Engine Mount - Rear

This procedure covers the removal and replacement of the rear engine mount on a 2015 Kia Forte with the 1.8L I4 engine, requiring engine support and access from underneath the vehicle.

Warnings

Tools required

Parts

• Rear engine mount assembly × 1 — Use OEM specification

Preparation

1. Park vehicle on level surface and engage parking brake
2. Place wheel chocks behind rear wheels
3. Allow engine to cool completely if recently operated
4. Raise front of vehicle with floor jack and secure on jack stands
5. Remove engine splash shield if equipped to access mount from below

Procedure

1. 1

   Support the engine
   Install an engine support bar across the engine bay, securing it to the strut towers or fender mounts. Alternatively, position a floor jack with a wood block under the oil pan to support the engine weight. Raise the jack or support bar slightly to take tension off the rear mount, but do not lift the vehicle off the jack stands.
2. 2

   Locate the rear engine mount
   From underneath the vehicle, identify the rear engine mount positioned between the engine block/transmission and the subframe. The mount consists of an upper bracket bolted to the engine/transmission and a lower bracket bolted to the subframe, connected by the mount insulator.
3. 3

   Remove mount-to-frame bolts
   Remove the bolts securing the lower mount bracket to the subframe/crossmember. There are typically 2-4 bolts depending on mount design. Support the mount assembly as you remove the final bolt to prevent it from falling.
   Torque spec

   Engine Mount-to-Frame Bolts58 Nm (43 lb-ft)
4. 4

   Remove mount through bolt
   Locate and remove the large through bolt that passes through the center of the mount insulator, connecting the upper and lower mount brackets. This bolt may require penetrating oil if corroded. Note the orientation of any washers or spacers for reinstallation.
5. 5

   Remove engine mount-to-block bolts
   Remove the bolts securing the upper mount bracket to the engine block or transmission case. Access may be limited and require extensions or universal joints. You may need to adjust the engine support height slightly for better access.
   Torque spec

   Engine Mount-to-Block Bolts65 Nm (48 lb-ft)
6. 6

   Remove the old mount assembly
   Once all fasteners are removed, carefully maneuver the rear mount assembly out from between the engine and subframe. Inspect the mounting locations on both the engine and subframe for damage, cracks, or excessive corrosion. Clean mounting surfaces with a wire brush if needed.
7. 7

   Install new mount to engine block
   Position the upper bracket of the new rear mount assembly to the engine block or transmission case. Thread in the mounting bolts by hand to ensure proper alignment. Do not fully tighten yet. Verify the mount is oriented correctly by comparing to the old mount.
8. 8

   Install mount through bolt
   Align the lower mount bracket and insert the mount through bolt, ensuring any spacers or washers are in their correct positions. Thread the bolt by hand initially, then snug it but do not torque yet.
9. 9

   Secure mount to subframe
   Align the lower mount bracket to the subframe mounting holes. Install the mount-to-frame bolts and thread them by hand. Ensure the mount sits flush against the subframe before proceeding.
10. 10

    Adjust engine position and torque fasteners
    Use the engine support to adjust the engine height until the mount is in a neutral, unstressed position with all bolts aligned properly. Torque the engine mount-to-block bolts to 65.0 Nm (48 lb-ft). Then torque the mount through bolt to 84.0 Nm (62 lb-ft). Finally, torque the mount-to-frame bolts to 58.0 Nm (43 lb-ft). Follow this sequence to ensure proper mount alignment and load distribution.
    Torque spec

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

    Engine Mount-to-Frame Bolts58 Nm (43 lb-ft)
11. 11

    Remove engine support
    Carefully remove the engine support bar or lower the floor jack from under the oil pan, allowing the engine weight to settle onto the new mount. Verify that the engine sits level and the mount is not binding or twisted.

Reassembly

1. Reinstall engine splash shield if removed
2. Lower vehicle from jack stands
3. Remove wheel chocks

Verification

• Start the engine and verify no excessive vibration through the cabin
• With engine running, shift through all transmission positions (P-R-N-D) and verify smooth operation without harsh clunking
• Visually inspect the mount for proper alignment and no contact with surrounding components
• Test drive the vehicle and verify no abnormal vibrations during acceleration or deceleration
• Recheck all mount bolt torque after initial test drive

Related trouble codes on this vehicle

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