[RRRacing1970]

The speed and references sensors are a 50/50 deal if bad... just go to the fire wall look under the ("Monkey") - (Bundle of wires and go down surfing in the center just off to the driver side on the back of the eng. block under the hot water valve! More than likely u will find the no spark prob. at the coil or the conectors (2) for ref. & speed in their (clip's) (plastic dry-rotted out and broken wires) that are mounted (bolted down just behind the intake manifold). Try Pelicans TShooting Forum thay got some examples and great color photos, if that doesn't help go to Porsche 944NA or 951 Turbo TSing Forum above!
Ron...