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Tecumseh 5hp engine wont stay running

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Steven G. Thomson

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Nov 3, 1996, 3:00:00 AM11/3/96
to

I have a three year old Troy Bilt 21" Snow Thrower with a Tecumseh 5.0 HP
engine. I was getting it ready for the season, and I took the fuel supply
hose off from the bottom of the tank and drained the fuel.

After refilling with fresh fuel, I tried to start the engine. I pumped the
primer and cranked it, but it would not start. I then drained the
carburetor sump, and found smelly, dark yellow fuel in the drain. I drained
it until the fresh fuel flowed.

I found the engine would start and run normally if I kept pumping the
primer button
rapidly, but will stall as soon as I stop.

I did add fuel stabilizer to the gasoline last winter, but suspect I should
have drained the fuel in the spring.

Any ideas would be appreciated!

--
Steven G. Thomson
Arnold, Missouri

Tony Mantler

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Nov 3, 1996, 3:00:00 AM11/3/96
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In article <01bbc9bb$37d20a40$c4ded8cd@steven>, "Steven G. Thomson"
<stho...@i1.net> wrote:

: I have a three year old Troy Bilt 21" Snow Thrower with a Tecumseh 5.0 HP

yes, you probably should have drained the fuel in the spring..

iirc the lead replacements in fuels these days have a habit of really
gumming up carburaters when left sitting for extended periods (the exact
length of time escapes me at the moment)

dark yellow fuel in the drain is certainly not a good sign. if it were my
snowblower I would clean out the carb. (it might not cure the problem, but
that's what I'd do)

--
Tony Mantler Aka: Österizer, Willin' Enable, and Eek e...@escape.ca
Winnipeg, Manitoba, Canada http://www.escape.ca/~eek

john a dalton

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Nov 3, 1996, 3:00:00 AM11/3/96
to Steven G. Thomson

Steven G. Thomson wrote:
>
> I have a three year old Troy Bilt 21" Snow Thrower with a Tecumseh 5.0 HP
> engine. I was getting it ready for the season, and I took the fuel supply
> hose off from the bottom of the tank and drained the fuel.
>
> After refilling with fresh fuel, I tried to start the engine. I pumped the
> primer and cranked it, but it would not start. I then drained the
> carburetor sump, and found smelly, dark yellow fuel in the drain. I drained
> it until the fresh fuel flowed.
>
> I found the engine would start and run normally if I kept pumping the
> primer button
> rapidly, but will stall as soon as I stop.
>
> I did add fuel stabilizer to the gasoline last winter, but suspect I should
> have drained the fuel in the spring.
>
> Any ideas would be appreciated!
>
> --
> Steven G. Thomson
> Arnold, Missouri


steven...there is a small screen on the end of the hose that goes inside
the tank...it is clogged up...regards...john...

da...@cris.com

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Nov 4, 1996, 3:00:00 AM11/4/96
to

>: I have a three year old Troy Bilt 21" Snow Thrower with a Tecumseh 5.0 HP

>: engine. I was getting it ready for the season, and I took the fuel supply
>: hose off from the bottom of the tank and drained the fuel.
>:
>: After refilling with fresh fuel, I tried to start the engine. I pumped the
>: primer and cranked it, but it would not start. I then drained the
>: carburetor sump, and found smelly, dark yellow fuel in the drain. I drained
>: it until the fresh fuel flowed.
>:
>: I found the engine would start and run normally if I kept pumping the
>: primer button
>: rapidly, but will stall as soon as I stop.
>:
>: I did add fuel stabilizer to the gasoline last winter, but suspect I should
>: have drained the fuel in the spring.

>yes, you probably should have drained the fuel in the spring..

>iirc the lead replacements in fuels these days have a habit of really
>gumming up carburaters when left sitting for extended periods (the exact
>length of time escapes me at the moment)

>dark yellow fuel in the drain is certainly not a good sign. if it were my
>snowblower I would clean out the carb. (it might not cure the problem, but
>that's what I'd do)

Agree. Pull the carb and clean w/a good carb cleaner or laquer
thinner. Let soak for a while also before the actual cleaning.
Did this routinely on many motorcycle carbs.

Danny
da...@cris.com


JB

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Nov 5, 1996, 3:00:00 AM11/5/96
to

In article <55jrua$b...@herald.concentric.net>, da...@cris.com says...

>
>>: I have a three year old Troy Bilt 21" Snow Thrower with a Tecumseh 5.0
H
>P
>>: engine. I was getting it ready for the season, and I took the fuel
suppl
>y
>>: hose off from the bottom of the tank and drained the fuel.
>>:
>>: After refilling with fresh fuel, I tried to start the engine. I pumped
t
>he
>>: primer and cranked it, but it would not start. I then drained the
>>: carburetor sump, and found smelly, dark yellow fuel in the drain. I
drai
>ned
>>: it until the fresh fuel flowed.
>>:
>>: I found the engine would start and run normally if I kept pumping the
>>: primer button
>>: rapidly, but will stall as soon as I stop.


I was a small engine tech for years and I'll save you alot of trouble.
Pull that bolt back out of the bowl, you know the one that you set aside
when you cleaned the bowl. Look closely at it and you will see a very
small hole in the side of it. This is the main jet. Clean the hole out and
put it back together. That was easy now wan't it? That'll be $35.00.
--
Jordan Blessing L1 Master Tech


Shawn Walsh

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Nov 6, 1996, 3:00:00 AM11/6/96
to

Steven G. Thomson wrote:
>
> I have a three year old Troy Bilt 21" Snow Thrower with a Tecumseh 5.0 HP
> engine. I was getting it ready for the season, and I took the fuel supply
> hose off from the bottom of the tank and drained the fuel.
>
> After refilling with fresh fuel, I tried to start the engine. I pumped the
> primer and cranked it, but it would not start. I then drained the
> carburetor sump, and found smelly, dark yellow fuel in the drain. I drained
> it until the fresh fuel flowed.
>
> I found the engine would start and run normally if I kept pumping the
> primer button
> rapidly, but will stall as soon as I stop.
>
> I did add fuel stabilizer to the gasoline last winter, but suspect I should
> have drained the fuel in the spring.
>
> Any ideas would be appreciated!
>
> --
> Steven G. Thomson
> Arnold, Missouri

As an ex-northener, I can give you a couple pieces of advice: Always
drain your gas at the end of the season! Yes, gas stabilizers do help,
but, if the stabilizer doesn't make it to the carb, it is usless.
Second, dry gas! I had a carb freeze up on me several times from
moisture in the gas.
It sounds like you have a clog somewhere in the fuel line. The primer
does a good job forcing the gas through, but the carb and engine just
don't have the umph. Get out the 'ole STP (carb/injector cleaner)!
About a half bottle to the 1.5 gallon tank should give a strong enough
concentration. You'll have to do that primer thing though, at least to
keep it running long enough to get the mixture through the lines. Good
luck! Oh, by the way, the snow blower I had was a Tecumseh also, but no
electric start (ouch in the shoulder area!) When it ran, it was a
beast! When it ran......

Shawn

BELJAN E

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Nov 7, 1996, 3:00:00 AM11/7/96
to
Marvel Mystery Oil, 8 oz in the tank at each fillup, then if you ever
get stuck, your carb will be sparkling clean. Also if you add a
stabilizer, add it and run if for a few min to circulate it in.

Message has been deleted

Allan Thomas

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Nov 8, 1996, 3:00:00 AM11/8/96
to

You might want to check your gas cap's vent hole. I have a snowblower
with a tecumseh engine and had the very same problem. Only I didn't
discover the correct fix until I had completely tore the carbureter
apart.

Allan


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