Bertwav

Please can anyone help me locate a new throttle cable for a MK3 capri 2.0 S automatic 1983. All the ones listed are too long. I've tried a normal 2.0 as listed by the usual suppliers but it is 1065mm long and the inner cable is about 5 cms too short compared to the outer cable. The square fitting at the carb end is also too large for the square hole. The one coming off the car is 860mm long. If anyone can help I'd be very grateful. Cheers Rob