The older electrolytic condensers were manufactured with wax impregnated paper and aluminum foil. These also had an internal spring to insure wire contact between the foil sheets and the wires. Eventuallly parts corrode or the wax deteriorates and the insulation breaks down or wire/foil contact fails.
Computer manufacturers had a rash of electrolytic capacitor failures around 2005-210. This type uses a liquid composition to wet the insulator between the foil plates. The cheap versions from some pacific rim countries had used an incomplete electrolyte formula (no hydrogen scavenger). These crap caps failed prematurely causing mother boards from a number of major manufacturers to quit. The caps would burst, swell, vent, or barf out a brown ichor. They have been replaced with solid electrolyte polymer capacitors with 10 times the service life of even the older correctly manufactured electrolytic caps.
Perhaps something similar has happened with the current condensers manufactured for older Kettering systems. The problem is that the market for decent ignition condensers has declined so low that no one has a reliable replacement type other than a very few companies.
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Today's Featured Article - Earthmaster Project Progress Just a little update on my Earthmaster......it's back from the dead! I pulled the head, and soaked the stuck valves with mystery oil overnight, re-installed the head, and bingo, the compression returned. But alas, my carb foiled me again, it would fire a second then flood out. After numerous dead ends for a replacement carb, I went to work fixing mine.I soldered new floats on the float arm, they came from an old motorcycle carb, replaced the packing on the throttle shaft with o-rings, cut new ga
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