8n not running right. intermittent issue

[Soundguy]

i much prefer the red tigers though..

 

[rsallen]

Oops ya lost me there Soundguy. Red tigers? Another Ford generation of the 8n?

Hey, da ya happen to know how that engine knock worked out?

 

[LD1]

Oops ya lost me there Soundguy. Red tigers? Another Ford generation of the 8n?

Hey, da ya happen to know how that engine knock worked out?

red tigers are 600/800 series engines

 

[Soundguy]

Oops ya lost me there Soundguy. Red tigers? Another Ford generation of the 8n?

Hey, da ya happen to know how that engine knock worked out?

red tigers were fords upgrade ohv engine replacing the poorly breathing flat head on the N series.

4 cyl jobs in 134 172 and 192 gas or lp on some. 144 or 172 diesel.

 

[LD1]

just talked to him. It is definataly electrical. Put the timing light on it and when it craps out, timing light drops out for a few seconds and goes haywire.

So now on to playing with a jumper wire and jumpering ignition switch and terminal block, etc and see where the issue is.

 

[LD1]

Well, it is sounding like an ignition switch. Just talked to him again, he said the terminal block isnt used. When we re-wired it after the rebuild, the hot wire coming off the key switch is going to the same post on that terminal block as the coil wire. So basically were are just using a stud on that block for a connector.

And he did say that at one point, while doing a wiggle test of wiring, when playing with the key switch that the issue started again. But wasnt sure if that caused it, or coincidence.

If it aint the ignition switch, it has to be a connection at the distributor or something. But he said he wiggled the crap out of the wire at the distributor and couldnt get it to act up. And everything there is clean and tight. So my money is on the ignition switch. Some bad contacts in there or something cause to my knowledge the switch hasnt been replaced in the 20+ years he has owned it.

Worst part is, the carb has been apart and cleaned umpteen times and a rebuild kit the last time:mur:

 

[Soundguy]

clean carb now.

I always say to check spark first as it is the easiest.. and your hands don't smell like gas afterwards.

 

[David Wayne]

"update" its not the switch. LD has been posting for me. I jumped the wires together & let it run while replacing the switch & it acted up.
Now I will look deeper into the distributor. The wiring harness was replaced when we rebuild the tractor but at this point I wont rule anything out. Guess I will
run a separate wire straight from the battery to the coil.

 

[Cbrown9064]

"update" its not the switch. LD has been posting for me. I jumped the wires together & let it run while replacing the switch & it acted up.
Now I will look deeper into the distributor. The wiring harness was replaced when we rebuild the tractor but at this point I wont rule anything out. Guess I will
run a separate wire straight from the battery to the coil.

Yes, jumper right from battery to coil. That will eliminate most of the tractor wiring. Also check wire from coil to distributor. Check the little copper strip from inside dizzy to points...

 

[Soundguy]

i agree. just jumping switch wires only tells you about 10% of the ckt. I'd run a hot right to coil primary. that gives you 90% of the picture.