Cap and Rotor Change Interval?

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At every tune-up visually check the distributor cap and rotor for damage, burns or corrosion. Check the spark plug towers and their terminals under the cap to be sure they are free of corrosion that would inhibit proper spark distribution. Replace any damaged or worn components. One often overlooked part of the distributor cap inspection are the terminals on the underside. Small burn spots or deposits of corrosion here can lead to engine misfiring.
Inspect the rotor for cracks, excessive burning of the contacts and mechanical damage, and replace as necessary........
 
The Toyota electronic ignition cap and rotor seems to last a long time. I replace mine every 10 years or 100K miles with stock Toyota parts, but have not had a failure. The stock cap has a hose that runs from the A/C blower box, through the firewall to heat or cool the distributor pickup components and relieve condensation. There is a flexible foam cover that fits around the cap and wires to protect them from water or mud. I do run "Jacob's" 8.5mm blue wires I installed about 20 years ago.
I do replace the plugs with Toyota stock plugs every few years. Each time, I use a silicon grease spread with a screwdriver inside the boots prior to reinstalling. This allows for easy removal the next time I replace the plugs. Plugs are torqued to 20 Ft Lbs with the threads lightly coated with "Never-Seeze" graphite grease.
 
Zack1978 said:
WOW I guess I waste cash, I usually replace the cap and rotor every year with OEM Toyota parts.

Zack
Click to expand...

Send me your "used" ones.
 
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