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 Valve

Disconnect and plug intake air sensor hose to deceleration valve. Start engine and accelerate throttle to 3000 RPM. With finger placed over hose connection on deceleration valve opening, release throttle quickly. When throttle is released, no vacuum should be felt. If vacuum is detected on deceleration, replace valve.