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Man, tell me what's next???? NEW and NON-ELECTRICAL Problems! (grin)

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Andy - Hammond,

08-02-2001 14:16:38




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(grin)

I am having some more (NON-ELECTRICAL) problems!

Now that is got started back up and the distributor, ignition & electrical systems have been total rebuilt and rewired. Every connector and cable is new and tested. It starts up great.

Now the problem of the stalling is still happening (happens under PTO/engine load - I can ease it off from stalling temporarily by clutching it in and taking the load off of the engine) - The engine sounds horrible - sputtering worse than before. I took the carb down and disconnected all of the linkages. It wasn't too dirty but I soaked it and cleaned out everything with carb cleaner. Everything was spotless and the gaskets were in good shape.

I just know that something is out of adjustment bigtime. I have tried the recommended course of adjustment to no avail and the idle screw (smaller of the 2 adjustment screws right?) makes absolutely no difference to the constant sputter/roughness of the engine at idle - the main adjustment screw seems to affect the unit both at idle or under load but I cannot get it to smooth out no matter how much I adjust it. I know that it is affecting the running since I can hear it get worse and eventually die out but I cannot seem to smooth it out.

Yes the fuel flow is great and the elbow carb filter is crystal clear of debris. I have a NOS Cyclone air assembly on my tractor and the oil is clean and measured up to the line on the bowl. Can someone tell me how to get rid of this rough running engine. I have no doubt that it is definately carb/air/gov related. I just don't know what else to try.

Regards,
Andy

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burk

08-03-2001 13:37:14




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 Re: Man, tell me what's next???? NEW and NON-ELECTRICAL Problems! (grin) in reply to Andy - Hammond, LA, 08-02-2001 14:16:38  
Sounds alot like a problem I had with my '52 a few weeks back. Turns out it was a worn throttle shaft. I got a new shaft, packing, and brass retainer from don b.

Before the fix, anytime there was a load, the engine would sputter like it was going to die. If I pushed in the clutch, it ran fine. Also, I never could get it to idle lower that 600rpm. I suspected the Govenor at first. I realized the real problem by accident. I was trying to adjust the idle, and pushed down on the throttle shaft with my finger, causing the engine to sputter. I found that I could move the shaft. In one position, it ran fine, in another, it sputtered.

It seems that everytime the govenor kicked in, it moved the shaft.

After the fix, I can get mine to idle as low as 200 rpm. Runs great now under load. I also learned that my govenor does indeed work.

I thought about a complete carb rebuild, but decided to only fix what I knew was broke. Spent $5 on parts and all is well.

Good luck.

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Phil (AZ)

08-03-2001 07:44:46




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 Re: Man, tell me what's next???? NEW and NON-ELECTRICAL Problems! (grin) in reply to Andy - Hammond, LA, 08-02-2001 14:16:38  
Andy, If its a Front Mount you could have 3 & 4 miswired. The Molded Numbers on the Dist Cap are
"NOT" Dist numbers but they "ARE" Destination Spark Plug Numbers.

Hope This Helps,



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Andy - Hammond, LA

08-03-2001 08:40:37




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 Re: Re: Man, tell me what's next???? NEW and NON-ELECTRICAL Problems! (grin) in reply to Phil (AZ), 08-03-2001 07:44:46  
What? The firing order is 1-2-4-3 - So the cap has the following order:

1 3

2 4

going counter-clockwise

So, what are trying to say with the CAP #s being different than the plug #s?

Andy



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Phil (AZ)

08-03-2001 11:50:43




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 Re: Re: Re: Man, tell me what's next???? NEW and NON-ELECTRICAL Problems! (grin) in reply to Andy - Hammond, LA, 08-03-2001 08:40:37  
Andy, The Molded Numbers on the Dist Cap "ARE" the Sparkplug Numbers (NO need to think of Timing just connect them to the Destination as Molded)

Dist Rotates CCW firing each Spigot in sequence,
looking at the Cap #1 (marked 1), # 2 (marked 2) , # 3 (marked 4) and # 4 (marked 3)

Hope that makes sense



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Paul8n

08-03-2001 04:13:09




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 Re: Man, tell me what's next???? NEW and NON-ELECTRICAL Problems! (grin) in reply to Andy - Hammond, LA, 08-02-2001 14:16:38  
Include your e-mail address on your topic and you might just get the answer you need. Kind of like me asking you for that 4 x 4 address. Sounds like someone has bottomed out your idle screw and main jet and ruined the tips and possibly the seats. T ake a real close look!!!!! !!



