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.

Preliminary Checks

Before assuming that the ECU is faulty, the following systems and components must be in good condition and operating properly:

Air filter.
All support systems and wiring.
Battery connections and specific gravity.
Compression pressure.
Electrical and vacuum connections to components, sensors and switches.
Emission control devices.
Ignition system.
All vacuum and fuel line (hose) connections.