Toyota
Jeep Cherokee
 Service Manual
Ignition system » Diagnosis and testing
Distributor rotor-2.5L engine

Visually inspect the rotor (Fig. 10) for cracks, evidence of corrosion or the effects of arcing on the metal tip. Also check for evidence of mechanical interference with the cap. Some charring is normal on the end of the metal tip. The silicone-dielectricvarnish- compound applied to the rotor tip for radio interference noise suppression, will appear charred.

This is normal. Do not remove the charred compound.

Test the spring for insufficient tension.

Replace a rotor that displays any of these adverse conditions.

Fig. 9 Cap Inspection-Internal-Typical
Fig. 9 Cap Inspection-Internal-Typical

1 - CHARRED OR ERODED TERMINALS
2 - WORN OR DAMAGED ROTOR BUTTON
3 - CARBON PATH

Fig. 10 Rotor Inspection-Typical
Fig. 10 Rotor Inspection-Typical

1 - INSUFFICIENT SPRING TENSION
2 - CRACKS
3 - EVIDENCE OF PHYSICAL CONTACT WITH CAP
4 - ROTOR TIP CORRODED

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