Why is my 12v coil getting hot?
The answer is simply, that due to an internal fault, such as a short circuit, the current through the primary coil will have increased, consequently the heat generated will have increased. Referring to a standard 12-volt coil has a resistance of 3.5 ohms and when connected to a 12-volt battery 3.42 amps flow.
Why does the ignition coil get hot when the engine is left on?
Something fishy here ! Coil will get hot if the engine is left with the ignition ON and the points closed – it’s passing current !! Check the points gap, and when did it last have a new condenser ?
Can a 6 volt ignition coil be hot?
A 6-volt coil gets just as hot as a 12 volt. I have been involved with antique Harley Davidson motorcycles for years and they use a 6-volt, wasted spark system (1 coil, 1 lead for each cylinder). The inside of the coil is full of stiff tar and the plug wires cannot be removed when the coil is cold.
What should I do if my ignition coil is cold?
The inside of the coil is full of stiff tar and the plug wires cannot be removed when the coil is cold. The recommended procedure is to turn on the ignition and allow the coil to heat for about 5 minutes or so.
Can a bad condenser cause an ignition coil to quit?
Yes it can! A faulty condensor can too. Absolutely they can, although they are more likely to misfire a bit first. A bad condenser can also cause similar issues. A likely reason relates to the fact that copper’s resistance increases about 0.4% per degree Celsius.
Something fishy here ! Coil will get hot if the engine is left with the ignition ON and the points closed – it’s passing current !! Check the points gap, and when did it last have a new condenser ?
The inside of the coil is full of stiff tar and the plug wires cannot be removed when the coil is cold. The recommended procedure is to turn on the ignition and allow the coil to heat for about 5 minutes or so.
A 6-volt coil gets just as hot as a 12 volt. I have been involved with antique Harley Davidson motorcycles for years and they use a 6-volt, wasted spark system (1 coil, 1 lead for each cylinder). The inside of the coil is full of stiff tar and the plug wires cannot be removed when the coil is cold.
Can a good ignition switch be out to lunch?
It does look like the ignition switch is out to lunch. This (continuous power to the ignition coil) could stillhappen with a good ignition switch in the ON position, IF the distributor points happened to be closed. So, that’s something to be aware of, even after repairing the ignition switch.