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.
Test 4 - Checking Load Sensor
- Connect adjustable timing light or TDC sensor system to engine. Set tester to 4-cylinder scale. Accelerate engine to 4000 RPM.
- Ignition timing should be 42° BTDC. Pull off vacuum hose on EZF ignition control unit. Ignition timing should be 20° BTDC.
- If ignition timing of 40° BTDC cannot be reached, build up approximately 7.25 in. Hg vacuum directly to control unit with a vacuum pump. If there's no change in ignition timing, replace EZF ignition control unit. If ignition timing changes, check vacuum line to intake air distributor for leaks.