editgaq.blogg.se - 1984 porsche 911 engine air pump

When finished testing, disconnect pressure gauge and reinstall fuel pressure test port cap with sealing ball.

If any faults are found, either fuel pressure regulator or hose (vacuum supply) is faulty and should be replaced.

Remove vacuum hose from fuel pressure regulator. Catch a glimpse of Bisimotos 1984 Porsche 935 slathered in deep gunmetal and fitted with its incredibly aggressive aero package and the last thing youre expecting is an engine spec that reads.

Remove fuel pump relay jumper and reattach relay to harness connector. Internal damage to components may result. Fuel Pump Pressure SpecificationsĮngine running, vacuum hose removed from pressure regulatorĭo not use compressed air above 40 psi to blow out lines or components.

If no faults can be found, replace pressure regulator as described later. Blow compressed air through line to check for blockages. If system pressure is too high, check return line from pressure regulator to tank.If system pressure is low, repeat test while gradually pinching off return hose at rear of left fuel rail.Check that fuel pressure corresponds to specifications listed in Table b. Operate fuel pump without running engine. ^ Relieve fuel pressure and connect pressure gauge to test port (arrow) as described earlier.

Damage to the fuel lines or fuel system components could result. If the fuel pump check valve malfunctions (stuck closed), make sure the fuel pressure does not rise above 6.0 bar (87 psi). The fuel pump is capable of developing a higher pressure than that regulated by the pressure regulator. ^ Fuel system pressure is created by the fuel pump and regulated by the pressure regulator.