B350 1 Ton Van V8-5.9L VIN Z (1992)
Ignition Rotor: Testing and Inspection
Distributor Rotor Inspection
INSPECTION
Replace the rotor if it is cracked or if the spring terminal does not have proper tension.
A black silicone varnish covers the tip of the rotor electrode. The coating is used to suppress electromagnetic radiation. The coating will darken
with age and have an ash like appearance. The ash formation is normal and will not affect engine performance.
