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Huffing and Puffing 8n

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Kenster

07-03-2007 06:09:25

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I just did a tune up. New plugs, wires, points, condensor. I did a carb adjustment following Dell's advise - set the side pointing screw to highest rpm, not smoothest, fastest. "Understand?" Set the idle speed low. Did this dance several times til I got a good smooth low rpm of 400 with the throttle at the stop. High end was right at 2100.

When I started plowing yesterday I was getting a puffing/chugging in the exhaust. Not a backfire. It seemed to get worse as time went on. I was plowing up a two acre sandy field that was just turned over about a month ago. It was nice and soft. I was pulling through the field easily in 4th gear. After a while, it didn't seem to want to do it in 4th. Little power. The other three gears pulled just fine. 4th worked good on the road up to full speed.

Top RPM has dropped to about 1900 from 2100.
Conditions were not dusty at all so I was not sucking dirt. Soil is slightly damp.

Ideas and suggestions?

Thanks,

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Kenster

07-03-2007 16:46:16

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Re: Huffing and Puffing 8n in reply to Kenster, 07-03-2007 06:09:25

Jeff, it honestly did a great job most of the time, unless, where the soil was too soft, the plow dug in too deep. I wasn't exactly flying through the field but my Ferguson moldboards sure were turning over the dirt!
I think I do have a strong engine. The mechanic who helped solve my recent electrical problem did a compression check. He said three cylinders were 130. One was 120. I'm not sure about such things but I think those are pretty good numbers.

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lonestarjeff

07-03-2007 22:14:10

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Re: Huffing and Puffing 8n in reply to Kenster, 07-03-2007 16:46:16

Yes, those are very high compression #'s for a flathead engine. Must be why it kept pulling that plow in 4th. I'd expect the engine was running pretty hot, especially #4 cylinder.

Since the N has no temp guage the only early sign of overheating is bursts of hot water thru the overflow tube onto the ground, not easy to spot if you're not looking for it.

If you're still getting the pop & puff at idle you might try a little experiment to isolate which cylinder it's coming from. While the engine is idling pull each plugwire off one at a time. The popping will stop when you pull the wire from the guilty cylinder.

If this works for you & it turns out to be #4 cylinder, I would suspect a burned valve from overheating. You could get another compression check to be sure.

Jeff

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Kenster

07-03-2007 15:45:06

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Re: Huffing and Puffing 8n in reply to Kenster, 07-03-2007 06:09:25

Okay, let me see if I understand this. Plowing in 4th gear is not a good idea. Got it. One of the reasons I did was after I plowed it the first time, and posted pics of the result, other members told me that if I plowed faster I'd have better luck getting the soil turned over with the moldboards.

My soil is nearly pure sand. It had been thoroughly plowed about a month ago. I knew that there were no rocks, no tree roots, etc. I never started out pulling a load in 4th. I'd get up to speed then drop the plow.

Anyway, I stand chastized and won't do it again.

Now, can someone help me with the real issue? The popping and puffing, even at idle? Is it just a carb adjustment? Too lean? Too rich?

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lonestarjeff

07-03-2007 16:09:09

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Re: Huffing and Puffing 8n in reply to Kenster, 07-03-2007 15:45:06

Kenster...I wish you had some video of pulling the plow in 4th. The picture I painted in my mind kinda reminds me of the dirt flying behind a motocross bike.

You obviously already got the picture from the other posters that's not a good idea for you or the tractor, but your N must be in pretty good tune to hang in there under such a load that long.

Keep'er in 2nd & enjoy the extra seat time. :-)

Jeff

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BillM (OH)

07-03-2007 15:22:05

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Re: Huffing and Puffing 8n in reply to Kenster, 07-03-2007 06:09:25

First time you hook under a big rock plowing in 4th gear, you'll never do it again. I have done it a couple of times plowing in 2nd and the steering wheel tried to get to my backbone.

