How are engine mount issues diagnosed?
Diagnosing engine mounts is not necessary in all cases, as some vehicles are scheduled for motor mount replacement as part of the factory scheduled maintenance. For most other vehicles, the motor mounts will be evaluated for the amount of travel they allow the engine, if the engine is listing in one direction, whether they have physical damage or leaks, and if they produce vibration or noises in the cabin. If any obvious symptoms are present, the engine mounts will be identified if they are causing the symptoms. Some manufacturers publish specifications for positioning engine and transmission mounts, and failure to adhere to these specifications, or the engine mount gradually shifting out of position, will lead to engine vibrations felt in the cabin, and possible premature engine mount failure. If the technician notices the engine mount appears to be failing, but is installed incorrectly, they may recommend correcting the installation, and testing the existing mount.