleaning.
( 9 ) When installing the fuel rail , pay attention to the position of the injector nozzle clips and seals .
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