High-Pressure Fuel Pump: Installation

Inspect the high-pressure fuel pump 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 tappet drive lobe. Install new components as needed.

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NOTE: Only rotate the crankshaft Clockwise (CW) or damage to the engine may occur.

With the help of an assistant, using the crankshaft pulley bolt, turn the crankshaft Clockwise (CW) until the high-pressure fuel pump cam lobe is at BDC

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NOTE: Align the notch on the high-pressure fuel pump tappet with the groove in the high-pressure fuel pump drive unit bore.

Apply clean engine oil to the high-pressure fuel pump drive unit bore and the drive lobe and the high-pressure fuel pump tappet. Install the high-pressure fuel pump tappet.

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Install a new high-pressure fuel pump O-ring seal. Lubricate the new O-ring seal with clean engine oil.

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NOTE: Install all the bolts finger tight before final tightening.

Tighten each bolt 0.5 turn at a time, until the components are in full contact, before final tightening.
- Install the high-pressure fuel pump.
- Install the high-pressure fuel pump bolts.
  Torque: Stage 1: 97 lb.in (11 Nm) | Stage 2: 45°
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NOTE: Make sure that a new component is installed.

NOTE: Install all the nuts and bolts finger tight before final tightening.

NOTE: Calculate the correct torque wrench setting for the following torque using the Torque Wrench Adapter Formulas in the chart below.

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Position the high-pressure fuel tube.

Torque: Stage 1: 89 lb.in (10 Nm) | Stage 2: 30°

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1. Connect the high-pressure fuel pump quick release coupling. Refer to: Quick Release Coupling .
2. Connect the high pressure fuel pump electrical connector.
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NOTE: When removing or installing the fuel injection pump noise insulator, spreading the openings will reduce the risk of damage.

Install the fuel injection pump noise insulator.

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Install the intake manifold. Refer to: Intake Manifold .
Connect the battery. Refer to: BATTERY DISCONNECT AND CONNECT .