The Ford Barn

1929 · 07-23-2018, 11:46 AM

What are the symptoms of a 6 volt coil going bad?

Purdy Swoft · 07-23-2018, 02:04 PM

Usually when a coil starts going out, it will act up after it is warmed up and gets in the least bit of a strain. The engine will start breaking up and trying to go dead . If a person goes light on the throttle and gently builds momentum for the hills they may be able to make it home if they are not too far away . It is always best to use a solid or epoxy filled coil with the model A. If an oil filled coil is used it will need to be mounted with the wire connections pointed upward. When an oil filled coil is mounted with the connections at the bottom as model A coils were originally mounted, the internal windings won't be completely covered by the oil and will run hotter and burn out much quicker than an epoxy filled coil . The original model A coils were tar filled and are often called a solid coil , same goes for the epoxy filled coil . If you shake an oil filled coil you can feel or hear the oil sloshing inside the coil . If the correct coil is used and mounted correctly for the style of coil that is used , its not likely that you will ever experience coil failure . If you are running six volts you will need a coil rated at 1.5 OHM or use a resistor If running 12 volts a three OHM coil will be needed and no resister will need to be used . A failing condenser will have similar symptoms . The so called modern style or V8 condensers are usually the type that fail , especially if it is the cheap foreign made part . I have never had a problem with the original style short proof condenser that most model A parts vendors handle .

1929 · 07-23-2018, 03:33 PM

Quote:

Originally Posted by Purdy Swoft

Usually when a coil starts going out, it will act up after it is warmed up and gets in the least bit of a strain. The engine will start breaking up and trying to go dead . If a person goes light on the throttle and gently builds momentum for the hills they may be able to make it home if they are not too far away . It is always best to use a solid or epoxy filled coil with the model A. If an oil filled coil is used it will need to be mounted with the wire connections pointed upward. When an oil filled coil is mounted with the connections at the bottom as model A coils were originally mounted, the internal windings won't be completely covered by the oil and will run hotter and burn out much quicker than an epoxy filled coil . The original model A coils were tar filled and are often called a solid coil , same goes for the epoxy filled coil . If you shake an oil filled coil you can feel or hear the oil sloshing inside the coil . If the correct coil is used and mounted correctly for the style of coil that is used , its not likely that you will ever experience coil failure . If you are running six volts you will need a coil rated at 1.5 OHM or use a resistor If running 12 volts a three OHM coil will be needed and no resister will need to be used . A failing condenser will have similar symptoms . The so called modern style or V8 condensers are usually the type that fail , especially if it is the cheap foreign made part . I have never had a problem with the original style short proof condenser that most model A parts vendors handle .

Those are the exact symptoms, and it is upside down, thanks.

Chuck Sea/Tac · 07-23-2018, 11:03 PM

Quote:

Originally Posted by 1929

Those are the exact symptoms, and it is upside down, thanks.

But; is it oil or epoxy filled?

1929 · 07-24-2018, 05:53 AM

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Quote:

Originally Posted by Chuck Sea/Tac

But; is it oil or epoxy filled?

oil

07-23-2018, 11:46 AM	#1
1929 Senior Member Join Date: Jan 2015 Location: New York Posts: 943	Coil? What are the symptoms of a 6 volt coil going bad?

07-23-2018, 02:04 PM	#2
Purdy Swoft Senior Member Join Date: May 2010 Location: Alabama Posts: 8,099	Re: Coil? Usually when a coil starts going out, it will act up after it is warmed up and gets in the least bit of a strain. The engine will start breaking up and trying to go dead . If a person goes light on the throttle and gently builds momentum for the hills they may be able to make it home if they are not too far away . It is always best to use a solid or epoxy filled coil with the model A. If an oil filled coil is used it will need to be mounted with the wire connections pointed upward. When an oil filled coil is mounted with the connections at the bottom as model A coils were originally mounted, the internal windings won't be completely covered by the oil and will run hotter and burn out much quicker than an epoxy filled coil . The original model A coils were tar filled and are often called a solid coil , same goes for the epoxy filled coil . If you shake an oil filled coil you can feel or hear the oil sloshing inside the coil . If the correct coil is used and mounted correctly for the style of coil that is used , its not likely that you will ever experience coil failure . If you are running six volts you will need a coil rated at 1.5 OHM or use a resistor If running 12 volts a three OHM coil will be needed and no resister will need to be used . A failing condenser will have similar symptoms . The so called modern style or V8 condensers are usually the type that fail , especially if it is the cheap foreign made part . I have never had a problem with the original style short proof condenser that most model A parts vendors handle .