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12 Volt Issues

M

Metalviz

New User
I have just finished installing a twelve volt conversion and apparently I've had a brain fart or a blond moment or both. Getting zero spark at plug. Also only reading 6 volts at the coil with ignition on. I purchased the kit from this YT. I installed as instructions stated.
Yes, a new 12v coil was installed. As well as new plugs, wires, points, cap, rotor and condenser. I used the "wiring kit" that was included.
Motor will spin fine and I have rechecked wiring. I'm no rocket scientist, but usually pretty darn good with motors.
Any suggestions, other than firing my mechanic......... Thanks for the help.
1951 8N Side Mount Distributor
 
Sounds like a short to ground in the
distributor. Measure the voltage with the
points open and closed. Hint: look carefully
with your meter around the copper strip and
insulator.
75 Tips
 

Well, if it was wired correctly you SHOULD read only 6V with the Ignition ON...

Depending on the "Kit" you installed...there could be a Circuit that by-passes 12V to the ignition while the Starter is spinning...or not..??

I would check the Dist for power past the Points and check for Spark.. 6 V will start one IF it is a GOOD strong 6V...

What are you using to test for "Spark"..?? If all fails, just Hold onto the Plug wire and crank it over... if ya JUMP Real High, the spark may be OK..!

Always check for Fouled Plugs..

Ron.
 
If you installed a 12 volt coil, you do not need the dropping resistor that came with the kit from YT.
 
As I said, I installed the kit according to the directions from YT. So the resistor is in the circuit and was very warm to the touch. I have rechecked all the connections and I am suspicious of the "primary conductor" in the distributor. I checked the spark the old fashion way, with screw driver and nothing at plug wire. Considering eliminating the points type distributor for an electronic system. I don't mind doing periodic maintenance, but at some point I must decide whether to keep points and mechanical distributor. No more weights, points,condensor,and such.
I am sure I will here plenty about that from the tried and true folks. Thanks for the advice!!
 
(quoted from post at 16:54:42 09/04/16) As I said, I installed the kit according to the directions from YT. So the resistor is in the circuit and was very warm to the touch. I have rechecked all the connections and I am suspicious of the "primary conductor" in the distributor. I checked the spark the old fashion way, with screw driver and nothing at plug wire. Considering eliminating the points type distributor for an electronic system. I don't mind doing periodic maintenance, but at some point I must decide whether to keep points and mechanical distributor. No more weights, points,condensor,and such.
I am sure I will here plenty about that from the tried and true folks. Thanks for the advice!!
Click to expand...

Do you have one or two resistors installed? With a twelve volt coil, you should only have the original resistor.

Whatever you do, don't install an electronic ignition until you have the points system working. Adding more variables will not help.
 
Get it running on points before you consider EI. Now, you have a tractor that won't run on points. You could easily end up with a tractor that won't run on EI either.

And EI will not replace the advance weights.

As far as the resistor goes, no matter what the instructions say, if you have a 12v coil, REMOVE the resistor. Otherwise you will have a weak spark.
75 Tips
 
(quoted from post at 15:54:42 09/04/16) As I said, I installed the kit according to the directions from YT. So the resistor is in the circuit and was very warm to the touch. I have rechecked all the connections and I am suspicious of the "primary conductor" in the distributor. I checked the spark the old fashion way, with screw driver and nothing at plug wire. Considering eliminating the points type distributor for an electronic system. I don't mind doing periodic maintenance, but at some point I must decide whether to keep points and mechanical distributor. No more weights, points,condensor,and such.
I am sure I will here plenty about that from the tried and true folks. Thanks for the advice!!
Click to expand...

Reread the instructions. A side mount distributor with a 12 volt coil does not need the inline resistor. It is to be used if you are using the original 6 volt coil. A side mount distributor does not have the OEM ballast resistor.
 

I have only on resistor in. Its a simple one wire alternator system. I installed the resistor as described in instructions, between the coils positive post to resistor and starter relay post facing motor to resistor. Maybe I should have taken some pics of the install. Negative post on 12V coil to distributor.
Maybe this will help.
 
Thanks you Geiger. The instructions don't mention anything in regards to a 12V or 6V in installation. I will reread when my blood pressure gets back to a normal number. For such a simple system, it certainly is a finicky one.
 
(quoted from post at 13:00:27 09/05/16) Thanks you Geiger. The instructions don't mention anything in regards to a 12V or 6V in installation. I will reread when my blood pressure gets back to a normal number. For such a simple system, it certainly is a finicky one.
Click to expand...
Ya, if your coil is wanting 12 volts and you are providing 6, it will get finicky. I probably threw my instructions out when I installed mine, will look tho. Really thought it talks about the resistor and which coil you are using.
 
"...and starter relay post facing motor to resistor. " Well that certainly need expansion. If anyone knows what is meant here, feel free to enlighten me. :?:
 
almost sounds like he has the 3 post wire block of a front mount...

But my cerial box decoder ring can't figure out what he is trying to say.
 
