Vacuum Retard Unit
The vacuum for the retard unit is picked up at cylinder 1 and 4 intake manifolds, just below the throttle valves. The retard unit retards the ignition to 5° ATDC at idle.
The vacuum for the retard unit is picked up at cylinder 1 and 4 intake manifolds, just below the throttle valves. The retard unit retards the ignition to 5° ATDC at idle.