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just a reminder . . . Dell (WA)

08-02-2001 23:19:53




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 Re: Man, tell me what's next???? NEW and NON-ELECTRICAL Problems! (grin) in reply to Andy - Hammond, LA, 08-02-2001 14:16:38  
Andy..... ..on the carb idle adjust needle.

It surprizes a lot of people when they hear an N-Engine at idle. 400 rpm is so slow to modern ears used to hearing 700 rpm V8's and 900 rpm sewing machines.

If you have your idle speed set too high, you could be operating the carb on the main jet circuits and muckin around with the idle adjust won't affect ennything. See if'n you can't slow down your engine idle speed and then try your idle adjust needle. Again, tune for maximum rpms, and re-adjust idle speed as needed.

Engines that won't take a load can be eather bad centrifical advance springs and weight pivots in the distributor OR the governor balls are stuck.

To rod a carb. This come from the radiator shop. Used to be, when radiators got clogged up from crud, a worker would patiently push a long thin rod down each radiator tube like a pipe cleaner or rifle barrel (except not fuzzy). Now they just sell you a new radiator because it is cheaper.

Acetylene welding torch tips often get clogged from slag. They sell a set of very fine wires that the welder will clean the tip with. Some people use these fine wires to "rod" the passages in the carb to clean them out of crud like varnish and bits and pieces of stuff.

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llamas

08-03-2001 04:33:11




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 Re: Re: Man, tell me what's next???? NEW and NON-ELECTRICAL Problems! (grin) in reply to just a reminder . . . Dell (WA), 08-02-2001 23:19:53  
Don't rod a jet with a steel tip cleaner. You'll score it and only make matters worse.

If you want to clean a jet mechanically, snake some nylon (plastic, whatver it's made of these days) fishing line of suitable size through the jet and run it back and forth. This will burnish off the gum and snot, but will not touch the brass.

JM2¢W

llater,

llamas



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Big Mike

08-02-2001 21:47:15




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 Re: Man, tell me what's next???? NEW and NON-ELECTRICAL Problems! (grin) in reply to Andy - Hammond, LA, 08-02-2001 14:16:38  
115 psi is great and I doubt burnt valves are the problem then. If I would have read further down I would have seen that you reported 115 psi across the board. I would check and make shure the advancer on the dist is not stuck. re-check point gap and firing order. Clean every little orfice ,jet and passageway in the carb. Change the gas in the tank. Then maybe its the governor But I have yet to work on one of these so can offer no advise other than check for worn linkage and smooth operation...Big Mike

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Big Mike

08-02-2001 18:50:01




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 Re: Man, tell me what's next???? NEW and NON-ELECTRICAL Problems! (grin) in reply to Andy - Hammond, LA, 08-02-2001 14:16:38  
This is the experience gained last week with one of the 8N`s that we brought into the shop. It had a sputter from the exhaust and would stumble bad when starting off with a load on it and the throttle positioned anywhere above idle. If you slipped the clutch just a little, off it would go. It seemed to be lacking in power compared to the other N`s.It has been sitting for a year or so at my dads house so We rebuilt the carb and did an electrical tune up also changed the ignition switch cause Dad forgot to bring the key. Ran for 1/2 hour no improvement. Noticed air bubbles in the radiator and a little steam from the exhaust so I pulled the head no obvious signs of a blow out on head gasket but it was leaking for shure. Two exhaust valves were toast, burnt bad. I took two old valves from a motor that we are rebuilding and lapped them in. This solved the problem of it sputtering and stumbling. Now it runs much better. We have 11 of these N tractors to work on 5 of which don`t run so I went this route. I only consider it a temp fix till I have time to do a proper rebuild on the motor. A compression check will tell you if the valves are burnt without removing the head. I didnt do one because I knew it had a bad head gasket and had to pull the head anyways..... ...Big Mike

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Andy - Hammond, LA

08-02-2001 19:03:29




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 Re: Re: Man, tell me what's next???? NEW and NON-ELECTRICAL Problems! (grin) in reply to Big Mike, 08-02-2001 18:50:01  
Well, thanks for the great info. I am getting 115psi across all 4 cylinders dry. I doubt based upon your commentary that these results would coincide with an intense "burnt valve" problem but let me know your opinion.

