October 30: LEMON manuals on a temporary server, it is slow and having issues, download the manuals you need! Later in November we will switch back to the fast server.

Deceleration Spark Advance System

When engine speed sensor detects 1600-2000 RPM (1400-1800 RPM on 2600 cc engines), it activates solenoid valve movement. This changes intake manifold vacuum to carburetor ported vacuum, maintaining smooth vehicle operation.