For a seasoned DIYer, replacing an engine mount is often a manageable job, but for most beginners it’s not a quick or simple repair. Expect a few hours in the garage, and possibly longer on newer cars with complex mounts or tight spaces. Safety and proper engine support are essential to avoid damage or injury.
Engine mounts keep the engine securely in place and dampen vibration. Replacing one involves safely supporting the engine, removing obstructing components, unbolting the mount from the engine and chassis, installing the new mount, and torquing bolts to specification. The difficulty depends on the vehicle’s design, the mount type (hydraulic, torque-strut, or solid), and how accessible the mount is. Some cars require removing exhaust, subframe components, or other nearby parts, which adds time and complexity.
Factors that influence difficulty
The following factors influence how hard the job will be on your specific car.
- Vehicle design and mount type (hydraulic vs. solid, torque-strut, top vs. bottom mount) and the exact mounting location.
- Accessibility and space around the mount, including clearance from exhaust, intake, wiring, and subframes.
- Need for engine/transmission support tools (engine support bar or transmission jack) to prevent movement or droop during removal.
- Required tools and torque specs, plus whether special landing gear, adapters, or aftermarket mounts are needed.
- Potential for additional repairs (damaged brackets, bolts, or surrounding components) detected during the job.
Understanding these factors helps you decide whether to tackle the repair yourself or hire a shop.
What you’ll typically do to replace an engine mount
The following sequence covers a typical replacement, but always consult your vehicle’s service manual for model-specific steps and torque values.
- Disconnect the negative battery cable and set the vehicle in a secure work area; chock the wheels.
- Raise the car safely and support the engine with a suitable jack and a wood block or a dedicated engine-support tool.
- Remove any components that obstruct access to the mount (air intake, plastic covers, shields, or exhaust components if required).
- Unbolt the mount from the engine side and the chassis/transmission side; note the orientation and hardware for install.
- Carefully remove the old mount; inspect the mounting surface and brackets for damage or wear.
- Clean mounting surfaces and prepare any brackets or fasteners as needed; replace any worn hardware.
- Install the new mount in the same orientation as the old one; hand-tighten bolts first to avoid cross-threading.
- Torque bolts to specification in the proper sequence, ensuring a secure and even seating of the mount.
- Reinstall any components you removed, reconnect the battery, and lower the engine slowly, checking clearances along the way.
- Test the engine start and idle, then perform a cautious road test to verify there’s no abnormal vibration or movement; re-torque if required per manual recommendations.
Because model variations exist, some cars require additional steps or have unique mounting arrangements. Always prioritize safety and consult your official service literature.
Professional help and safety considerations
While many older or less complex vehicles can be serviced at home by a confident DIYer, certain setups—especially hydraulic mounts or tightly packed engines—benefit from professional care. If you encounter limited access, unfamiliar mounting configurations, or you notice cracked brackets, warped surfaces, or mounting oil leaks, professional service is advised.
When to consider professional help
Consider a shop if the mount is deeply embedded behind other components, if the job requires significant disassembly or cutting, if you lack appropriate engine-support tools, or if you’re unsure about torque sequences and alignment. A pro can ensure proper installation and prevent engine misalignment that could cause drivetrain or vibration issues.
Safety reminders
Engine mounting work involves lifting heavy components and working under a vehicle. Adhere to these safety basics:
- Always disconnect the battery and support the engine with a proper stand or jack and wood block during removal and installation.
- Use wheel chocks, jack stands, and a stable work surface; never rely on a hydraulic jack alone to support the engine.
- Wear eye protection and gloves; keep hands clear of pinch points and hot components.
Following these precautions reduces the risk of injury and damage to the engine or vehicle.
Summary
Replacing an engine mount is not universally easy. It ranges from straightforward for experienced DIYers on simple layouts to challenging for modern, tightly packaged engines with hydraulic mounts. Plan for the appropriate time, assemble the right tools, and consult the vehicle-specific manual. If in doubt, especially with complex mounts or limited space, hiring a professional is a prudent and often cost-effective choice to ensure the job is done safely and correctly.