High-Pressure Fuel Pump: Removal
WARNING: This page is about a different car, the 2020 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Do not loosen any fittings or plugs on the high-pressure fuel pump.
- With the vehicle in NEUTRAL, position it on a hoist. Refer to: Jacking and Lifting - Overview .
- Release the fuel system pressure. Refer to: Fuel System Pressure Release .
- Disconnect the battery negative cable. Refer to: Battery Disconnect and Connect .
- Disconnect the high-pressure fuel pump electrical connector.
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NOTE: When removing or installing the high-pressure fuel pump noise insulator, spreading the openings will reduce the risk of damage.
Remove the high-pressure fuel pump noise insulator.
- Remove the lower intake manifold. Refer to: Lower Intake Manifold .
- Detach the fuel injector main harness retainer.
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NOTE: To release the fuel pressure in the fuel rail-to-fuel rail high-pressure fuel tube, wrap the fuel rail-to-fuel rail high-pressure fuel tube flare nuts with a shop towel to absorb any residual fuel pressure during the loosening of the fuel rail-to-fuel rail high-pressure fuel tube flare nuts.
Remove and discard the high-pressure fuel pump to fuel rail high-pressure fuel tube retaining nut. Disconnect the high-pressure fuel pump to fuel rail high-pressure fuel tube flare nuts, then remove and discard the high-pressure fuel pump to fuel rail high-pressure fuel tube.
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NOTE: Make note of the high-pressure fuel pump supply Oetiker® clamp end location for correct installation.
Disconnect the quick release coupling, then remove the high-pressure fuel pump fuel feed tube. Refer to: Quick Release Coupling .
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NOTE: Alternately loosen the high-pressure fuel pump bolts one complete revolution at a time.
Remove and discard the high-pressure fuel pump bolts, then remove the high-pressure fuel pump.
- Remove and discard the high-pressure fuel pump O-ring seal.
- Remove the high-pressure fuel pump roller tappet.
- Inspect the high-pressure fuel pump roller tappet. If any flat spots or scoring are found, especially in the indicated areas, then inspect the high-pressure fuel pump and the high-pressure fuel pump roller tappet drive lobe. Install new components as needed.
- Loosen the high-pressure fuel pump mounting plate bolt, then remove the mounting plate.
- Remove any dirt or foreign material from the high-pressure fuel pump bolt holes.