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8N Won't Start

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Spike

08-14-2000 10:17:10




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Help. 1950 8N, sidemount, SN 271980. 6V, positive ground.
Started on first try and ran fine in the morning when I hooked up the brush hog.
Tried to start it later, no go. Cranks fine until battery runs down. Gives a sputter once in a while.
Fresh gas, fuel filters in sediment bowl and carb, new points, wires, plugs, condensor, distributor cap, rotor, voltage regulator, coil, belt, hoses, thermostat, oil/filter, anti-freeze, ignition key switch, starter/solenoid, rebuilt carb with major kit and setting set to book.
Pulled a plug and grounded to engine and had spark. Fuel getting to carb; when choked, runs out of tube. pulled engine oil dipstick, gas in oil, probably from so many attempts to start.
I did notice with the old key switch, when the key was turned on (engine not being cranked), the amp meter indicated a discharge; with new key switch, no discharge noted; needle does fluctuates when cranking.
Timing appears to be OK with indicator pointing at red dot on flywheel with #1 piston up.
Doing a compression test tonight.
Any advise appreciated

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Snow Plow

08-15-2000 18:00:55




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 Re: 8N Won't Start in reply to Spike, 08-14-2000 10:17:10  
Make sure that the PTO is off when you try to start.

It is normal for gas to run out the carb but it might be flooded real bad.

Make sure you have good spark at all plugs. I just lay them out on the block.

Leave the plugs out for a couple of hours so things can dry up.

Hook up a 12V jump so you won't run your 6V into dust. Put the neg. on the starter post (not bat.) and then the pos. on a good ground (the running board works well and you won't mind a few arc scars). Be careful. as soon as the pos. hits the tractor the starter goes. Make sure its in neutral. This will really crank the engine and give good spark but won't hurt anything.

I'd shut off the gas and wait until she starts to pop. Then gas it. Don't choke it at first, if its flooded it needs air. when she goes it might backfire and smoke a bit from too much gas in manifold/exhaust.

Good luck!

ps I never have much luck with starter fluid but it does work for some. Use it very lightly!

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JOHN

08-14-2000 21:23:07




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 Re: 8N Won't Start in reply to Spike, 08-14-2000 10:17:10  
Just a thought: are you cranking with the clutch in or out? If you have the PTO engaged, and you are cranking, then you are also turning the brush hog, which would require lots more cranking amps. I went through this for a while and then tried it with the PTO disengaged, which worked. I was told by a parts outfit that the regular 6 volt battery has a lot less cold cranking amps than e.g., a 12 volt, and that it is actually pretty marginal, especially on these old tractors, which is why some people change them over to 12 volt.
Anyway, just a thought. Good luck with it.
JOHN :>)

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Mark *8N126075*

08-14-2000 14:22:28




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 Re: 8N Won't Start in reply to Spike, 08-14-2000 10:17:10  
Claus' comments are good. Sounds like you've done some recent tune-up work. I posted a lengthy note on my experience a couple of months back. Bottom line- new condensors are notoriously inconsistent.
if the old one worked, stick it back in and try it. I learned to keep 2 or 3 on hand because of this.



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Claus

08-14-2000 11:27:25




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 Re: 8N Won't Start in reply to Spike, 08-14-2000 10:17:10  
Well, the ammeter will show discharge only when the points are closed. Otherwise no current is being drawn. The fact that it fluctuates indicates that your ignition system is drawing current. You may have a simple condition of flooding. Next time when you start it, disconnect the air tube and do make sure your choke is open. Then open your throttle to maximum and crank.. This will allow maximum air into the intake manifold. Just a possibility.
Happy Motoring
Claus

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