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8N is killin me!

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8NRookie

08-27-2004 19:15:03

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Help before I shoot this thing! Bought an 8N this spring. Ran O.K. at first but had the usual 8N stalling problem, which got worse with time. Seemed to be rust in the tank so I had it coated,and put a new sediment unit on the tank.Also blew out the gas line with high pressure air.Now I have nice clean gas and a good flow. Also put on new plugs,points,and condenser along with a new coil 2 days ago.She fired right up and ran real nice after the tune up...then I took her out to plow tonite.Ran for maybe 10-15 minutes...enough for one and a half rows. Started running rough, quit, and now wont even start at all. What do you think? I think I read somewhere that the ignition switch could be a problem.Distributor cap? Rotor? Plug wires? Help a rookie out! THANKS

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Jeff-oh

08-28-2004 07:55:50

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Re: 8N is killin me! in reply to 8NRookie, 08-27-2004 19:15:03

Did you clean the filter screen in the carborator at the carborator elbow?

I had a 1/2 plug of plant fibers blocking my fuel flow there last weekend.

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( Pic ) Ken N Tx

08-29-2004 02:56:49

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3 Filters in reply to Jeff-oh, 08-28-2004 07:55:50

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Spudds

08-29-2004 19:58:39

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Re: 3 Filters in reply to ( Pic ) Ken N Tx, 08-29-2004 02:56:49

Ken,
I really like your contribution to the forum. I"m not having fuel/filter problems, but if I were, your pictures would really be a big help. It would be great to see more pictures that deal with solutions to problems. You know what they say "one picture is worth a thousand words".

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Jeff-oh

08-28-2004 07:55:40

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Re: 8N is killin me! in reply to 8NRookie, 08-27-2004 19:15:03

Did you clean the filter screen in the carborator at the carborator elbow?

I had a 1/2 plug of plant fibers blocking my fuel flow there last weekend.

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ZANE

08-28-2004 05:48:09

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Re: 8N is killin me! in reply to 8NRookie, 08-27-2004 19:15:03

You should first determine if it is fuel or ignition problems that are preventing starting. Spray a good dose of starting fluid into the intake of the air cleaner or the carburetor. Be careful of starting a fire if the intake hose is off the carburetor. I don�t recommend trying this with the intake hose off. If it will start on the ether/starting fluid it is not the ignition so it must be the fuel system or something else like a stuck intake valve etc. Which is rare.
Check the ignition switch first to make sure it is making up. The 8N switch is notorious for going on the blink. One way to check it out is to take a straight pin and push it through both wires that go to the switch and then see if it will fire. If it will start then you will know it is the switch and you can replace it. When you have determined that the switch is delivering juice to the ignition the next thing to check is the resistor just above the ignition switch. If it is open it will not run. Don't try to bypass it if you determine it is bad but go and get a new one.
I repeat, don't bypass the resistor! You will toast everything in the ignition system if you do. You can check the points for making contact by placing a volt meter at the coil where the hot wire connects and then turn the engine over by hand with the fan or by rocking the tractor in forth gear and observing if the voltage fluctuates between battery voltage and about 3 volts. When the points close the voltage will drop if the points are making good contact. If the voltage won�t change then look at the distributor and points. If the voltage remains low it is a sign that there is something shorted in the distributor.
There is a little card board looking insulator where the wire goes into the distributor. Sometimes this insulator will deterioiate and short out causing the ignition not to work. You can run a wire straight through the hole in the distributor to the points and then dab a little silicone glue in the hole with the wire to keep out dust and it will word just as good or better than the insulator and stud thing where it goes into the distributor.
If you have got sparks all the way to the points and still not any fire to the plugs you need to replace the points and condenser and then the coil if all else fails.

Feb. 4, 2001
You really need to get those bushings replaced or a new distributor plate. Also is the centrifugal advance is bent you are probably running with the ignition very late.(after top dead center compression stroke) Should fire a few degrees before TDC. It is possible to advance the ignition by loosening the screw on the left side of the distributor that holds the distributor plate secure and push the screw up all the way to begine with and then re start and see how it sounds. If the engine wants to try to kick back it is too early on the ignition and you will have to move the timing screw back down just a tad and try it again. If the ignition points are fabricated from plastic that may be the reason you can't get them adjusted anymore. If the adjustment was this way when first installed they may be OK but if you have gone back in and found them closed up all the way as if by a grimlin then they may have changed shape from overheating one of those times when you couldn't get it started and let the ignition sit while on and the engine not running and melted that plastic in the points.
If you can find them you should only buy the points that are fabricated from "bakelite" material. Looks sorta like cardboard material. This was what was in the distributor originally and it will not melt when it gets hot the next time you forget to turn the ignition off. You could be getting a current drop across that toggle ignition switch too. Take the wires off and twist the two ends together and see if that improves the starting. If it does you should replace the switch. Be sure that the ignition resistor is in the circuit between the ignition switch and the coil. It could be bad too. They do deterioate with age. Replace it if it is as old as the tractor. :o)

