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Joined: Jan 2010
Posts: 23,578 Likes: 2
Campfire Ranger
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OP
Campfire Ranger
Joined: Jan 2010
Posts: 23,578 Likes: 2 |
Pulled the snowblower out last week and attempted to start it today.
if it sits for a few minutes, it will start up and run for about 10 seconds, then die.
First I made sure there was good gas flow to the carb - no issues there. I also put in a new spark plug just for the hell of it.
Then I took the carb apart - this one doesn't have any jets you can remove (as far as I can tell). At any rate, I cleaned it up and blew compressed air thru the main line. Put it back together, same deal.
Took the carb apart again and I noticed the bowl was pretty much dry, so I took the float out , cleaned it up - without the float pin - whatever that doohicky is called - gas will flow thru in a stream , but when I put it back in with the float assembled it just a few drips. I'm not sure if that's correct or not but it seems to be the problem.
I screwed around with it a few more times and decided I'd just reassemble the carb without the float - and bingo - snowblowers runs great, but about 20 seconds after I stop it, gas is pouring out the carb of course.
Doesn't seem that complicated but I can't seem to find the sweet spot - the float is plastic and there is no way to adjust it.
I had another carb laying around that had a deeper bowl that fit, so I cannibalized it - it did help a bit - the motor would run for about 35-40 seconds, then it would eventually starve itself of gas again.
I gave up and ordered a replacement carb to be here on Monday, but I don't understand why I can't get this float to work like it used to.
have you paid your dues, can you moan the blues, can you bend them guitar strings
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Joined: Nov 2006
Posts: 10,824 Likes: 1
Campfire Outfitter
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Campfire Outfitter
Joined: Nov 2006
Posts: 10,824 Likes: 1 |
Carburetors are why fuel injection was invented
Mathew 22: 37-39
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Joined: May 2016
Posts: 60,775 Likes: 51
Campfire Kahuna
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Campfire Kahuna
Joined: May 2016
Posts: 60,775 Likes: 51 |
Aint got no gas in it mmmm hmmmmm.
I am MAGA.
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Joined: Apr 2008
Posts: 17,198 Likes: 7
Campfire Ranger
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Campfire Ranger
Joined: Apr 2008
Posts: 17,198 Likes: 7 |
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Joined: Feb 2005
Posts: 4,436
Campfire Tracker
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Campfire Tracker
Joined: Feb 2005
Posts: 4,436 |
Your float needle is sticking.......open and closed.
Clean the passage the needle slides in, as well as the gas line intake.
Replace gas line also.
"Those that think they know everything are annoying those of us that have Google." - Dr. D. Edward Wilkinson
Note to self: Never ask an old Fogey how he is doing today. Revised note to self: Keep it short when someone asks how I am doing.
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Joined: Feb 2011
Posts: 26,389 Likes: 6
Campfire Ranger
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Campfire Ranger
Joined: Feb 2011
Posts: 26,389 Likes: 6 |
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Joined: Jun 2016
Posts: 9,679 Likes: 5
Campfire Outfitter
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Campfire Outfitter
Joined: Jun 2016
Posts: 9,679 Likes: 5 |
What brand & size is the motor. I'd like to look at a float pic if I can find one.
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Joined: Aug 2004
Posts: 69,737 Likes: 32
Campfire Kahuna
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Campfire Kahuna
Joined: Aug 2004
Posts: 69,737 Likes: 32 |
Another gift from the ethanol department.
Molɔ̀ːn Labé Skýla!
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Joined: Sep 2014
Posts: 21,918 Likes: 7
Campfire Ranger
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Campfire Ranger
Joined: Sep 2014
Posts: 21,918 Likes: 7 |
Try leaving the gas cap off. Vent shouldn't have an effect that quick, but its an easy try.
Probably as others said, sticky needle.
Parents who say they have good kids..Usually don't!
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Joined: Dec 2003
Posts: 86,325 Likes: 31
Campfire Oracle
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Campfire Oracle
Joined: Dec 2003
Posts: 86,325 Likes: 31 |
If you take the time it takes, it takes less time. --Pat Parelli
American by birth; Alaskan by choice. --ironbender
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Joined: Jan 2010
Posts: 23,578 Likes: 2
Campfire Ranger
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OP
Campfire Ranger
Joined: Jan 2010
Posts: 23,578 Likes: 2 |
I did leave the gas cap off, but either way, I am getting good flow.
I don't have a wire to clean the jets but I'll get one tomorrow. The new carb arrives tomorrow as well. I hope I have better luck
I quit for the night. I smell like gas and I'm hungry.
FWIW, the carb is a Briggs & Stratton 798917
Last edited by KFWA; 11/28/20.
have you paid your dues, can you moan the blues, can you bend them guitar strings
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Joined: Mar 2001
Posts: 12,162
Campfire Outfitter
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Campfire Outfitter
Joined: Mar 2001
Posts: 12,162 |
Also put a fuel shutoff valve in the line. Before storing it close the shutoff valve and run it until it quits. That'll cure 99% of the gummed carburetor problems like the one you have.
