Re: Electromatic Clutch Issues

Posted by HH56 On 2015/9/1 22:10:12

Unless the engine is already running very lean the small amount of air normally admitted when you turn the EC on should not kill or affect the engine for more than a moment. It only admits the amount of air that is present in the power cylinder behind the diaphragm as the diaphragm pulls in to release the clutch.

Once the diaphragm is pulled in and the clutch is released, assuming the throttle is not touched and the car is not moving, no more than a tiny amount of air should be able to reach the engine -- far less than the windshield wipers -- unless there is a leak from a loose tube connection or crack in the power diaphragm that is continually admitting air. Once the throttle moves so the clutch starts to engage the valving blocks the vacuum supply and it is more a controlled bleeding off or admitting of outside air to that trapped vacuum contained in the power cylinder, not the use of more vacuum. The engine won't need to supply more vacuum until the clutch needs to release again.

Does the clutch feel like the EC cable is adjusted and unit is completing and maintaining a full release? If EC is functioning and cable is adjusted properly, then assuming the proper 1 1/2" of free play is present in the clutch linkage the EC will pull the clutch in until pedal is almost to the floor. You can check by pressing on the pedal. It will be down almost to the floor or if it is one that stays up, it will require very light pressure until the pedal is 1/2 inch from the floor. The remaining 1/2" distance in either case requires normal pedal pressure to touch the floor