Thanks!
Andy



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Randy B

08-02-2001 17:31:17




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 Re: Man, tell me what's next???? NEW and NON-ELECTRICAL Problems! (grin) in reply to Andy - Hammond, LA, 08-02-2001 14:16:38  
Andy, Before you buy a carb I would double check the firing order. You said it was right but if you start pulling plug wires 1 at a time and don't notice a change I'd say that was probably the problem.If it's not wired right you should only notice a change on 2 cylinders.HTH
Randy B



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JerryU

08-02-2001 17:17:28




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 Re: Man, tell me what's next???? NEW and NON-ELECTRICAL Problems! (grin) in reply to Andy - Hammond, LA, 08-02-2001 14:16:38  
Andy, I'm sorry I haven't been following the whole saga, so if what I say is a repeat, just ignore it. If the carb is okay, the fuel supply, ie. fuel strainer and tank, and you have done the distributor and plug wires, there are two obscure things. One is the link between the governor and the carb being worn. This will cause lurching and sometimes stalling. The second, and I'll bet someone covered it was the iginition switch. I went through the carb, coil, fuel, and it would still lurch and stall after a while. Turns out it was a bad ignition switch. That can be checked by jumpering it out.

If these have been suggested, I will go back to my "screen saver" mode.

JU

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smokie

08-02-2001 17:08:28




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 Re: Man, tell me what's next???? NEW and NON-ELECTRICAL Problems! (grin) in reply to Andy - Hammond, LA, 08-02-2001 14:16:38  
andy i have your answer you must be just about sick of that old thing so just give it to me and i will beat my head on it for a while when i get tired of it ill pass it alone to the next fella by the time it make the rounds of everyone on the bourd it should look and run like new.(lol grin lol)



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Andy - Hammond, LA

08-02-2001 19:07:38




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 Re: Re: Man, tell me what's next???? NEW and NON-ELECTRICAL Problems! (grin) in reply to smokie, 08-02-2001 17:08:28  
I say let's begin! How I would love all of you guys here to help me work on it in person!!! Then at least I would have someone to listen to my on-going banter and foolishness!
hahaha LOL

Andy



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bj/8N/mt

08-02-2001 15:40:25




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 Re: Man, tell me what's next???? NEW and NON-ELECTRICAL Problems! (grin) in reply to Andy - Hammond, LA, 08-02-2001 14:16:38  
exactly what did you do to the carb? did you rod out all of the passages and jets? some times things will look swell after a soak out but fifty years of crud won't secumb to anything short of fine wire or an ascetelene [sp] cleaning tip. did you set your float with a drill bit? [I think 1/4 some say 9/32nds]

what was the trouble that started you throwing parts at it? with enough information somebody on this board will tell you how to put a man on the moon so this too should pass.

Your mileage may vary

/

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Andy - Hammond, LA

08-02-2001 15:50:52




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 Re: Re: Man, tell me what's next???? NEW and NON-ELECTRICAL Problems! (grin) in reply to bj/8N/mt, 08-02-2001 15:40:25  
I just dropped it and cleaned it out with carb/parts cleaner. Let me clear the air, I have not started "throwing ANY parts at it" - (I said that I was thinking about buying the carb repair kit from DonB.)

Where am I supposed to use this "fine wire" and what is this "rodding" - And set you float with a drill bit???? (I haven't replaced the float - but what do you mean adjusy with drill bit?

Thx,
Andy

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bj/8N/mt

08-02-2001 16:21:18




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 Re: Re: Re: Man, tell me what's next???? NEW and NON-ELECTRICAL Problems! (grin) in reply to Andy - Hammond, LA, 08-02-2001 15:50:52  
If you didn't take the carb apart you probably didn't do much good. Just moving the dirt around the outside only makes it look pretty. There are some excellent archive articles on how to rebuild a carb and even a video.

Throw parts at it? Electrically you don't seem to have left much intact.

What was the trouble that started you working on it?

Rebuilding a one barrel carb is far from rocket science but there are techniques that need to be followed. Inside the carb you will find a number of jets and passages that all need to be cleaned to do a good job. The float is set to 1/4 inch according to F 0 4 manual. If you try to do it by eye with a ruler you will likely miss. A drill bit sits neatly on the gasket and lets you bend the tang CAREFULLY IT CAN BE BROKEN to get 1/4 float drop. Some people are lucky enough to reuse carb gaskets and parts. Maybe you are one of them but I am not. You can buy just the gaskets or a complete kit. Whichever way you go I think the concensus is clear that you need to either clean up your carb or take a chance on a rebuilt--some of which are going to be worse than what you have.

Your mileage may vary

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Bill W.

