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8N won't start

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Rose Hill Bill

06-19-2002 09:54:19




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8N isn't starting. Turns over but doesn't seem to be firing. Battery will turn engine until drained. I need an explanation for dummies of how I can trouble shoot my problem. Can a weak battery turn over the engine and not provide power for the spark or do I have points/condensor problems? Really miss driving the tractor around. Need help to get her going. Any help/suggestions will be appreciated. Thanks in advance!

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Fast Ed Ohio

06-19-2002 22:26:15




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 Re: 8N won't start in reply to Rose Hill Bill, 06-19-2002 09:54:19  
Rose Hill Bill, You got that positive side of the battery going to ground ? Thats good, Old Ns are positive ground.The negitive side goes to the starter solonoid . My friend replaced his battery , points, cond. , rotor , ect. , still would not start untill I told him his battery was in wrong , it started on the first crank , ( he said what ever you do dont tell anyone )



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Danny in CO

06-19-2002 11:47:03




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 Re: 8N won't start in reply to Rose Hill Bill, 06-19-2002 09:54:19  
Bill,

The first thing I would do is narrow it down to either a fuel problem or an electrical problem. Try a squirt of starting fluid. It it starts or tries to, my bet would be a fuel problem. If it doesn't start or try to on starting fluid, my bet would be electrical. Points, condenser, etc, as Steve said.

There are only 3 things you need to get an engine to run: Fuel, Air, and Spark at the right time. On these old Ns, there is 1 other factor: you need enough compression to pull the gas into the cylinders. if you have all of these, it should start and run.

Let us know what you find.

Danny

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Evil Steve

06-19-2002 10:16:48




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 Re: 8N won't start in reply to Rose Hill Bill, 06-19-2002 09:54:19  
Side or front mount dist? Wouldn'thappen to know your compression wouldya?

Okay, you've turned the fuel valve open and cranked with no hint of starting. I'd say you have a basic tune-up issue. Replace condensor, points (don't bother filing them - use for spare), rotor, dist cap and use the specs called for on your tractor (.015" point gap on front mounts; .024" side mount).

Some may not agree with spending extra $ to replace the above, but they are not expensive parts and you need to have that piece of mind.


Pull plugs and keep track of which one came out of each cylinder. Make notes of oil, carbon, yellowing, etc. and write back so we can interpret for you. If plugs look clean, regap and put 'em back in. If not, replace.

Even though tune-up might not be your problem, doing these things greatly reduces the other (and more pain-in-the) type of problems.

If no go after tune-up, take an xtra plug (gapped properly), pull #2 or #3 spark plug wire and attach to extra plug. Ground plug to engine and have someone crank.

If nice blue spark, problem is one of two fuel supply replated problems: a) clogged fuel screens b) carb problem. To check, squirt a little starter fluid in each cylinder, replace plugs and crank. If fires up, carb for sure.

If spark is yellow or non, problem is either coil, or poor electrical connections like starter switch, coil connections, battery ground, etc.

To answer your ? on battery, no. If you have enough to crank, you have enough for spark.

If none of above works, write back and we'll look at some f the more "fun" things.

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Oh AND... Evil Steve

06-19-2002 10:19:27




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 Re: Re: 8N won't start in reply to Evil Steve, 06-19-2002 10:16:48  
Anyone who claims he's never forgotten to pull out the kill switch (and cranked forever without any fire) isn't being truthful. I've done it a few times. Always involves a beer in my hand too.



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