641 wont start

[crawlernut]

Im new here so I may do this wrong.
I replaced the points with solid state ignition yr before last.
I was very happy with the results so much so that I even installed one in my 172.
Tractor ran much smother and could even idle it down lower then I could with the points.
Fast forward to today, tractor wont start and is not putting out any spark.
I changed coil out and even swapped the pertronix from the 172 with I know runs, nothing! cant get a spark at all.
I'm not good at trouble shooting electrical.
Any help would be welcomed.
Thanks in advance!

 

[RobCons]

Check for voltage at the coil. If none keep going back down the line until you find it then make neccesary repairs.

 

[crawlernut]

don't have meter to check voltage at coil.
I disconnected the hot wire from coil and ran jumper wire to hot side of battery, I can here the current inside of the cap at the EI but it still is not sending fire to the plugs.

 

[Jim L WA]

I don't know your situation, but if you can afford two solid state kits you can afford a little multi meter sold at most any hardware store. It doesn't have to be an expensive one, just something that reads A.C., D.C. volts and resistance and even milliamps which you probably don't need around a tractor.
What do you mean you can hear the current inside the cap? Is it arcing inside there? That might be a clue to your trouble.

 

[showcrop]

What do you mean by this: "I can here the current inside of the cap"??

 

[David G]

Get a meter, much cheaper than buying unneeded parts.

 

[crawlernut]

It was kind of like static, but only for a split second.
As it turns out it was the rotor button, runs fine now.

 

[crawlernut]

Was actually going to pick up a meter today, honestly I've never needed one in the past.

 

[Sean in PA]

(quoted from post at 06:45:07 03/24/20) Was actually going to pick up a meter today, honestly I've never needed one in the past.

I knew an electrician years ago that had a meter somewhere but he never used it. When working on 110 or 220 volts he would lick the tip of his thumb and pinky finger on the same hand and touch them to the two points where he wanted to see it if was hot. He never even flinched on 110, but his hand would jerk back on 220. I guess that's how he knew the difference.

 

[drokid]

I have a 641 have EE for it not installed but have read you need to make the dust cap
a little bigger

 

[crawlernut]

I didn't have to do any modification on the dust cap, it should basically drop in there.
Like I said in an earlier post that im very happy I throw the points away, tractor runs much much better.

 

[crawlernut]

I didn't have to do any modification on the dust cap, it should basically drop in there.
Like I said in an earlier post that im very happy I throw the points away, tractor runs much much better.

 

[jpw461]

Did u check ballast resistor. are you 12 volt or 6 volt