Condenser Testing

[Gerald C.]

I have a 63 roadster and want to replace the electrical condensers. I'd like to know how I go about testing the existing ones I have before buying any new ones.

Thanks,

Jerry

[Gary C.]

Re: Condenser Testing

Jerry, here's how I do it. Gary....
To test use an analog or digital volt ohm meter (VOM) set for ohms. First remove/disconnect the capacitor from the circuit. Second short the terminals with a screwdriver or capacitor lead to the case to be sure the capacitor is discharged. Check with the analog or digital VOM meter with red (+) VOM test lead to the capacitor lead wire and the black (-) negative test lead to the capacitor metal case. VOM should read open as capacitors have infinite resistance (they block and don't conduct). Then reverse the VOM leads to the capacitor contacts; black to capacitor lead, red to capacitor metal case, the needle should jump (capacitor kick) and return to infinite resistance if the cap is good.

[Gerald C.]

Re: Condenser Testing

Gary,

Is there any way to bench test these on a stand alone basis?

Jerry

[Gary C.]

Re: Condenser Testing

Jerry, that is a bench test. Otherwise you'd need a capacitor tester, which most of us don't have. Gary....

[Gerald C.]

Re: Condenser Testing

Gary,

Thanks for the info. I'll see if an electrical shop around here has this equipment for the testing.

Jerry

[Mike B.]

Re: Condenser Testing

If you are near a Harbor Freight, go and buy the tester for $3 - $5. Or you can buy it at Sears or Home Depot for around $20.

A Volt-Ohm tester is an indespensible and fundamental tool for basic troubleshooting. Once you learn even the basic functions you will wonder how you did without it.