[AT] OT - JD STX38 fuel problems - Update

Tue May 18 17:49:07 PDT 2004

It doesn't take but about one drop of water to clog some filters so they
want pass gas. This is from experience!

Thanks,
Robert Mull
Woodstock, Georgia
----- Original Message ----- 
From: "Mike S Meulenberg" <msm10301 at juno.com>
To: <at at lists.antique-tractor.com>
Sent: Tuesday, May 18, 2004 8:25 PM
Subject: Re: [AT] OT - JD STX38 fuel problems - Update

> Last night when I was experiencing the problem, I pulled the fuel line
> off before the filter, and I had good flow. I dribbled gas into the
> filter to fill it up thinking maybe it was a vapor lock type situation.
> After mowing a while more, I noticed the filter was dry again. This time
> the mower didn't die but it had to be close because I couldn't even see
> the gas trickling in with the engine running. Tonight I went out, and the
> filter was full again. I did fish a little piece of leaf out of the tank,
> but that doesn't explain why I had good flow from the tank last night.
> Here's an update to answer some of the posts:
>
> - running with the cap off - no change
> - filter is fine, and has only had about 2 gallons of gas through it
> - shutoff valve is open, and the filter is pointed in the right direction
> - I must have an older model because I don't have a solenoid on the carb
> - It is a gravity feed system, no pump
> - Bowl on the carb is clean
>
> Any more ideas? I'm hoping it was that little leaf, but it doesn't make
> sense.
>
> Thanks,
> Mike
>
>
> On Mon, 17 May 2004 22:21:01 -0700 "Dean VP" <deanvp at att.net> writes:
> > Mike:
> >
> > I'm a little confused now. Previously you mentioned the fuel flow
> > before the
> > filter was dribbling and the filter was dry, I must have
> > misunderstood. Is
> > this a gravity feed system? Or is there a fuel pump involved? I have
> > the
> > parts catalog on the STX38. It looks like gravity feed to me.
> >
> > Here are some more things to check.
> >
> > 1.) Is gasoline cap good?
> > 2.) Has the new in-line gas filter plugged up again?
> > 3.) Is the shutoff valve completely open? Key 14 on page C22 of the
> > parts
> > book
> > 4.) What does the solenoid do in the carburetor bowl? Does this just
> > let
> > fuel flow when the switch is on? Doesn't look like a pump. Is this
> > solenoid
> > acting up? Wiring loose or corroded? This may be where the problem
> > is. Is
> > the carburetor bowl clean inside?
> >
> >
> > Dean A. Van Peursem
> > Snohomish, WA 98290
> >
> > What people can dream, people can do! George W. Bush
> >
> > www.deerelegacy.com
> >
> > http://members.cox.net/classicweb/email.htm
> >
> >
> >
> >
> > -----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: Monday, May 17, 2004 9:47 PM
> > To: at at lists.antique-tractor.com
> > Subject: Re: [AT] OT - JD STX38 fuel problems
> >
> > OK, here's what I've done so far, and still the problem persists:
> > - removed the tank, and flushed it several times to be sure it's
> > clean.
> > The first time I did it, I found a piece of
> >    leaf that I was sure was causing the problem.
> > - replaced the fuel line and filter, and blew everything out with
> > compressed air.
> > - after the occurrence tonight, I pulled the fuel line just before
> > the
> > filter, fuel flow was fine.
> > - it seems like the engine/carburetor doesn't have enough pull to
> > suck
> > the gas through the fuel filter.
> > Any ideas??
> > Thanks,
> > Mike
> >
> > On Mon, 17 May 2004 21:01:44 -0700 "Dean VP" <deanvp at att.net>
> > writes:
> > > Mike:
> > >
> > > There is a possibility that there is some junk in the tank that is
> > > partially
> > > blocking the fuel line prior to the filter. One way to check this
> > > out is to
> > > blow air pressure backwards through the fuel line towards the tank
> >
> > > prior to
> > > the fuel filter. That will clean it out temporarily but if you
> > have
> > > junk in
> > > the tank it will eventually plug again. But if blowing the line
> > > clean
> > > changes how long it runs then you have a pretty good indicator you
> >
> > > have a
> > > dirty gas tank. Could be a plugged cap as John mentions or could
> > be
> > > a
> > > collapsed or crimped fuel line, but I'm betting on junk in the
> > tank.
> > >
> > >
> > > Dean A. Van Peursem
> > > Snohomish, WA 98290
> > >
> > > What people can dream, people can do! George W. Bush
> > >
> > > www.deerelegacy.com
> > >
> > > http://members.cox.net/classicweb/email.htm
> > >
> > >
> > >
> > >
> > > -----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: Monday, May 17, 2004 8:36 PM
> > > To: at at lists.antique-tractor.com
> > > Subject: [AT] OT - JD STX38 fuel problems
> > >
> > > Hi All,
> > > I recently bought a little JD STX38 to cut my lawn. I have a
> > problem
> > > with
> > > it running out of fuel in the fuel line even though the tank is
> > > full. I
> > > replaced the fuel filter after I bought the tractor, and after
> > that
> > > it
> > > would run out of fuel after 5-10 minutes of mowing. I thought I
> > > solved
> > > the problem by filling the filter with fuel, thinking it was like
> > a
> > > vapor
> > > lock. I mowed a couple times after that with no trouble. Now
> > tonight
> > > the
> > > problem reared it's head again. The filter is dry as can be, and
> > the
> > > gas
> > > only dribbles into the filter. Any thoughts as to what might be
> > > going on
> > > would be appreciated.
> > >
> > > Regards,
> > > Mike
> > > _______________________________________________
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> > >
> > >
> > >
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