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.

HEI System Tests

For HEI diagnosis, see Fig 1 and Fig 2 .

Fig 1: Intermittent Operation Or Miss Flow Chart

Courtesy of GENERAL MOTORS CORP.

Fig 2: Engine Cranks, But Will Not Start (With Integral Ignition Coil) Flow Chart

Courtesy of GENERAL MOTORS CORP.