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8n wont start

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ramsfan

12-10-2007 11:09:00




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I have a 19528n just changed over to 12volt system,front mount distributor.After makeing the switch over the tractor ran fine,tried to start the other day and just turns over,I have fresh gas and have changed plugs,wires,distcap,points you name it its new,the carb is filling with fuel and flooding out yes the carb is new to.Any ideas or help would be great this thing has become the money pit.....

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Bob - MI

12-10-2007 12:54:55




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 Re: 8n wont start in reply to ramsfan, 12-10-2007 11:09:00  
If you are getting spark then it must be fuel. I agree that you can't lose compression overnight. I would swap the plugs out for new, turn the engine over with the plugs out and the fuel shut off to clear it. With new plugs in and fuel back on try and start without the choke.

Post back with results.



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Bruce (VA)

12-10-2007 12:38:22




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 Re: 8n wont start in reply to ramsfan, 12-10-2007 11:09:00  
A 1952 N did not have a front distributor. It had a side distributor. You might have an older model engine in a 1952 w/ a front distributor, but it is not a 1952 engine w/ a front distributor.

If you have spark & fuel, the only thing left is compression. I doubt you lost compression over night, so I'm thinking you have a spark or fuel problem.

Start by changing out the now "gassed" plugs. Next, when you go to start it, keep your hand off of the choke.

Next, get an old plug, open the gap to 3/16, ground it to a rust & paint free spot on the head, turn the key on & crank the engine. You have three possibilities: no spark, weak and/or intermittent yellow spark, or a bright blue spark. What is it? Next, check for fuel. Remove the bolt in the bottom of the carb; as long as the fuel is turned on, you should see gas flowing out of the carb.

Next, check for continuity inside the distributor. It is very easy to ground the wire to the condenser when you replace the points. Re-check the point gap at .015 on all four lobes, because points do slip.

Put the coil on the distributor w/ it off the engine. Check for continuity between the coil & the points w/ a meter. If you do not have continuity, stretch the pigtail on the coil a bit.

Post back w/ results; you will get plenty of help.

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Jack - Illinois

12-10-2007 12:15:07




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 Re: 8n wont start in reply to ramsfan, 12-10-2007 11:09:00  
What did you do to the coil in your 12 volt switch over?? If nothing, yep it would run fine until you melted the old 6 volt coil. Side mount is easy to check spark by removing coil wire from distribuator and holding it about 1/4" from head while turning motor over with starter. If you don't have spark there then dist cap, rotor, or plug wires won't help you one bit. Flooding carb - just turn the gas off and if you get spark in the right places it will run until the carb runs dry. You may have the plugs fouled from flooding too.

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John B. Ind.

12-10-2007 12:30:59




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 Re: 8n wont start in reply to Jack - Illinois, 12-10-2007 12:15:07  
Pull it to start. Just put it in 3rd gear and try it. Been there, done that and it worked fine after it started once. What have you got to lose? Did this on both the 8n and 600 in years past.



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ramsfan

12-10-2007 12:23:50




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 Re: 8n wont start in reply to Jack - Illinois, 12-10-2007 12:15:07  
it has the 12volt coil,and plenty of spark



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soundguy

12-11-2007 07:31:33




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 Re: 8n wont start in reply to ramsfan, 12-10-2007 12:23:50  
AFAIK.. there are NO true 12v square coils. That is, all the 12v square coil dmust run some extra serial resistance inline with them.

Soundguy



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