960 COIL HELP

pinball · Jun 26, 2016

Went to fire up the 960 ford. Noticed gas leaking from shut off valve. new two years ago. piece of junk made by ford. Got it off and put new o-ring in it. still leaks. Tried to start it. It wont start. looks as fuel is okay. doesn't look as though getting any fire. Measured the voltage on the coil. Had 7.83 volts coming in but only .43 coming out. So does that mean the coil is bad or am I missing something else. all replies welcome. thanks norm

Andy Wickiser · Jun 26, 2016

Were the points closed when you took the measurement? If so those voltage readings could be normal. Are your points fused or otherwise not opening? Is the wire going from the coil to the distributor shorted to ground where it enters the distributor? Did you confirm that you have no spark by cranking while holding coil high voltage wire close to block and watching for spark?

old · Jun 26, 2016

6 volt or 12 volt system?? That said pull the distributor cap off and look to see if the points are open or closed. If open you should have battery voltage on both wires of the coil. If closed you should have almost no volts on both wires. But either way good way to check for spark is pull the center wire form the distributor cap and hold it about a 1/4 inch from the block. Spin it over and you should get a blue/white spark that will jump tha t1/4 inc gap. No spark or weak spark says points need cleaned or replace

pinball · Jun 26, 2016

12 volts system. I did check the points. moved them but didn't get any spark. with the rotor cap off I cranked it over but no spark on the points. thanks norm

Andy Wickiser · Jun 26, 2016

If distributor side of the coil remains at .43 volts regardless of if the points are open or closed I would check very carefully the insulator/brass conductor setup on the distributor to see if it is shorted to ground. You can do this with the ignition off and the ohms function on your meter. The connection on the side of the distributor should only be connected to ground then the points are close.

Andy Wickiser · Jun 26, 2016

Also you while you are measuring resistance you should probably check the primary coil resistance by disconnecting one of the two primary coil terminals and measuring resistance across the two terminals. It should be around 1.5 or 3 ohms depending on if it's a 6 Volt coil (used with ballast resistor on a 12 Volt system) or 12 Volt coil.

souNdguy · Jun 27, 2016

how did you get 7.xx volts 'comming in' to the coil, on a 12v system??

Are you using a 6v coil and have a resistor inline, and did the measurement with the points closed?

souNdguy · Jun 27, 2016

they almost had to be closed... and he must have a resistor.

I wish people would include what they have, and also learn how to use a VOM effectively..

960 COIL HELP

pinball

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Andy Wickiser

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old

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pinball

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Andy Wickiser

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Andy Wickiser

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souNdguy

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souNdguy

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