08-02-2001 15:35:24




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 Re: Man, tell me what's next???? NEW and NON-ELECTRICAL Problems! (grin) in reply to Andy - Hammond, LA, 08-02-2001 14:16:38  
Andy: perhaps you stated so in your recent discourses that you put new correct plug wires on. If you did, then it seems most likely that you have a glitch in the carburetor. If you put in overhaul kit and did not clean, soak, boil out all the little crevases, it could cause rough idling. Boiling out the carb with muratic acid ( after float, needles, and choke and fuel openings have been removed) and then BLOWING everything out with an air hose could be the difference. There is a 2 to 3" shaft which goes down through your carb's venturi which has tiny holes that can clog. After you have boiled it out, remove the shaft with a 7/16" deepwell socket, take a small wire from a wire brush and clean these several holes. This may be the difference you're looking for.

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jimp Co

08-02-2001 14:33:10




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 Re: Man, tell me what's next???? NEW and NON-ELECTRICAL Problems! (grin) in reply to Andy - Hammond, LA, 08-02-2001 14:16:38  
Andy, whish I was there to check it out with you. I am having almost the same problems with a 67 jeepster with the 225 v6 that I just bought.
I will figure it out tho.
Hey, what does it do when you try and choaking it when it bogs down?
From your description, it could be too much fuel or too little. what color is the exaust when it does this.
Are you sure the spark plug wires are correct?
Hope to be able to help you get going at FULL speed.

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Andy - Hammond, LA

08-02-2001 14:41:28




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 Re: Re: Man, tell me what's next???? NEW and NON-ELECTRICAL Problems! (grin) in reply to jimp Co, 08-02-2001 14:33:10  
Choking just kills the engine completely rather quickly. No exhaust that I can tell - the other exhaust that I have seen is a slight clear/whitish but I think that may have just been the carb cleaner etc. (as it only happened once and it didn't last long at all) - My 1950 8N (with 49 engine and FMD) doesn't burn any oil or smoke and compression is 115 across the cylinders.

Plugs wires are correct. By the way, I meant to point out that the "idle adjustment screw" seems to have absoultely zero affect on the engine - like it is not even working. But I could be wrong.

Regards,
Andy

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Bob (WI)

08-02-2001 17:28:05




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 Re: Re: Re: Man, tell me what's next???? NEW and NON-ELECTRICAL Problems! (grin) in reply to Andy - Hammond, LA, 08-02-2001 14:41:28  
Andy, If when you adjust the idle screw and nothing changes I would have to say one of the passages are blocked, you'll have to take it apart and look closely and take a fine wire to every little opening you see, BTW will you please tell us what the other electrical problem turned out being, the suspense of waiting to hear of the fix is killing me. Just a thought



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tlak

08-02-2001 15:22:23




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 Re: Re: Re: Man, tell me what's next???? NEW and NON-ELECTRICAL Problems! (grin) in reply to Andy - Hammond, LA, 08-02-2001 14:41:28  
Don’t know what the problem is but doesn’t appear to be a vacuum leak. If you choke it and it continues to run then it is getting air from another source which would your vacuum leak.



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jimp Co

08-02-2001 15:07:01




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 Re: Re: Re: Man, tell me what's next???? NEW and NON-ELECTRICAL Problems! (grin) in reply to Andy - Hammond, LA, 08-02-2001 14:41:28  
May be a vacuum leak in the manifold. Take some starter fluid or ether or maybe carb cleaner spray or WD40 and spray around the intake/exaust while running and see if that makes any change in the way it sounds.
If it tries to smooth our some, just a little even, spray more and see what it does.
I it helps, either a gasket has gone or there is a leak between intake and exaust ports.



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Ray

08-02-2001 15:49:31




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 Re: Re: Re: Re: Man, tell me what's next???? NEW and NON-ELECTRICAL Problems! (grin) in reply to jimp Co, 08-02-2001 15:07:01  
Andy,
Double check your firing order and DISTRIBUTOR rotation, with the motor running as close to idle as you can, remove each plug wire from the plug one at a time with a pair of insulated pliers and see if it makes a difference in the motor. A normally fired engine will hesitate and run rough with each plug wire off. If your firing order is already off then it would kill the engine right away Good Luck

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Andy - Hammond, LA

08-02-2001 15:23:01




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 Re: Re: Re: Re: Man, tell me what's next???? NEW and NON-ELECTRICAL Problems! (grin) in reply to jimp Co, 08-02-2001 15:07:01  
Oddly enough, I just got informed by Rich8N to do the exact same thing. Tried it with WD-40 and nothing - no increase in speed on the engine or reduction in rough running. I guess it does not have a identifiable air leak on or near the manifold/carb area of the engine.

I am going to heed some good advice and order the complete carb repair kit and give that a shot.

Regards,
Andy



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