[Farmall] Super C Problem

[Ben Wagner]

I know Super C engines use the same C-123 that the late Super A does, which
isn't too much different from my C-113 in the A.  My C-113 A did the same
trick a few weeks ago, and a very knowledgeable person on the AT ATIS list
mentioned that spark plugs can contribute.  If you have old plugs, Autolite
especially, pull them out and try Champion D-21 plugs.  D-21 burns hotter
and provides better combustion.

However, in my very humble opinion, I think that those recommending fuel
blockage are close.  My Super A was blocked by remnants of gas tank sealer
that worked loose.

1.  Check the inside fuel tank.  Like Barney, said, it could be covering the
outlet up but disappearing after the suction is over, so if you see anything
floating be suspicious!

2.  Check inside the gas line.  Blow air through it; even if you get air out
the other end, I'd push a soft wire through the line.  I used a soft gun
barrel brush, no the copper type but the cotton brush.  If it's the rubber
type, it wouldn't hurt to replace it.  The new gas dissolves rubber lines,
starving the engine (air in the line) or clogging the carb.  The dissolved
rubber line happened on a lawnmower I was working on; the engine acted like
it had no fuel.  The line was cracked, but when I replaced the line it still
ran poorly.  Turns out, a little chunk of rubber corked the way into the
inlet.

3.  Check the needle/seat/inlet valve in the carb where the gas line
connects to the carb.  There is an elbow that catches all kinds of junk.  My
favorite was a shred of paint that clogged the inlet of the seat.  I
couldn't tell (usually when the seat is glogged the carb floods) but when I
unscrewed the inlet I found the problem!  But if your carb is clean, go up
from there; inlet, fuel line, inside fuel tank.

Ben Wagner

On Tue, Aug 2, 2011 at 11:06 PM, Barney Van De Weert <bbvande at yahoo.com>wrote:

> Just for fun, make sure that there is nothing floating around in the fuel
> tank
> that may be covering up the outlet. By the time you shut it off and check
> the
> fuel flow it may float away from it.
>  Barney Van De Weert
>
>
>
>
> ________________________________
> From: Jeff & Ginny Pomije <vjpomije at bevcomm.net>
> To: farmall at lists.antique-tractor.com
> Sent: Tue, August 2, 2011 9:10:47 PM
> Subject: Re: [Farmall] Super C Problem
>
> The ignition coil was replaced last year when I had a tractor mechanic
> trying to figure out the problem.  Could a new one go bad in a year?
> The carburetor is only a couple years old, so it should not have been
> real dirty.  I know the mechanic took the carburetor apart and went
> through it looking for any blockage.  He said a part was not seated
> correctly, I think it was the jets.
>
> One other thing, it appears to happen most often when the tractor is hot.
>
> Jeff
>
> On 8/2/2011 6:01 PM, Mike Sloane wrote:
> > There are a lot of things that could go wrong and result in that kind of
> > problem. One of them is a failing ignition coil. I am sure others will
> > come up with more ideas.
> >
> > When you say the carburetor has been "gone over", does that mean a
> > complete disassembly, soaked in a tank of carburetor cleaner, all
> > passages reamed, and re-assembled with new parts? It seems that, unless
> > you do that these days, the stuff they are selling for gasoline will
> > cause all kinds of crud to form in the small passages/jets. (been there,
> > done that)
> >
> > Mike
> >
> > On 8/2/2011 6:42 PM, Jeff&  Ginny Pomije wrote:
> >> I have a Super C that I have been having a problem with for a couple
> >> years now.  It used to happen every great now and then, but now is
> >> becoming more frequent.  I'll start the tractor and go to work cutting
> >> hay, etc. and it runs fine.  After a while it starts to sputter.  I used
> >> to be able to rev up the engine and it would quit for a while.  More
> >> recently revving the engine does not help.  I have to choke the engine
> >> about half way out to get it to quit.  After awhile I may or may not be
> >> able to push the choke back in.  Lately choking is having less and less
> >> affect.
> >>
> >> I have had the tractor looked at by two different mechanics over the
> >> past couple years.  They cannot find anything wrong...the problem never
> >> happens when they are looking it over.  If I remove the fuel line from
> >> the carburetor, fuel runs out of the line.  So, no fuel problem at that
> >> point.  The carburetor has been gone over.  I'm not much of a mechanic,
> >> but I am looking for things to try.
> >>
> >> Thanks,
> >>
> >> Jeff Pomije
> >> _______________________________________________
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> >>
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