Engine Mount - Front

This procedure covers the removal and replacement of the front engine mount on a 2011-2014 Ford F-150 with the 3.5L EcoBoost V6 engine, requiring support of the engine from below during the operation.

Warnings

Tools required

Parts

• Front engine mount assembly × 1 — Use OEM specification

Preparation

1. Park vehicle on level ground and engage parking brake
2. Disconnect negative battery terminal to prevent electrical shorts
3. Allow engine to cool completely for at least 2 hours after operation
4. Raise front of vehicle and support securely on jack stands positioned on frame rails
5. Remove engine splash shield/skid plate if equipped to access mount area

Procedure

1. 1

   Position engine support jack
   Place a floor jack with a wide wood block (at least 12 inches square) under the engine oil pan. Raise jack until it just contacts the pan but does not lift the engine. This will support the engine when the mount is removed.
2. 2

   Apply penetrating oil
   Spray all mount bolts (mount-to-frame and mount-to-engine block) with penetrating oil. Allow 10-15 minutes to soak. This is especially important on vehicles in rust-prone areas.
3. 3

   Remove mount through bolt
   Locate and remove the through-bolt that passes horizontally through the center of the mount assembly. This large bolt connects the upper and lower portions of the mount. You may need to raise or lower the engine slightly with the support jack to relieve tension and allow bolt removal.
4. 4

   Remove engine mount-to-block bolts
   Remove the bolts securing the upper portion of the mount to the engine block. There are typically 3-4 bolts. Support the mount with one hand as you remove the final bolt to prevent it from falling.
   Torque spec

   Engine Mount-to-Block Bolts65 Nm (48 lb-ft)
5. 5

   Remove engine mount-to-frame bolts
   Remove the bolts securing the lower mount bracket to the frame rail. These bolts typically access from below. The entire mount assembly can now be removed from the vehicle.
   Torque spec

   Engine Mount-to-Frame Bolts75 Nm (55 lb-ft)
6. 6

   Clean mounting surfaces
   Use a wire brush to clean the mounting surfaces on both the engine block and frame rail. Remove any rust, debris, or old thread locker. Inspect threads in the engine block for damage.
7. 7

   Install new mount to frame
   Position the new front mount assembly with the lower bracket aligned to the frame rail mounting holes. Install the mount-to-frame bolts hand-tight. Do not fully torque at this time to allow for alignment adjustment.
8. 8

   Align and install mount to engine block
   Carefully raise the support jack to lift the engine and align the upper portion of the mount with the engine block mounting holes. Install the engine mount-to-block bolts hand-tight. You may need to use a pry bar to fine-tune alignment.
9. 9

   Install mount through bolt
   Insert the through-bolt through the center of the mount assembly. This bolt connects the engine-side and frame-side portions of the mount. Install hand-tight initially.
10. 10

    Torque mount-to-frame bolts
    Using a calibrated torque wrench, torque the mount-to-frame bolts to specification in a cross-pattern sequence to ensure even seating.
    Torque spec

    Engine Mount-to-Frame Bolts75 Nm (55 lb-ft)
11. 11

    Torque mount-to-block bolts
    Torque the engine mount-to-block bolts to specification in a cross-pattern sequence. Ensure all bolts are fully seated before final torque application.
    Torque spec

    Engine Mount-to-Block Bolts65 Nm (48 lb-ft)
12. 12

    Torque mount through bolt
    Torque the mount through-bolt to final specification. This is the primary load-bearing fastener for the mount assembly.
13. 13

    Remove engine support and lower vehicle
    Carefully lower and remove the floor jack from under the engine oil pan. The engine weight should now be fully supported by the new mount. Reinstall engine splash shield if equipped. Lower vehicle from jack stands.

Reassembly

1. Reconnect negative battery terminal
2. Verify all tools and parts have been removed from engine bay
3. Double-check that all mount bolts have been torqued to specification

Verification

• Start engine and allow to idle. Listen for unusual noises or vibrations that would indicate improper mount installation
• With engine running, have an assistant shift transmission through all gear positions while observing mount for excessive movement
• Perform a test drive and monitor for excessive engine movement during acceleration and deceleration
• Re-inspect all mount bolts after initial test drive to confirm none have loosened

Related trouble codes on this vehicle

Codes that commonly send this job to the bay — tap one for symptoms, causes, and diagnostic steps.

Chasing one of these codes and not sure which part is guilty? Ask a master mechanic about YOUR car →

More procedures for this vehicle