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Hobo, NC

08-28-2004 06:28:05

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Re: 8N is killin me! in reply to ZANE, 08-28-2004 05:48:09

Dr. Zane in reference to the term push a straigh pin threw the two wires. The corect term would be to give it a vaccination, back probe wires all the time and get a kick outa it when i tell the customer I am giving it its vaccination (grin).
Otter note be carefull bout sticking yer hand in their and turning the motor over with the fan , make sure theis no way spark can get to a spark plug.

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Dan

08-28-2004 04:21:32

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Re: 8N is killin me! in reply to 8NRookie, 08-27-2004 19:15:03

Since you just messed with your fuel system quite a bit, my first guess would be something worked it's way loose and is plugging up your main jet in your carb. I would check it with starter fluid as mentioned below, then if it starts, pull your carb and shoot carb cleaner through all your fuel and air passages OPPOSITE the direction fuel/air normally travels through the carb (wear eye protection). It is a 15 minute affair from start to finish and you may not need a new gasket between carb halves if you just recently put a new one in.

Good luck,
Dan

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JohnMD

08-28-2004 03:52:21

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Re: 8N is killin me! in reply to 8NRookie, 08-27-2004 19:15:03

Check the gap on the points. It is not uncommon for points to close up just after installation. It could be that the hold down screws were not tight enough.

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Dave OH

08-28-2004 22:23:13

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Re: 8N is killin me! in reply to JohnMD, 08-28-2004 03:52:21

Dido!!!
Dave OH

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KenOK

08-28-2004 03:23:36

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Re: 8N is killin me! in reply to 8NRookie, 08-27-2004 19:15:03

Hey Rookie,
I've had my 52 N for 15 yrs and I still consider my self a rookie. You will get a lot of insight from this site if you read it and search the archives. A couple of things to consider. Clean carb really well,blow ot all the little holes. If you have a side mount dist, check the shaft for side wobble. You may need to replace the bronze bushing in the base of dist. I did recently and it made a biiiggg difference

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Len....NY

08-28-2004 01:14:23

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Re: 8N is killin me! in reply to 8NRookie, 08-27-2004 19:15:03

By all means check your ignition switch first. Keep in mind that point locking screws have been known to come loose.HTH

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Fast Ed Ohio

08-27-2004 22:29:47

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Re: 8N is killin me! in reply to 8NRookie, 08-27-2004 19:15:03

Im just gonna say, yep, could be bad ignition switch, easy to check it out with a jumper, that pigtail on the bottom of that new coil needs stretched a bit to make good contact some times, most folks replace dist cap and rotor when doing a good tune up, I know you say your getting good fuel flow, spray some starter fluid in the carb intake if it runs for a few seconds you have a fuel problem .

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Gunked up Ignition

08-27-2004 19:51:17

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Gunked up ignition in reply to 8NRookie, 08-27-2004 19:15:03

Here's a post by Dell a couple of years ago. Posted by Dell (WA) on March 04, 2002 at 13:12:43 from (198.81.17.34):

In Reply to: 2N keeps wanting to quit posted by Bill on March 04, 2002 at 12:08:00:

Bill..... ..there are 2 time related "quits running" problems with N-Tractors. Both "cure" themselves innna couple hrs or overnight cooling off time. The longer it cools off, the longer it'll run after restarting.
1) quits after about 1 hr of runnin..... bad frontmount ignition coil, NOT yer described problem
2) quits after about 10-15 mins..... gunked up ignition switch. simple check. just jumper arount the ignition switch contacts when it happens, if'n starts right up, you know what to do.

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JWM

08-27-2004 19:32:15

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Re: 8N is killin me! in reply to 8NRookie, 08-27-2004 19:15:03

Wire around your ignition switch and see if that fixs it. The easiest way is with alligator clip jumper.James

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