Age Quod Agis
| You have goop in the carb, either in the jet in the venturi, the needle valve, or the diaphram. Pull it apart (very gently, there are tiny parts, and delicate membranes in there), and clean the hell out of it with carb cleaner or brake cleaner, and q-tips. You may also have a pin hole in either the primer bulb or fuel lines, or the fuel pick-up in the tank maybe dirty, but it's probably the carb. As MNSIG notes, it's running too lean, and when you go WOT with the choke open, you get too much air for the amount of fuel that the carb can deliver, you lose combustion, and it bogs out.
"I vowed to myself to fight against evil more completely and more wholeheartedly than I ever did before. . . . That’s the only way to pay back part of that vast debt, to live up to and try to fulfill that tremendous obligation."
Alfred Hornik, Sunday, December 2, 1945 to his family, on his continuing duty to others for surviving WW II.
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| | | Posts: 13085 | Location: Central Florida | Registered: November 02, 2008 | 
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| You running ethanol gas in it? Sounds like the problems I used to have before I went to all non-ethanol (i.e. pure) gas in my small equipment. Like the others noted, you have some sort of carb blockage. Likely time for either a carb rebuild or installation of a new carb.
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Guns are awesome because they shoot solid lead freedom. Every man should have several guns. And several dogs, because a man with a cat is a woman. Kurt Schlichter
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Security Sage
| As mentioned, get the goo/gel out of it.
RB
Cancer fighter (Non-Hodgkins Lymphoma) since 2009, now fighting Diffuse Large B-Cell Lymphoma.
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| quote: Originally posted by mark123:
I don't use ethanol in my mowing equipment.
Then my bet is you have some small debris blocking one of the orifices in the carb. Disassemble and clean, making sure to snake out all the orifices, throw in a $8 rebuild kit so you have all new gaskets and screens, and you should be good to go. 
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Guns are awesome because they shoot solid lead freedom. Every man should have several guns. And several dogs, because a man with a cat is a woman. Kurt Schlichter
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Just because something is legal to do doesn't mean it is the smart thing to do.
| Some people think I am goofy but I have good luck boiling carbs to clean them out. Pull the carb off, place it pot of clean water and let it boil for 20 or 30 mins. If the water is really dirty you might want to do it a second time. Blow it out and replace. My dad taught me that trick over 50 years ago. I have done it many times over the years.
Integrity is doing the right thing, even when nobody is looking.
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| | | Posts: 4324 | Location: Metamora MI | Registered: October 31, 2003 |
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| Before I pulled it apart I would pour some Marvell Mystery oil in the tank, shake to mix, and run it at half speed for a couple of minutes. This seems to clear out any number of carb varnish problems on small engines. Or you could pull it apart.....
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...welcome to the barnyard...some animals are more equal than others
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MAGA
| another problem that can creep up is an air leak somewhere in the crankcase, worn crankshaft seals were a popular leak source on the old 2 cycle Lawn Boy mowers. I had a Ryobi trimmer that the cylinder jug was held to the crankcase with 4 allen bolts, when they worked loose power was lost and required half choke to run. Snug them back down and it ran like new again.
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That rug really tied
the room together.
| Depending on what brand blower, you can often buy a brand new OEM carburetor for like $13. Only idiots rebuild carbs for $10, when a new one cost $13. How much use does this blower get? If its homeowner use, average size lot, then look at TruFuel or Powerfuel from home-depot. $5 a can, great stuff. The average homeowner would use less than 2 cans a year.
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Often times a very small man can cast a very large shadow
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| | | Posts: 6720 | Location: Floriduh | Registered: October 16, 2004 |
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Avoiding
slam fires
| quote: Originally posted by gjgalligan:
Some people think I am goofy but I have good luck boiling carbs to clean them out.
Pull the carb off, place it pot of clean water and let it boil for 20 or 30 mins. If the water is really dirty you might want to do it a second time. Blow it out and replace.
My dad taught me that trick over 50 years ago. I have done it many times over the years.
^^^ This works. I have a friend that works on small engines,He uses a sonic cleaner with a splash of simple green in it .He also uses boiling water to start the cycle. |
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Raptorman
| Fuel line could be rotten with a pinhole in it
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Eeewwww, don't touch it!
Here, poke at it with this stick.
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Troll
| I agree with the Seafoam idea.
I had a similar problem with generator.
It'd only run on half choke (fresh gasoline) so I added some Seafoam and slowly it start to run a little better, then it gradually started running properly with the choke pushed all the way in - the way it supposed to run.
Seafoam, it's what's for your carburetor. |
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| Did it just start doing this and was run recently before or has it been sitting? If it hasn’t been sitting and just started doing this, I would take a really good look at the primer ball and fuel lines as it might be sucking air in the fuel system. Also check the gasket between the carb and motor for an air leak. If none of the above and you’ve had a big temperature change, back the high speed fuel jet out 1/8-1/4 of a turn and see if it runs right.
If it’s been sitting like all winter, it’s most likely a blocked high speed jet in the fuel. Generally it’s cheaper to buy a new carb (a lot sell for $35 +/-) than to buy the rebuild kit and try to rebuild it, and a lot of times the passages are so small on these carbs you can’t get the crap cleaned totally out of them. |
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W07VH5
| quote: Originally posted by jimmy123x:
Did it just start doing this and was run recently before or has it been sitting? If it hasn’t been sitting and just started doing this, I would take a really good look at the primer ball and fuel lines as it might be sucking air in the fuel system. Also check the gasket between the carb and motor for an air leak. If none of the above and you’ve had a big temperature change, back the high speed fuel jet out 1/8-1/4 of a turn and see if it runs right.
If it’s been sitting like all winter, it’s most likely a blocked high speed jet in the fuel. Generally it’s cheaper to buy a new carb (a lot sell for $35 +/-) than to buy the rebuild kit and try to rebuild it, and a lot of times the passages are so small on these carbs you can’t get the crap cleaned totally out of them.
Hmmm, good call. The primer bulb is cracked. |
| | | Posts: 45775 | Location: Pennsyltucky | Registered: December 05, 2001 |
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