Initial Ignition Timing; Magnetic Timing Probe - Jeep 1979 CJ-5 Technical & Service Manual

Table of Contents

GENERAL SERVICE AND DIAGNOSIS 1A-17

B U R N E D OR

ERODED T E R M I N A L S

C A R B O N PATH

Distributor Cap inspection

any of these conditions. When replacing the cap, move

one ignition wire at a time to the replacement cap. If

necessary, refer to Distributor Wiring Sequence in Spec-

ifications. Make sure each wire is installed in the tower

corresponding to the tower from which it was removed.

Push the wires firmly into place.

Replace the cap if the inserts inside the cap are exces-

sively burned. The vertical face of the insert will show

some evidence of burning through normal operation.

Check the inserts for evidence of mechanical inter-

ference with the rotor tip.

Initial Ignition Timing

A graduated degree scale located on the timing case

cover is used for timing the ignition system. A milled

notch on the vibration damper is used to reference the

No. 1 firing position of the crankshaft with the timing

marks on the scale as shown in figures 1A-6 and 1A-7.

Magnetic Timing Probe

A socket is cast into the timing case cover for use with

a special magnetic timing probe which senses the milled

notch on the vibration damper. The probe is inserted

through the socket until it touches the vibration damper

and is automatically spaced away from the damper by

Fig. 1 A - 6 Timing Mark Location—Six-Cylinder Engine

Troubleshooting