ydderf
New Member
eight words to fear "I'm from the government I'm here to help"
Posts: 7
|
8N
Apr 26, 2019 17:03:55 GMT
Post by ydderf on Apr 26, 2019 17:03:55 GMT
My 8N has sat for 4 years not being used yesterday when I put a new battery in it had no spark. I checked the points cleaned the rotor still no spark ( by the way I converted to 12V starter. how do I check the coil and the solenoid?
|
|
|
Post by blackfeather on Apr 27, 2019 19:14:24 GMT
I suppose a multi meter to check continuity of the coils could be tried. A timing light on the wires in and out of the distributor cap and see if it fires while cranking. Using a volt meter to check if voltage is getting into the coil in the first place on the small screw terminals. Isn't the solenoid for the starter? if the starter turns over then the solenoid should work, it is just a relay, since they can't run high amperage through the key switch. if you still have problems run a hot wire from the battery to the coil, this will see if there is a wiring problem somewhere between the battery, the switch and the coil.
|
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Apr 28, 2019 14:13:16 GMT
(from Nick:)
Check the resistance. There should be 1-3 ohms resistance on the primary (input side) of the coil, some as low as 0.7, some as high as 5-10 ohms, but generally lower. There should be 15-20k ohms resistance between the secondary (output, high voltage side) of the coil and the negative input post. It's not common for the secondary side of the coil to go out, it's pretty heavy duty.
Some 'can style' coils need a ballast resistor, these can go bad. Also, running a can coil at a full 12v without a resistor can make them overheat, which will cause the primary winding to burn out.
|
|
|
Post by blackfeather on Apr 28, 2019 21:13:22 GMT
When you converted to 12 volt, did you also convert the generator, the coil and any capacitors? You mentioned starter, but the generator would still put out 6 volts if it were not converted as well. The original coil is built for 6 volts, you would need the resistor mentioned above or a 12 volt coil. Probably capacitors would be okay but check their voltage requirements anyway to be sure. Not sure about the spark plugs and wires I think they would probably be all right.
|
|
ydderf
New Member
eight words to fear "I'm from the government I'm here to help"
Posts: 7
|
8N
Apr 29, 2019 14:54:55 GMT
Post by ydderf on Apr 29, 2019 14:54:55 GMT
Yes I changed to an 12v alternator and coil and lights .
|
|
|
Post by joebill on Apr 29, 2019 15:42:11 GMT
If I were a betting man I would bet on the points. I know you checked them, but did you clean them? They can look dandy and still not function. Clean the mating surfaces with sandpaper or a nail file, then run a dollar bill through them when they are in the closed position so the spring tension will hold them against the dollar.
If you changed over to 12v and did not include a resistor for running, not cranking, this will often fry the points, even though they look good from the side.
If it ran before you parked it, no spark now, look for wires chewed in two by rats and squirrels. Not likely anything burned out while sitting there with the key off.
Check back with us if no luck, please.....Joe
|
|
|
8N
Apr 29, 2019 17:21:32 GMT
joebill likes this
Post by Ozarks Tom on Apr 29, 2019 17:21:32 GMT
Now that joebill , mentions it, the position of the ignition switch would be a likely place for mice to have a plastic lunch, hidden up under the cowl. My 8n sits in the machine shed, and ever since mice ate the ignition wires on my Bronco close by, and my trailer lights, I'm just waiting for those little varmints to chow down on my tractor wiring. If that's it, you'd get what you're describing, the starter working off the starter button, but no juice to the coil.
|
|
|
Post by joebill on May 5, 2019 1:48:03 GMT
Anybody in the Mozarks get those Texas ants that fill up electrical boxes? We do not get them here every year, but when we do they are a plague.
Count on them finding a way to get inside the well pressure switch and commit hari cari by throwing their tiny little bodies between the contact points, thus denying you water.
What it is that attracts thousands of ants to get into electric systems with active current in them is beyond me. Unplug a circuit, no more ants. Yeah, go ahead and try to tell me that science can explain anything and everything....I will not even pretend to believe you...….Joe
|
|
|
Post by Jolly on May 5, 2019 12:37:31 GMT
Not answering the question, but a really nice 8N in the video...
|
|
|
Post by joebill on May 11, 2019 2:14:49 GMT
First thing I ever drove that had more than one cylinder.....Joe
|
|