I've just acquired a 1971 Clubman automatic in surprisingly original condition, 48,000 miles which looks genuine.
The car has been dry-stored for over two years and now there's no forward drive - reverse is fine, but in forward gears I can only detect the slightest attempt to drive the wheels in the 3 position, and then not enough to move the car. It was working when put into storage, so what can be wrong? The selector cable is moving fine. I've changed the oil & filter and warmed the engine up to full operating temperature. The only tell-tale sign is that the oil lamp flashes on and off as I most the selector through the gears, to reverse and back to forward. Someone hinted there may be a valve somewhere; any thoughts?