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2n ignition problem

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rich in N. Minn

11-06-2000 07:41:31




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Hi Again;
2n still cuts out and stops after running fine for an hour. Put in 2 different coils. Dell, you suggested checking the ignition switch. I checked the voltage to top of coil after the tractor shut down and wouldn't start and it read 4.2 volts and 6 volts. Would I get these readings if the ignition switch was at fault. I know this is a temperature/time ignition problem but I cannot figure this out. spark is good to all plugs. New points and condensor. Any suggestions? the only thing I haven't done is replace the switch. Thanks

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Bob (KY)

11-06-2000 16:37:03




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 Re: 2n ignition problem in reply to rich in N. Minn, 11-06-2000 07:41:31  
Rich, I'm gettin' in here on the back end but do you have new plugs and wires? Just because the spark looks good don't mean much sometimes (been there done that). Also is it possible the wires are experienceing thermal breakdown and causing weak spark? Another thing, you said you checked voltage at the coil when it quit. Did you let it cool first? Probably need to check as soon as it quits while it's still hot.

Good Luck
Bob (KY)

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Charlie in TX

11-06-2000 13:06:02




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 Re: 2n ignition problem in reply to rich in N. Minn, 11-06-2000 07:41:31  
I sounds like your barking up the wrong tree. When it happens again, try one of the following. 1. Spray starter fluid in the intake. If that makes it fire up you have a fuel problem. Or
2. pull the spark plugs and do a compresion test.
I have a hunch it is fuel related.



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Dell (WA)

11-06-2000 09:15:34




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 Re: 2n ignition problem in reply to rich in N. Minn, 11-06-2000 07:41:31  
Rich..... ..hummmnnnn..... ya done the eazy stuff.....

4.2 volts indicates your ignition switch is "good". Also indicates your "ballast resistor" is good. 6 volts indicates your points open and close.....

Howsomever, new points have been known to "slip" their "gap". Something to recheck. You'd still get the voltage readings you quote.

Even new condensers have been known to be bad. They don't cost much and it takes specialized testers to check 'em out, its just eazier to replace 'em. If you still have your old condenser, try that.

4.2 volts is close to the max volts and it could be overheating your frontmount ignition coil. Even if you have replaced the coil, they can be marginal out of the box.

I agree it is a time/temp problem..... ...frustrating ain't it?..... ..Dell

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rich in n. minn

11-06-2000 09:53:20




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 Re: Re: 2n ignition problem in reply to Dell (WA), 11-06-2000 09:15:34  
Dell: Thanks for the response. This all began when I put in the &*%$ 8v battery. After that I put in the new points, condensor and coil. I do recall seeing that the points were not perfectly square with each other. I have had the distributor out so many times that I have gotten used to taking it off the front. I think I will start with putting in another new condesor, re checking the points again. I remember an earlier post from Claus where he was referring to the fiber washer on the terminal screw where the coil makes contact. I don"t think I remember seeing a washer there. Would that creat a time/temp problem?

thanks

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Claus

11-06-2000 10:11:00




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 Re: Re: Re: 2n ignition problem in reply to rich in n. minn, 11-06-2000 09:53:20  
If the insulator is grounded, then you would be seeing 0 volts there all the time and it would not run...
Happy Motoring
CLaus



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Claus

11-06-2000 13:02:17




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 Re: Re: Re: Re: 2n ignition problem in reply to Claus, 11-06-2000 10:11:00  
I just reread my response and it is a little confusing. How can an insulator be grounded. It should say that the threaded insert can ground to the tab that is inside the insulator and cause the points to short to ground regardless whether open.
Once this point is grounded, you would be seeing 3.5 volts or so at all times on top of the front mount coil and the engine would not run..
Happy Motoring
Claus

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DOUG

11-06-2000 11:56:56




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 Re: Re: Re: Re: 2n ignition problem in reply to Claus, 11-06-2000 10:11:00  
WOULD USING A jump box (12v) to jump start the tractor cause this problem.

Take a look a my posting from today "my 8n just died"



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Claus

11-06-2000 13:09:02




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 Re: Re: Re: Re: Re: 2n ignition problem in reply to DOUG, 11-06-2000 11:56:56  
If you have a 6 volt system then when you jump it with a 12 volt battery, it must be hooked up directly to the starter and not to the 6 volt battery.. This is dangerous...
Happy Motoring
Claus



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Salmoneye

11-06-2000 14:32:07




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 Re: Re: Re: Re: Re: Re: 2n ignition problem in reply to Claus, 11-06-2000 13:09:02  
and there has to be enough juice left in the 6 volt to run the coil (ignition system).



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