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Den N Ms

07-03-2007 13:58:38

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Re: Huffing and Puffing 8n in reply to Kenster, 07-03-2007 06:09:25

I think Kenster is pulling more than a plow in 4th gear.He is doing all that Huffing and Puffing pullin our leg!

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Den N Ms

07-03-2007 14:04:27

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Re: Huffing and Puffing 8n in reply to Den N Ms, 07-03-2007 13:58:38

A 8N aint going to pull a plow in the ground in 4th gear!

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Smokeys427

07-03-2007 13:55:21

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Re: Huffing and Puffing 8n in reply to Kenster, 07-03-2007 06:09:25

4th gear and plowing!!! third party image

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Mr Bob

07-03-2007 13:19:35

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Re: Huffing and Puffing 8n in reply to Kenster, 07-03-2007 06:09:25

4th gear in an 8N is ENTIRELY too fast to use any impliment. It's dangerous to both operator and equipment. 2nd gear in an 8N is plenty fast to plow.

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Cargocult

07-03-2007 13:57:19

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Re: Huffing and Puffing 8n in reply to Mr Bob, 07-03-2007 13:19:35

"4th gear in an 8N is ENTIRELY too fast to use any impliment"

Well, I have raked many acres of hay with the dreaded Ferguson Side-Delivery Rake in 4th gear! It is meant to do that! They even sold a "speed Reducer" for the PTO if the tractor could not be operated in 4th gear, due to hilly/rough/etcetcetc conditions! So, in this case u wrong! However, I agree that 4th is extremely too fast for plowing! Maybe third, in the proper soil conditions. But not 4th. Unless u have one of them there Sherman trannies.

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Mr Bob

07-03-2007 15:21:38

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Re: Huffing and Puffing 8n in reply to Cargocult, 07-03-2007 13:57:19

This raking in 4th might be ok if the rake was meant to do so; but most hayfields I've ever worked in have a goodly supply of groundhog holes and are very rough in places, and I'd think that would be very for the tractor's front end and steering.

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Ross Pugh(NC)

07-03-2007 11:45:05

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Re: Huffing and Puffing 8n in reply to Kenster, 07-03-2007 06:09:25

Come on people, use your heads, 4th gear is for road traveling not plowing anything. That is why you have a transmission, use the proper gear for what you are doing. It ain't rocket science!

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Colin King

07-03-2007 08:05:54

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Re: Huffing and Puffing 8n in reply to Kenster, 07-03-2007 06:09:25

I'll have to pass on attempting to diagnose your power problem, but as the others have said, pulling an implement in 4th gear seems like a bad idea. Not only is that a lot of strain on your engine, I'd think that by starting in 4th gear with an implement you'd be putting a lot of premature wear on the clutch.

Additionally, if you hit a bump in 4th gear at 3/4 throttle, you're endangering yourself. Unless you've got a seatbelt installed, you could go a flying.

Now I'll get off my preachy horse ;-) Just be safe. We don't want to have to mourn the passing of a fellow board member.

Colin, MN

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arthur ward

07-03-2007 07:27:30

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Re: Huffing and Puffing 8n in reply to Kenster, 07-03-2007 06:09:25

4th gear? are yu cRaZy???
yes, main jet in and back out to previous setting. that is too much load in 4th.

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souNdguy

07-03-2007 06:53:47

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Re: Huffing and Puffing 8n in reply to Kenster, 07-03-2007 06:09:25

Hmm.. I've almost never used 4th gear unless on the road.. I'd have never considdered using 4th with an implement on it.

Try closing your mainjet and then reopening to where you have it set. A small piece of trash may have loged in it slightly restricting fuel flow.

post back.

Soundguy

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Kenster

07-03-2007 06:11:30

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Re: Huffing and Puffing 8n in reply to Kenster, 07-03-2007 06:09:25

Forgot to mention that it's a 1952 sidemount.

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Ross Pugh(NC)

07-03-2007 11:49:10

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Re: Huffing and Puffing 8n in reply to Kenster, 07-03-2007 06:11:30

That doesn't matter, you should be using a lower gear for ground implements.

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