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8NStarting Problems

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Pat B.

12-22-2002 18:05:27

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I've developed problems trying to start my normally responsive 8N. First of all it seems to be flooding more than usual, mainly due to the difficulty starting and choking required.The starter seems to crank the engine a few times then disengages and just spins. My guess is the starter is on its way out, but before I dive into that I'd like a second opinion if anyone is willing.

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Dale-PA

12-23-2002 07:56:58

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Re: 8NStarting Problems in reply to Pat B., 12-22-2002 18:05:27

Pat, I've had my 8N (front mount dist)for 10 years now and went through the whole gammit of problems. Actually they still keep coming. Get yourself an FO-4 manual. You truly can solve many problems that you normally think would require a mechanical type person. I agree with Dave-OR. Your starter sounds like it is functioning as it should. Would be worth popping it off (2 bolts) and taking it to a shop to get it checked out for wear (bendix,armature,brushes). While it's off, might as well check the flywheel ringgear teeth for adverse wear. I upgraded to a 12 volt system and love it. Proper functioning 6 volt system works just spiffy also. Get a rebuild kit ($25 or so), pull the carb. and have at it. Check the electrical system for proper current flow start to finish. Dell recommends a hotter burning Champion H-12 plug that I still need to put in mine. The coil could be a bugger to diagnose. I used my old 6 volt coil through my 12 v conversion, and it went out on me. Classic symptom of a bad coil is getting hot and cutting out after 10-15 minutes of running. After it cools, it will start and run again. I just bought a 12 volt coil with intentions of returning it if it didn't solve the problem, but I pretty much had all else checked out and indeed the coil turned out to be bad. Pull the distributor (easy, 2 bolts) check for wear. Replace cap and rotor if not done recently.
check points/gap (.015), condensor, oh and the copper wire for attachment. Sounds like alot Pat, but it's really just basic tune-up jargon that your tractor needs anyway, and it gets you to know your tractor also. Oh hey, longshot, but don't rule out moisture/water in the gas, depending on length of time the tractor sits around. Piece of mind, just drain it and put new in.

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Upper Peninsula, Mich

12-23-2002 06:49:50

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Re: 8NStarting Problems in reply to Pat B., 12-22-2002 18:05:27

Hi Pat. What looks like a gas problem at times turns out to be an electical problem. Check your spark. If you don't have a strong spark, find out why and fix it. Could be just bad connections, key switch going bad. Try not choking it, but spraying a little starting fluid in it. If it doesn't start this way, then look for bad spark. Dell has a better handle on this stuff than I do. If he writes in follow his instructions. Merry Christmas and Happy Holidays -- and good luck. Ron

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David - OR

12-23-2002 06:10:24

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Re: 8NStarting Problems in reply to Pat B., 12-22-2002 18:05:27

There's probably nothing wrong with the starter.

"Disengages and just spins" is characteristic of the Bendix drive starter in the N-Series when the engine coughs and sputters and tries to start but fails. On the first "coff" the Bendix retracts the drive gear (to protect the starter), but if the engine doesn't actually start you are left with the starter spinning but not engaging the flywheel.

The starters used in today's cars use a different scheme, one that allows the starter to stay engaged through a few coughs and spits until the engine is actually, really running. The clutch drive, aka positive drive, Bendix replacement you can buy for the 8N starter evidently retrofits the same capability.

It can be really annoying when dealing with a cantankerous tractor, but I think your starter is probably working as it was originally designed to.

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Eddy

12-23-2002 04:55:42

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Re: 8NStarting Problems in reply to Pat B., 12-22-2002 18:05:27

I'll give you what I know (only because of my past mistakes). I traced what I thought was a flooding problem to gas not flowing good to the carb(afterI rebuilt it)from the gas tank,to finally changing the coil on my frontmount 8N. The coil is what fixed it. Sometimes your coil will start going out and still be working every so often. They are real flaky and work one minute and not the next. So even if it ran good last time you ran it and now it won't start don't rule the coil out just yet.

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BS@ElmaNY

12-22-2002 20:27:32

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Re: 8NStarting Problems in reply to Pat B., 12-22-2002 18:05:27

Give due attention to the usual experts' opinions here, but my experience with the flooding problem is to get a carb rebuilt kit and install it. Or, pay someone with experience to install it for you. I found that rebuilding the carb prevents a lot of problems. There are so many things that could go wrong in a carb, and likely more than one thing at a time. It's worth it to eliminate all those possible problem areas once and for all.

It looks like you might have 2 problems at the same time: carb & starter (?). But, if you get the carb rebuilt, you know that that variable is not a factor. To repeat myself, there's just so much to go wrong in the carb. After all, all those elastemeric (rubber) parts and all don't have a very long life. The float (bakelite?) can break down over time, too. You can get gas deposits, etc.

That's just my opinion. With both our tractors (and a couple of snowblowers), we just bit the bullet (sorry for the old cliche) and had the carb rebuilt. To us, it seemed to eliminate a lot of starting headaches.

Again, heed the experts' advice first. I just wanted to add my experience.

Bri

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hoosiersteve

12-28-2002 12:35:18

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Re: Re: 8NStarting Problems in reply to BS@ElmaNY, 12-22-2002 20:27:32

I am having the same problem. I have 8N front dist. I am not getting fuel from the carb to the cylinders. I'm getting ready to pull the head and check the valves. Any comments?

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