5.0/5.7L Distributor Ignition 4A - 15
MEFI 4 - PCM
678815
RT0086
Setting Cam Retard
Important: Moving the distributor DOES NOT adjust
ignition timing. Ignition timing is completely computer
controlled. However, a parameter called “Cam Retard”
must be within specifi cations or driveability problems will
exist.
1. Connect laptop, using Diacom (PCM p/n RT0086) in
order to read serial data.
2. Start the engine.
3. Look at the “Cam Retard” parameter.
1
2
6. Install the distributor cap.
7. Install the distributor cap bolts (1).
Tighten
Tighten the distributor cap bolts to 2.4 N
.
m (21 lb in).
8. Connect the camshaft position (CMP) sensor harness
connector to the CMP sensor (2).
Notice: Cam Retard MUST be set to 43-47 degrees.
4. If the Cam Retard is not within specifi cation, loosen
the distributor hold down bolt.
5. Rotate distributor until specifi cation can be achieved.
Tighten
Tighten the distributor hold down bolt to 25 N
.
m (18
lb ft).
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