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

The following should be checked prior to trouble shooting fuel system:

Ensure Service Engine Soon light is operable.
Check that no trouble codes are stored.
ECM grounds are clean and tight.
Check for faulty vacuum hoses.
Check for vacuum leaks at throttle body and intake manifold.
Check ignition system for faulty components.
Inspect wiring connections and condition.