Putting my motor together and getting ready for initial start up. filled the radiator, and stuck my finger in the filler hole to see if the water/antifreze was at the top and got electrocuted! i was in my garage, cement floors, no shoes on (rubber soles). i have 2 batteries in my trunk that i have on a battery tender. the starter wire is not hooked up. unplugged the battery tender and the current in the antifreze went away... how is this possible?
Check the outlet, likely a ground fault. Could be bad neutral connection, bad or no ground, or load, ground and/or neutrals reversed. Simple, low cost tester. If you don't have a meter. https://www.homedepot.com/p/Power-G...w4dljHU2xxeE8lrTdf-JfTAsKsQR58VKwFwAhU39Ypau8
Years ago I had my HEI distributor would arc on the upper rad hose, you’d hear a buzz and see the arc
You should test for voltage in the rad. It can cause more damage than you would think. pumps,bearings, rings,and the rad itself. Put a volt meter on it. Ground the neg probe to the neg bat post. Dip the pos probe into the coolant without touching the rad. Do the test with the engine running, the lights and heater fan on. When changing coolant, use distlled water.
1. Electrolysis does not come and go depending on whether the battery charger is plugged-in or not. This is a battery charger/house wiring problem. 2. Coolant electrolysis does not create enough voltage to shock a guy. OTOH, as a general test when a cooling system is unusually rusty, sure, electrolysis can be a factor. Either the coolant is worn-out/depleted of the anti-corrosion additives; or there's a grounding problem with the engine. Your tests are valid in general, but not for these particular symptoms.
was your battery charger humming louder than normal? If the diodes in your charger go bad they simply don't charge I would think. I would try to repeat the shock because unless you have a Tesla coil by your car this seems odd. I actually think that I have experienced a static tingle from a car but not from dipping my finger into a radiator.
