If your vehicle has 50-60,000 miles or more or the motor mounts have
been soaked with oil over a period of time, chances are they have grown
weak and are need of replacement. Worse yet, if you experience a thud
upon acceleration or deceleration, check for signs of fan scallop on
your radiator core or fan shroud.
Use a pry bar to check the
mounts for movement. A fan scallop or excess movement of the mount would
be the telltale sign of a broken motor mount. This can be a dangerous
condition as the engine can shift, causing the accelerator to stick in a
full throttle position.
Our reproduction motor mounts are an inexpensive cure for this potentially dangerous condition. Camaro applications: Firebird applications: