Electric fuel pump- paul-ryan.info Solenoid Contacts Rod Return spring Exit valve Inlet valve Chamber Diaphragm
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An electric pump has a similar diaphragm mechanism; it is worked by a rod that is drawn into a solenoid switch until it opens a set of s to turn off the current.

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How a fuel pump works

A circulating fuel system This fuel system has both supply and return pipes along which petrol c...