BMW Coupes and Sedans 1970-1988 Repair Guide

Engine Mounts


Because engine mounts are made of rubber and must withstand engine vibration and continuous bumping, it is a good idea to inspect them frequently.


See Figure 1

  1. Disconnect the negative battery cable.
  3. Raise and safely support the vehicle on jackstands.
  5. Loosen and remove the engine mount retainer nut securing the mount to the vehicle. If you are removing an engine mount which has a ground strap attached to it, remove the ground strap retainer nut and push the strap aside. Do not forget to install it later.
  7. Raise the engine with a floor jack and a piece of wood between the jack and engine. Raise the engine enough to slacken the engine mount. If your vehicle is equipped with an aluminum oil pan, you can raise the engine from under the oil pan.

Click image to see an enlarged view

Fig. Fig. 1: If equipped with an aluminum oil pan, the engine can be raised by the pan using a wood block and jack

Do not raise an engine from the oil pan if the engine is equipped with a steel oil pan. These oil pans cannot withstand the force needed to raise the engine and serious lower engine damage could result.

  1. With the engine raised, loosen the engine mount retainer bolts securing the mount to the engine.

To install:
  1. Position the engine mount and secure with retainer bolts.
  3. Lower the engine slowly making sure the engine mount seats correctly without any excessive rubber contorting. If the rubber binds, lift the engine and try again.
  5. Install the engine mount retainer nut and ground strap, if equipped.
  7. Lower the vehicle, and start and check for any excessive engine vibration. If there is vibration, the engine mount will have to be loosen and adjusted to eliminate the vibration.