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.
Checking for Signal
- Warm up engine to normal operating temperature. Connect a tachometer to engine. Disconnect the vacuum sensing tube (from leading vacuum advance diaphragm to pipe) at pipe. Place a finger over pipe opening and make sure air is not sucked into pipe. See Fig 1
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- Gradually increase engine speed and make sure air is sucked into pipe when engine speed is 1000-1200 RPM or more. Decrease the engine speed from 4000 RPM rapidly and make sure air is not sucked into pipe while decelerating. Turn A/C switch on and make sure air is sucked into pipe at idling speed.