Ford 641 lost spark in distributor

I recently put new material points in and now lost current in distributor.
Also coil now has power only coming in but not going to distributor. But when I remove coil wire from distributor I then have power on both sides of coil.
If I touch coil wire to distributor contact it sparks, but no power is sent to points.
Bad ground? Or contact in points?
Any ideas what could cause this?
The connection s all seem good.
 

It's not uncommon for even new points to develop an insulating film on the contact surfaces.

First thing I would do is clean the points by drawing card stock or a clean business card through the points.

If that doesn't work, fold in half a small section of 400 grit wet or dry sandpaper or Flex Stone File to clean the contacts.

Verify point gap and see what happens.
 
When you put in the new points, somewhere you got something in the distributor connected to ground. Look it over carefully to see where the grounded wire or spring is.
 
I agree, you have a ground someplace. Check that the wire coming into the distributor has not grounded as it passes through the opening, and other places where the wire connects to the generator. The wire is supposed to be insulated all of the way to the points, and make sure that you did connected the wire to the points correctly.
 

2X what robilmichael said. That connection where the wire comes through the wall of the distributor is a often troublesome. inspect it carefully, even better replace it.
 
Thanks to all who responded.
I’ve replaced points numerous times and never had this outcome.

This tractor is currently outside and irritating to keep your fingers nimble enough to try without knowing what is wrong.

I will investigate and report on what I find.
 
points are somehow closed or shorted. ( including the rare possibility that condensor is shorting the points.. or the metalic
strip or feedthru at the side of the distribuitor ).
 
What you describe is definitely a common problem. The film keeps the points from making contact to open and close the ignition circuit.

However his description indicates the opposite problem, the points are constantly shorted, not constantly open. (In electrical terms "short" means there is current flowing where it should not, "open" means there is no current flow where there should be.) The points can be closed but the circuit still be "open".

He will need to resolve the short-circuit problem first.
 
Here is quick update.
I just pulled the contact bolt and copper connection where power run into the distributor from the coil. Cleaned inspected and reinstalled.
Symptoms continue as before.
I am suspicious that the paper type washer that keeps the supply lead from contacting the distributor may be faulty. It is intact and not broke or torn but very thin.
 
Quit jumping around and take it one step at a time.

You have power to both sides of the coil with the distributor wire taken off.
Now connect distributor wire to coil but disconnect from points. Check for power at wire end.
Now connect wire to points with points open and condenser disconnected. Check for power at wire end at points.
Now connect condenser. Check for power at wire end at points.

Now at what point did you lose power.
You should be able to narrow down the problem with these simple test.

Once you have this right close the points and you should lose power to the wire showing the point contacts are good and the points have a good ground.
If you do not lose power to the wire with the points closed you need to check the contacts and the mechanical advance plate for ground deep in the distributor.

Simple process of elimination part by part.
 
(quoted from post at 16:39:23 11/06/17) Here is quick update.
I just pulled the contact bolt and copper connection where power run into the distributor from the coil. Cleaned inspected and reinstalled.
Symptoms continue as before.
I am suspicious that the paper type washer that keeps the supply lead from contacting the distributor may be faulty. It is intact and not broke or torn but very thin.

There you have it ty!!, yes, the strip is good, but your concern is not the strip, it is the insulating washer on both inside and outside.
 
John.
Thanks for your specific response.
Your simple process of elimination is basic concept to fix many things.
I’ll look forward to applying it soon.

Simple simple. Basic. Concept.

I have learned many things by asking a question and being willing to listen.
Thanks
 

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