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Restoration & Repair Tips Board

Re: Condenser

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John T

08-17-2012 19:11:21

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To REALLY test it for capacitance and leakage you need an actual capacitor tester. An old fashioned analog ohm meter can tell you if its bad (like its shorted out) but even if it passes, that dont mean its good under actual operating conditions. To steady state DC it should read an open circuit (once charged) and if it reads a short its BAD and will kill the spark.

Yes different vehicles can use different values of condensors and its best to get the right one. It can still spark, albeit weak, if theres no condensor at all and the points would burn up sooner, but again if its a dead short theres no spark.

John T

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08-17-2012 19:27:09

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 Re: Condenser in reply to John T, 08-17-2012 19:11:21  
Thanks, John, for the additional direction. Yes, it does have spark; but weak which makes me suspicious of it. My v/o meter is digital, but I'll do what I can.

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John T

08-17-2012 19:42:50

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 Re: Condenser in reply to Unruh, 08-17-2012 19:27:09  
With my oldddddddddddd Simpson 260 VOM I can set her to the R X 10,000 scale,,,,,,,,discharge the condensor,,,,,,,then attach the meter and watch the needle start to swing over to low ohms (as condensor draws current to charge up) but then KICKBACK back over to high infinty ohms once shes charged up. If the needle dont initially start over to low ohms shes not drawing current and charging and then if it dont kickback towards infinity she may be shorted or leaking........

If you dont have a capacitor tester its time for a substitution test (if you can find the right one with correct capacitance etc) n see if that helps

John T

John T

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