Just got my 72 BB back mfrom the shop after a year and it looks great but runs like POO. To rule out the simple things I added a fresh tank of gas, air filter, plugs, cap, Wires have less than 100 miles and finally points and condenser. Upon removal of the points I noticed that they were quite used up. I decided to check the voltage to the coil to be sure that was not the cause. My findings were strange, so here they are:
All voltage measurements taken at the + side of the coil.
1. Ignition on, engine not running- 5.8v
2. Engine running- 12.6v
3. Cranking the engine (coil wire removed to prevent start-up) 8.9v.
4. With the wire that supplies battery voltage to the coil during starting removed, no change
Also, there does not appear to be any extra or missing wires on the coil, on the + side of the coil there is the wire from the ignition switch and wire from the starter. On the - side there is only the wirethat leads to the points in the distributor.
I have 2 questions- Is the resistor wire known to fail in a way that provides an increase in voltage when current is being drawn during engine operatoion? And.. Any other ideas???
By the way, I'm new to the forum...hello to all and have a happy Thanksgiving!
All voltage measurements taken at the + side of the coil.
1. Ignition on, engine not running- 5.8v
2. Engine running- 12.6v
3. Cranking the engine (coil wire removed to prevent start-up) 8.9v.
4. With the wire that supplies battery voltage to the coil during starting removed, no change
Also, there does not appear to be any extra or missing wires on the coil, on the + side of the coil there is the wire from the ignition switch and wire from the starter. On the - side there is only the wirethat leads to the points in the distributor.
I have 2 questions- Is the resistor wire known to fail in a way that provides an increase in voltage when current is being drawn during engine operatoion? And.. Any other ideas???
By the way, I'm new to the forum...hello to all and have a happy Thanksgiving!
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