Cub down

[Dave Irish]

Hello, It has been a long time sice I have posted but I have not had any problems for a while. It looks like my time has come. Yesterday I was happily disking. Cub was running just fine. I found I needed to use the facilities. Shut her down, 15 minutes later came out won't start. Tried and tried. I wanted to just get her to the shed for the evening, still no luck.
This moring went out and cleaned the carb, checked spark on all four and compression seems good( just a finger test) still nothing. I am not even getting a hit. I guess I will check the points. Stating to baffle me.

Any suggestions

Thank you David Irish

[Bigdog]

Dave, start with the basics. Confirm that you have fuel and spark. Those are the most common sources of problems.

[Dave Irish]

Hello. I have gas and spark but decided to check points. Not bad but i am going to dress and re-gap right now. But I found hand cranking pulley to fing tdc it was much more difficult than it was I had to take out all four plugs normally if I take out #1 plug I can turn the pulley by hand. Sorry for getting back here before i did the points but I know it is alot easier to get relpies on a Sunday. And I have to go to my wife's cousins for dinner.

I'better get cleaned up soon

Thanks Dave

[John Lane]

About a week ago I parked my 78 cub in the shop to work on the steering. After I got it all back together it would not start, or even act like it wanted to. After checking everything else I could think of, I decided to replace the coil with a coil from another tractor, and it fired right up. I guess coils are like people--when they get tired they just quit.

[John *.?-!.* cub owner]

Wait until you et hold of one that the coil misfires or quits when it gets hot, then works again when it cools. will drive you nuts.

[Buzzard Wing]

YOu are right John. Nothing worse than an intermitten or heat related problem!

[Fordlords]

I remember one neat thing from my ASE training with battery/points ignitions for troubleshooting you don't hear often, and I still use this on old equipment sometimes. Works on magneto coils many times too, and on intermittent plug wires also:

Runs fine cool/cold, stops or runs rough warm, no warm restart:
Many times the condenser. Check spark, usually a yellow spark on plugs gives this away and the engine restarts when the condenser cools off. If condenser is OK, liberally spray WD40 or other penetrating lube over the outer casing of the coil. As coils are nearly impossible to instrument test in the field this almost always gives a bad coil away, engine will start and work fine until the WD40 evaporates. Old coil casings often develop fissure cracks in their casings that the WD seeps into and restores open windings momentarily.

There is nothing you can't fix with WD40, vice grips, duct tape and a beer if the previous 3 fail

-Fordlords-

['Country' Elliott]

Hey Dave...I believe that you'll find your problem to be EITHER the condensor, or coil.

If you didn't change the condensor when you installed NEW points...it's most likely your condensor. If you did put on a NEW condensor, and it's been running fine...it's probably your coil working intermitantly.

Let us know how you do!

[allenlook]

If you have another condensor handy, you may be able to just hook it up to the external NEG post on your coil and see if it helps without going to all the bother of tearing apart the distributor housing.

I'm not positive, but I believe my Cub has the old condensor still inside the distributor housing, and a replacement of sorts just pipe-clamped beside the coil on the outside.

[Bigdog]

Allen - if the condensor is breaking down, adding another one externally will not help. The condensor is connected across the points to reduce arcing as the points open. If you parallel one across the defective one, it will do no good unless the original was completely open which is extremely rare.

[Bus Driver]

Be sure that power is getting to the coil. That old ignition switch might have failed.

[AlanPCUBS]

somthing simple to check is make sure your roter didnt skip a few teeth. I have had that hapen before. Good luck!
Alan

[beaconlight]

I had the same thing happen twice through the years with a C. Both times it was the metal tip fell off the rotor.

bill

[jim turner]

Just always remember fire and fuel at the right time is what they taught me in mechanics 101

[Dave Irish]

hi guys thanks for your replies. Well I cleaned up the points and the rotor

And now I am getting great spark off the coil but nothing to the plugs. I tried two old dist. caps...still nothing So I guess it has to be the rotor and it is not cheap thats why it has not been replaced.....


Oh well Dave