Carburetors are of the devil.
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Joined: Oct 2011
Posts: 59,236 Likes: 37
Campfire Kahuna
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Campfire Kahuna
Joined: Oct 2011
Posts: 59,236 Likes: 37 |
Your float needle is sticking.......open and closed.
Clean the passage the needle slides in, as well as the gas line intake.
Replace gas line also. This! Replace the needle as well I've seen the tips swollen up from Ethanol. Start using Recreational fuel in all your small engine stuff as well.
Paul
"I'd rather see a sermon than hear a sermon".... D.A.D.
Trump Won!, Sandmann Won!, Rittenhouse Won!, Suck it Liberal Fuuktards.
molɔ̀ːn labé skýla
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Joined: Aug 2010
Posts: 2,332
Campfire Regular
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Campfire Regular
Joined: Aug 2010
Posts: 2,332 |
Go find ethanol free gas and only run that stuff
“Lighten up Francis”
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Joined: Dec 2004
Posts: 9,743 Likes: 15
Campfire Outfitter
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Campfire Outfitter
Joined: Dec 2004
Posts: 9,743 Likes: 15 |
Most all the small motors today are listed on Amazon for replacement carb, air filter and fuel filter kit for under 20 bucks I've done my mower, pressure washer and one chain saw recently. Not even worth looking at twice, just order the new carburetor. Just for example $15.96640084B Carburetor for Tecumseh 5HP MTD 632107A 632107 640084 640084A TORO 521 Snow Blower HSSK40 HSSK50 HS50 LH195SA - Tecumseh 632107 640084 640105 640299 632107A 640084A 4 & 5 HP Engines Carburetor
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Joined: Nov 2005
Posts: 1,673
Campfire Regular
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Campfire Regular
Joined: Nov 2005
Posts: 1,673 |
Probably not your issue but something to watch for that causes a lot of problems. Ethanol gas really messes with the fuel lines. Everything can look good but the ethanol will soften the lines causing them to collapse.
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Joined: Apr 2004
Posts: 42,912 Likes: 12
Campfire 'Bwana
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Campfire 'Bwana
Joined: Apr 2004
Posts: 42,912 Likes: 12 |
I started putting a value on my time screwing with stuff like that...
$15 for a new carb is pretty cheap... normally they were like $35 to $50....
As said above, I'd start to blame that on ethanol...
I quick using ethanol, and any gas station gas period...I even think the high dollar non ethanol fuel is usually ethanol any way.. because using that stuff at $4.50 a gallon, I was still having the same issues constantly... pasty stuff floating in the bottom of the Carb bowl...
I have started going over to the local Airport, and buying AV GAS... its $4.50 a gallon also.. but its 100 octane and there is NOT any Alcohol snuck in there.....buy it 5 gallons at a time...
haven't had one issue with any power equipment I use, and this property requires quit a bit of them to keep it up....
Figure a value on my time.. and $4.50 a gallon with no problems is cheaper than paying $2.50 a gallon and having to take the carb off and clean 4 or 5 times just during the life span of a gallon of pump gas...
"Minus the killings, Washington has one of the lowest crime rates in the Country" Marion Barry, Mayor of Wash DC
“Owning guns is not a right. If it were a right, it would be in the Constitution.” ~Alexandria Ocasio Cortez
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Joined: Apr 2004
Posts: 42,912 Likes: 12
Campfire 'Bwana
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Campfire 'Bwana
Joined: Apr 2004
Posts: 42,912 Likes: 12 |
for cleaning out jets in a Briggs Carb.. I find using a paper clip, normally works real well....
Replacing fuel lines is also pretty cheap, vs trying to clean them.
"Minus the killings, Washington has one of the lowest crime rates in the Country" Marion Barry, Mayor of Wash DC
“Owning guns is not a right. If it were a right, it would be in the Constitution.” ~Alexandria Ocasio Cortez
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Joined: Dec 2016
Posts: 3,770 Likes: 1
Campfire Tracker
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Campfire Tracker
Joined: Dec 2016
Posts: 3,770 Likes: 1 |
Another gift from the ethanol department. ^ ^ ^ ^
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Joined: Dec 2016
Posts: 3,770 Likes: 1
Campfire Tracker
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Campfire Tracker
Joined: Dec 2016
Posts: 3,770 Likes: 1 |
Just me- I don't leave fuel in any small engine equipment or outboard or motorcycle etc. anymore I'll not try to start anything until I can flush the tank and drain the carburetor if possible. Trying to turn it over just forces bad gas and trash into those tiny passages and makes for a BFM
Gas is crap anymore and I haven't had any luck with treatments the last few decades I quit trying to store a supply of gasoline some time back. If it even seems the least bit rotten it gets disposed of and I'll buy fresh
Last edited by Ranger99; 11/28/20.
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