You can use a simple ohm meter to see if a coil is BAD buttttttttttt it will not tell you if its GOOD. Theres typically say 1.25 to 3.5 ohms (depedns if a 6 or 12 volt coil) in a coils LV primary between its lil + and - terminals and maybe 5,000 to under 10,000 ohms in its HV Secondary. If either is open (no continuity) the coil is baddddddddddddd but even if it passes both those checks, it can still fail once its warmed up especially a HV breakdown failure which youre not gonna see with that LV ohm meter test.
Likewise an ohm meter will show if a condensor is baddddddd but it cant tell you how good it is or its MFD rating or if its leaky, it takes a real capacitor tester to do that. Using a DC ohm meter it should show an open circuit once its charged but if its a short its baddddddddd. If you have an old analog ohm meter like my Simpson 260 a kickback/charge test can tell a bit more about how well and if shes charging up or not.
Good way to test a coil is wire it up and allow curent to flow then interrupt the current (simulates points closed then opened) flow n see if theres a spark by using a coil wire out the top tower to ground.
My Ignition troubleshooting shows other coil checks
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Today's Featured Article - The Cletrac General GG and the BF Avery A - A Bit of History - by Mike Ballash. This article is a summary of what I have gathered up from various sources on the Gletrac General GG and the B. F. Avery model A tractors. I am quite sure that most of it is accurate. The General GG was made by the Cleveland Tractor Company (Cletrac) of Cleveland, Ohio. Originally the company was called the Cleveland Motor Plow Company which began in 1912, then the Cleveland Tractor Company (1917) and finally Cletrac.
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