Toyota 1975, Contact breaker points pitted.

1975 TOYOTA COROLLA
860,000 MILES
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MARIOC68
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Cheers
The Contact breaker points of my 1975 toyota corolla are pitted. The point of the hammer has a hole portion and sets this material as a kind of bulge.

The change of platinum and new capacitor did not last long as the points are burning fast as me in a couple of weeks.

I hope you can help me.
Dec 25, 2015 at 12:04 PM
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WRENCHTECH
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Most breaker point systems are designed to start on 12v and run on 8v so if you have modified the wiring or ignition system in any way, it would burn the points. Some vehicles use a coil with a resister built in and some use a resister wire to feed the coil to lower voltage once started.
Dec 25, 2015 at 11:26 PM
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MARIOC68
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adding another capacitor?
I measure the resistance of the primary coil circuit? or secondary or both?
Dec 26, 2015 at 7:14 AM
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WRENCHTECH
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There's nothing you can measure. Most coils are marked either internal resister or external resister.
Dec 26, 2015 at 7:19 AM
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MARIOC68
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how to test if the coil is going well or not?
Dec 26, 2015 at 7:24 AM
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WRENCHTECH
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I don't have any specs on that. It's too old.
Dec 26, 2015 at 7:36 AM
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MARIOC68
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you can place some additional resistance coil externally?
Dec 26, 2015 at 7:40 AM
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WRENCHTECH
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You can buy ignition resisters at the parts store if they still carry them but remember it has to start on 12v and run on 8-9v so you have to have 2 different feed wires to the coil.
Dec 26, 2015 at 7:43 AM
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MARIOC68
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according to its manual primary winding resistance should be 4.7 ohm. However the multimeter reading gives me only 3 ohm.
Dec 30, 2015 at 5:11 PM
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MHPAUTOS
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From memory this ignition system should run a ballast resistor and the coil should have printed on the base "use with resistor,
Dec 30, 2015 at 9:05 PM
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JOHNNY G.JR
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? I have seen where a bad ground on distributer can burn points,true or false??
Jun 18, 2016 at 12:39 PM
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MHPAUTOS
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May just be a faulty condenser this will cause the points to arch
Jun 18, 2016 at 4:16 PM
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