Starter Solenoid has two terminals. One post to battery/starter and second post from positive post on ignition to starter relay post that faces the engine. This is the circuit that the resistor is in. Maybe I need more coffee. Didn't mean to confuse the bunch.
 
(quoted from post at 08:14:41 09/07/16) Starter Solenoid has two terminals. One post to battery/starter and second post from positive post on ignition to starter relay post that faces the engine. This is the circuit that the resistor is in. Maybe I need more coffee. Didn't mean to confuse the bunch.
Click to expand...

Second is positive post from ignition coil to starter relay.
 
(quoted from post at 11:17:36 09/07/16)
(quoted from post at 08:14:41 09/07/16) Starter Solenoid has two terminals. One post to battery/starter and second post from positive post on ignition to starter relay post that faces the engine. This is the circuit that the resistor is in. Maybe I need more coffee. Didn't mean to confuse the bunch.
Click to expand...

Second is positive post from ignition coil to starter relay.
Click to expand...
t isn't getting clearer. Please post a picture of that very, very rare "solenoid that has only two terminals". Gotta see it.
 
(quoted from post at 13:31:17 09/07/16)
(quoted from post at 11:17:36 09/07/16)
(quoted from post at 08:14:41 09/07/16) Starter Solenoid has two terminals. One post to battery/starter and second post from positive post on ignition to starter relay post that faces the engine. This is the circuit that the resistor is in. Maybe I need more coffee. Didn't mean to confuse the bunch.
Click to expand...

Second is positive post from ignition coil to starter relay.
Click to expand...
t isn't getting clearer. Please post a picture of that very, very rare "solenoid that has only two terminals". Gotta see it.
Click to expand...
Okay, so maybe I meant starter RELAY. Harsh crowd. lol
 
(quoted from post at 18:51:51 09/07/16)
(quoted from post at 13:31:17 09/07/16)
(quoted from post at 11:17:36 09/07/16)
(quoted from post at 08:14:41 09/07/16) Starter Solenoid has two terminals. One post to battery/starter and second post from positive post on ignition to starter relay post that faces the engine. This is the circuit that the resistor is in. Maybe I need more coffee. Didn't mean to confuse the bunch.
Click to expand...

Second is positive post from ignition coil to starter relay.
Click to expand...
t isn't getting clearer. Please post a picture of that very, very rare "solenoid that has only two terminals". Gotta see it.
Click to expand...
Okay, so maybe I meant starter RELAY. Harsh crowd. lol
Click to expand...
o starter relay with only 2 terminals either. Sorry.
Now that I think about it, I don't think you ever told us what tractor you have??? So, now we get to play the guessing game.................not an 8N, but maybe a 9N or 2N, or maybe JD or Oliver, or IH, or? If 9N Or 2n THEN YOU SHOULD HAVE A START SWITCH AND NO RELAY OR SOLENOID.
 
(quoted from post at 20:14:35 09/07/16)
(quoted from post at 18:51:51 09/07/16)
(quoted from post at 13:31:17 09/07/16)
(quoted from post at 11:17:36 09/07/16)
(quoted from post at 08:14:41 09/07/16) Starter Solenoid has two terminals. One post to battery/starter and second post from positive post on ignition to starter relay post that faces the engine. This is the circuit that the resistor is in. Maybe I need more coffee. Didn't mean to confuse the bunch.
Click to expand...

Second is positive post from ignition coil to starter relay.
Click to expand...
t isn't getting clearer. Please post a picture of that very, very rare "solenoid that has only two terminals". Gotta see it.
Click to expand...
Okay, so maybe I meant starter RELAY. Harsh crowd. lol
Click to expand...
o starter relay with only 2 terminals either. Sorry.
Now that I think about it, I don't think you ever told us what tractor you have??? So, now we get to play the guessing game.................not an 8N, but maybe a 9N or 2N, or maybe JD or Oliver, or IH, or? If 9N Or 2n THEN YOU SHOULD HAVE A START SWITCH AND NO RELAY OR SOLENOID.
Click to expand...

OK, never mind, you did say 1951 side mount 8N. So that still leaves me with what the devil are you calling 2 terminal start relay or solenoid???
 
"1951 8N Side Mount Distributor"

So your tractor didn't come with the OEM ballast resistor.
No need to worry about that.

"I installed the resistor as described in instructions, between the coils positive post to resistor and starter relay post facing motor"

This doesn't sound right to me. The resistor, if you have a 6V
coil, should be between the coil's positive post and the side of
the little terminal block switched by the key switch.

Not to the solenoid in any way. Certainly not to the little post
that is grounded when you push the starter button. It would
never fire. Could run the battery dead though.

If you have a 12V round can coil you don't need a resistor.
That coil should be marked "no external resistor required" or similar.

If you are having trouble posting pictures email them to me
and I will post them for you. The guys here love to help but
it is hard to do when we can't see what you are seeing.

RoyseTractors at gmail.com
 
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