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Professional Knowledge on Automobile Engine Mount Maintenance
 
- Inspection Methods:
- Visual Inspection: Check the rubber part for cracks, hardening, breakage, deformation, collapse or oil leakage. Also, check if the engine position is obviously sinking or shifting.
- Vibration Sensation: If the steering wheel, seat or body vibrates significantly during idling or driving—especially when the vibration intensifies when parked in Drive (D) and eases when shifted to Neutral (N)—the engine mount may be faulty.
- Abnormal Noise Listening: If a "creaking" sound or metal collision noise comes from the engine compartment, it may be due to damaged rubber pads causing direct contact between components.
- Factors Affecting Service Life:
- Material: Solid rubber engine mounts have poor cushioning effect, are prone to overheating and aging, thus shortening their service life.
- Installation: Deviation in installation position will cause uneven force; insufficient torque of fixing bolts will lead to gaps between the engine mount and connecting components, accelerating wear.
- Environment and Driving Habits: Long-term driving on bumpy roads, frequent sudden acceleration, sudden braking and long-term idling will all increase the load on the engine mount and accelerate its aging.
- Maintenance: Engine oil leakage, where oil comes into contact with the rubber part of the engine mount, will cause the rubber to swell and age faster.
- Methods to Extend Service Life:
- Choose engine mounts made of high-quality materials.
- Inspect the engine mount rubber for cracks and check if hydraulic oil leaks every 20,000 kilometers driven.
- Avoid sudden acceleration, sudden braking and reduce long-term idling.
- Pay attention to the parking environment; avoid long-term exposure of the engine mount to sunlight, high temperature or corrosive substances.
- Replacement Precautions:
- Before installation, confirm that vibration/noise is caused by a damaged engine mount and rule out other possible causes.
- It is usually recommended to replace them in pairs or as a complete set, especially when other mounts are also obviously aged.
- Thoroughly clean the contact surface of the engine mount installation base, removing oil stains, rust and old rubber residues.
- Use a torque wrench correctly and tighten the bolts according to the torque value recommended by the manufacturer.
- Conduct a detailed inspection and test after installation to ensure the engine runs smoothly without abnormal noise or vibration.