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Ford 9N, 2N & 8N Discussion Forum
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GRRR... still no start...

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James Rader

06-09-2007 21:25:41




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1940 9N, completely new wiring, points, condensor, plugs and wires, new manifold...

Ok, last time I posted I stated I had a good blue spark on all four plugs. I checked the timing and fixed it as it was just a hair off. But then I found I had a leak around the carb base and between the manifold and block.

So today I put a little high temp pucky on the gasket between the block and manifold and it seems to have seeled real well. Went to try start and nothing.

Checked for fuel... good to go... check spark again... NO SPARK. I threw the old working condensor back in just for hopes... nothing... jumped around the weak sister key switch... nothing... so now I wonder if I burnt the coil?

I have searched on how to test the coil here and for the life of me can't find the threads... can someone spell it out for me? Any other ideas?

James the tractorless...

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James Rader

06-10-2007 17:16:51




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 I need a sparkie meister! Dell? Someone? in reply to James Rader, 06-09-2007 21:25:41  
Thanks for everyones help I did not get out to the tractor today but before I posted the above message I did try stretching the spring on the bottom of the coil, checked the points and didn't see any place for it grounding out (had that problem a couple years ago, learned a big lesson.

It is so simple, yet so very complicated when you fix one thing and then the opposite goes wrong too. I swear I had a brilliant blue spark on all four plugs, and I did not leave the key on, so I don't know why the coil would be burnt but who knows. I will check for the ammeter readings asap (at work now) ...

Thanks

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Phil (NJ,Az,Sask)

06-10-2007 11:18:55




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 Re: GRRR... still no start... in reply to James Rader, 06-09-2007 21:25:41  
third party image

To use this flow chart you need a working ammeter Each "tick" on the meter = 2 amps, mine reads high (Error) @ 2 ticks (4 amps) but is really 3 amps

You can use it on 12V conversions. Note the voltage measurements in upper left corner relate
only to the OEM Ballast (not additional Resistance), which would also be in the circuit of a 12V (2.5) ohm coil.

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Phil (NJ,AZ,Sask)

06-10-2007 11:34:52




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 Re: GRRR... still no start... in reply to Phil (NJ,Az,Sask), 06-10-2007 11:18:55  
If using it on 12V conversions the EXCITE terminal on the Alternator must be disconnected or your Ammeter will not read ZERO. Its important that the meter read ZERO when points are open

Phil,



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GB in MT.

06-10-2007 06:50:23




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 Re: GRRR... still no start... in reply to James Rader, 06-09-2007 21:25:41  

Hi James; I've been kinda watchin your posts on this delema. I'm no sparkie miester, like Dell, but you had good blue spark, then puckied up the manifold. Still no start. ckd. the points, and reset them.***** NOW, no spark!!!!
I would suggest pulling the coil off and stretch the little coil wire down, to ensure a good contact between the coil and distributor. Re-install the coil and chk. for GOOD BLUE spark at spark plugs. Also, try changing out the plugs. They may be fouling. I wish I knew more. Maybe Dell, will jump in today, and try to help ya.
Good luck with this thing. Probably something simple.
BTW: Make sure you have the spark plug wires in the right place!!!??? Firing order 1243 counterclock wise.


Gary

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Crutchfield

06-10-2007 04:49:19




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 Re: GRRR... still no start... in reply to James Rader, 06-09-2007 21:25:41  
James...sounds so much like me and my 40 9N.
Everything seems so bright and simple whe these things are running...but seems there are infinite combinations for problems. I swear these things are alive and play tricks.."heh, heh, he changed my wiring...I'll shut the coil down...and if he replaces that I'll make a cable go bad. This is so much fun"
I've had similar problem where it was the coil I must have burned out. Other times all it was was a battery cable or the battery suddenly died.
Last time was the starter switch...but also the main wire insde starter at post got twisted and separated.
Guys here seem to methodically go through and figure things out with a light tester....I'm like the blind squirrel rooting around for the hidden nut.
So...at least I feel your pain.
Crutch, the often tractorless, 40/9N

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Allthumbs

06-10-2007 05:51:28




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 Re: GRRR... still no start... in reply to Crutchfield, 06-10-2007 04:49:19  
Crutch, I could'nt agree more. It was like when we had mules and they knew when you were going to harness them. They would run to the other side of the pasture. My former N seemed to always quit in the middle of the creek bed with a thunderstorm on the way. Or it's points would go out and stop right over a fire ant mound. I have another N now and am doing my best to stay on it's good side. Regards

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A. Bohemian

06-10-2007 09:13:26




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 The Apple Don't Fall Far From the Tree in reply to Allthumbs, 06-10-2007 05:51:28  
This is exactly the kind of trick ol' Model T was famous for playing.

With the ignition on but before starting, you should see approximately three amps discharge. No discharge? There is an open somewhere in the circuit. Check the points first, as they are most likely to be problematic.

Three amps discharge as per normal? Crank the engine. You should see the ammeter flutter as the points open, stopping the current flow, and close, starting it again.

No flutter? The points are shorted to ground somehow (likely), or the system is shorted elsewhere (less likely but certainly possible).

Meter reading normally in all cases? In all probability the points, coil primary, and condensor are doing their job and the problem is likely to be elsewhere.

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dan hill

06-10-2007 17:12:27




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 Re: The Apple Don't Fall Far From the Tree in reply to A. Bohemian, 06-10-2007 09:13:26  
My dad showed me how to read the ammeter around 1950.I cant understand why so many tractor owners dont know this simple trouble shooting tip.



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