How to Replace Engine Mounts: Complete Step-by-Step Guide
Learn how to replace worn engine mounts with this comprehensive guide. Includes tools needed, safety tips, and professional installation techniques.
Tools Needed
- •Floor jack and jack stands
- •Socket set (metric and SAE)
- •Torque wrench
- •Engine support bar or hoist
- •Penetrating oil
- •Safety glasses and gloves
Engine mounts are critical components that secure your engine to the vehicle frame while absorbing vibrations. Over time, these mounts deteriorate and need replacement. This guide walks you through the complete replacement process, helping you restore smooth engine operation and eliminate excessive vibration.
Before You Begin: Safety First
Replacing engine mounts requires supporting the engine's weight, so safety is paramount. Always work on a level surface, use proper jack stands (never just a jack), and ensure the vehicle cannot roll. Disconnect the battery's negative terminal before starting work.
Step 1: Locate and Inspect All Mounts
Most vehicles have 3-4 engine mounts. Locate each mount and inspect for cracks, separation, or fluid leaks. Document which mounts need replacement. Consider replacing all mounts if one has failed, as others are likely near failure.
- 1Raise vehicle and secure on jack stands
- 2Locate all engine mount positions
- 3Inspect each mount for damage or deterioration
- 4Take photos for reference during reassembly
Step 2: Support the Engine
The engine must be supported before removing any mounts. Use an engine support bar from above or a transmission jack from below. Support the weight carefully to avoid damaging components.
- 1Position engine support bar or jack
- 2Slowly raise until engine weight is transferred
- 3Verify stability before proceeding
- 4Ensure no strain on hoses or wiring
Step 3: Remove the Old Mount
With the engine supported, remove the fasteners securing the mount. Most mounts have bolts attaching to both the engine and frame. Apply penetrating oil to rusted bolts and let sit for 10-15 minutes before removal.
- 1Spray penetrating oil on mount bolts
- 2Remove frame-side bolts first
- 3Remove engine-side bolts
- 4Extract old mount from vehicle
Step 4: Install the New Mount
Install the new mount in reverse order of removal. Ensure proper alignment before tightening bolts. Hand-tighten all bolts first, then torque to manufacturer specifications.
- 1Position new mount in place
- 2Hand-thread all bolts
- 3Align mount properly
- 4Torque bolts to spec (typically 35-50 ft-lbs)
- 5Double-check all fasteners
Step 5: Lower Engine and Test
Carefully remove the engine support and lower the engine onto the new mount. Start the vehicle and check for proper operation.
- 1Slowly lower engine support
- 2Remove support equipment
- 3Reconnect battery
- 4Start engine and check for vibration
- 5Test drive and monitor for improvements
Conclusion
Replacing engine mounts is a manageable DIY project that can dramatically improve your vehicle's refinement. With proper tools and careful attention to safety, most home mechanics can complete this repair in 2-3 hours. Always use OE-quality replacement mounts like those from Westar to ensure long-lasting performance and proper fitment.