[AT] OT - JD STX38 fuel problems

[Larry D. Goss]

That's a good question, Mike.  You probably can't tell by looking at
them.  

This discussion reminds me of the research on filtration that was going
on at Oklahoma State around 35 years ago.  Ernie Fitch was the senior
faculty/researcher at the time, but I doubt that he's still around.
Ernie was doing lots of research in the late 60's on the effectiveness
of hydroclones as a substitute for more commonplace filtration
techniques.  At the time, they were using Mobil 5W as the vehicle for
the experiments.  After polluting it with some "standard" materials,
Ernie would run it through a hydroclone and end up with oil that was
cleaner than when it came from the factory.  They didn't have any use
for the oil after it had been used, so ended up throwing it away by the
barrelful.  It made pretty good hydraulic fluid.

Larry

-----Original Message-----
From: at-bounces at lists.antique-tractor.com
[mailto:at-bounces at lists.antique-tractor.com] On Behalf Of Mike S
Meulenberg
Sent: Thursday, May 20, 2004 5:05 PM
To: at at lists.antique-tractor.com
Subject: Re: [AT] OT - JD STX38 fuel problems

How do I determine a "real" filter from a hardware store filter? I
bought
mine at NAPA, but it didn't say what it was rated for or to be used on.
Mike

On Thu, 20 May 2004 08:31:49 -0500 "Easley, Greg"
<EasleyG at health.missouri.edu> writes:
> Are you using one of those see-through plastic filters that come
> in a blister-pack at the hardware store?  If so, get rid of it
> and install a real filter from the auto parts store.  I tried
> those plastic filters on the VACuum and had no end of grief.
> I went through three or four of the stupid things.  Installed
> a real filter and the fueling problems magically vanished.
> 
> The symptom you describe of the filter going dry while running,
> then filling up after sitting for awhile are exactly what I saw.
> 
> Greg
> http://www.geocities.com/heartland/woods/1416
> 
> 
> -----Original Message-----
> From: at-bounces at lists.antique-tractor.com
> [mailto:at-bounces at lists.antique-tractor.com] On Behalf Of Mike S
> Meulenberg
> Sent: Wednesday, May 19, 2004 10:42 PM
> To: at at lists.antique-tractor.com
> Subject: Re: [AT] OT - JD STX38 fuel problems
> 
> 
> I mowed again tonight, and here's what I observed:
> 1. When I last left the mower the filter was empty and the shutoff 
> was
> open, when I looked tonight
>      the filter was full.
> 2. After mowing for a while the filter was empty, but it didn't 
> quit. 3.
> About 3 hours after mowing the filter was again full.
> 
> 
> I'm beginning  to wonder if the fuel filter is providing too much
> resistance to flow for a little mower without a fuel pump. Maybe the
> paper cartridge is too restrictive. I will check the carb again to 
> look
> for any signs of the float sticking.
> 
> Thanks,
> Mike
> 
> _______________________________________________
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> 
> 
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