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.

Dual EGR Valve

This valve consists of primary and secondary valves which are controlled by carburetor vacuum. Carburetor vacuum is governed by throttle openings. The primary valve controls EGR flow at small throttle openings. The secondary valve controls EGR flow at large throttle openings.