[AT] Cub problem

[Stephen Offiler]

Excellent point, Bo.  Misdiagnosis is like a tax on the person doing the
work, a very efficient tax that goes 100% to subsidize the replacement
parts industry.  Think about how many parts are sold needlessly due to
misdiagnosis.  No way to ever know the number but I bet it's big, like 10%
or even 20% of all replacement parts sold.

SO

On Fri, May 13, 2016 at 9:15 AM, Bo Hinch <bohinch at gmail.com> wrote:

> Several years ago a distance friend was having trouble with a ford 2000
> that was a real problem as it started in early winter and while putting out
> hay would always act up about the time he had to drive thur a bad spot and
> some times would bog down as the tractor would run so bad . He had the
> carburetor rebuilt and it seamed to help ( for a little while) , and then
> got worse again . He bought a NEW carburetor , installed it and still had
> the same problem . I went and checked it early one cold ( 38*) morning and
> first thing I checked was the POINTS . The platinum had become unsoldered
> and was just floating around and not making good contact . Replace both
> points and condenser which solved his problems . A lot of money was spent
> for nothing because of misdiagnosis . Live and Learn .
>
> On Fri, May 13, 2016 at 6:38 AM, Cecil Bearden <crbearden at copper.net>
> wrote:
>
> > If you ran the cheap unleaded gas in it, then I would bet there are some
> > white flakes of dried surfactant in the carburetor.  If the gas had any
> > ethanol ( as all of it has some, even the no ethanol ) then there is a
> > flake of rust in it.    I run only the highest grade of ethanol free
> > gasoline in all of my older engines that were built prior to unleaded
> > gas.   I think I have told the story before of having to use the high
> > grade of gas on my fire pumps to get them to meet the test
> > requirements.  I have lost a lot of small engine carburetors to ethanol
> > in the gas even  the no ethanol grade.  A little Marvel Mystery Oil
> > seems to help keep the ethanol from attaching the carburetor when it
> > dries out.    Unleaded low octane gas has a surfactant in it to make it
> > burn at a lower temperature for less emissions.  It seems counter
> > productive, but that's the EPA... The engine needs heat to operate
> > efficiently and the gas has water added to lower the heat content.   I
> > was told by a petroleum engineer that the white powder/flakes in the
> > carburetor left  when the gas evaporates is the surfactant  to make the
> > water mix... Ethanol just causes more water to be pulled from the air...
> >
> > I once had an Onan Generator with a 30 gal tank.  I had to run Methanol
> > in the gas to keep the carb from icing when running in the middle of the
> > night.  This was during the 2001 Ice Storm.   We ran for 27 days on
> > Generator.   I bought a diesel generator and sold the Onan.  The buyer
> > brought the generator back as it only ran one tank of gas through it
> > and then would not start.   Rust from had built up in the bottom of the
> > tank and blocked the fuel inlet.   The rust was very finely powdered.
> > The gas tank was completely dry from the methanol.  I connected a 1/2
> > inch pipe to my shop vacuum and sucked every bit of rust out of the
> > tank.  I then put a 1 inch long tubing in the fuel bowl inlet to stick
> > up in the tank and prevent water and sediment  from plugging up the fuel
> > line...
> >
> > Just my $0.02
> >
> > Cecil in OKla
> >
> >
> > On 5/12/2016 10:14 PM, Mike M wrote:
> > >
> > > On 5/12/2016 2:15 PM, Greg Hass wrote:
> > >> Am having trouble with my 1949 Farmall Cub. It sat from fall until
> about
> > >> April when I started it.
> > >>
> > > IT SAT.  If it had fuel in the carb, my money would bet on a fuel
> system
> > > issue. These carbs are so easy to pull apart, why not pull it and give
> > > it a good cleaning and blow out? Stop trying to find the the zebra in
> > > the room when the 900 lb gorilla is staring you in the face. Make sure
> > > all the orifices and jets are squeaky clean. Then check for crap
> > > floating around your fuel tank that could clog the screen if so
> equipped.
> > >
> > > Mike M
> > >>
> > >
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