Posted: 1/30/2016 3:44:51 PM EDT
| I have a Troy Bilt snow blower, just two years old, 4 cycle 123 cc OHV engine. It will start great, run fine in choke but as soon as I move it to run it cuts out immediately. Now, I admit, I completely forgot to drain the gas from the prior season. The engine probably has no more than 5-6 hours on it total. Thanks. |
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I have a Troy Bilt snow blower, just two years old, 4 cycle 123 cc OHV engine. It will start great, run fine in choke but as soon as I move it to run it cuts out immediately. Now, I admit, I completely forgot to drain the gas from the prior season. The engine probably has no more than 5-6 hours on it total. Thanks. Change gas, clean carb, check plug and Air filter. That's where I'd start, but I'm no expert. |
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Quoted: This isn't a ethanol problem. Pure gas will varnish a carb the same as blended gas. Quoted: Quoted: Damn Ethanol.. This isn't a ethanol problem. Pure gas will varnish a carb the same as blended gas. |
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Stop it, they like to pretend that small engines never had carburetor problems prior to e10. Quoted:
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Damn Ethanol.. This isn't a ethanol problem. Pure gas will varnish a carb the same as blended gas. Sorry I fell off the band wagon. To make up for my sin I will go start my 200 year old Briggs engine, if you sniff the exhaust on it you can smell the perfect factory crosshatch. |
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Quoted: Stop it, they like to pretend that small engines never had carburetor problems prior to e10. Quoted: Quoted: Quoted: Damn Ethanol.. This isn't a ethanol problem. Pure gas will varnish a carb the same as blended gas. Why is ethanol banned in aviation gasoline? Because of the water issue. |
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E10 causes the problem because it attracts water. One bowl of plain gasoline will not varnish a carburetor if left over a year. It took quite a few...of course carbs back then were simple. Now with all the EPA regs the carbs have very fine passages which are quite sensitive. Why is ethanol banned in aviation gasoline? Because of the water issue. Quoted:
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Damn Ethanol.. This isn't a ethanol problem. Pure gas will varnish a carb the same as blended gas. Why is ethanol banned in aviation gasoline? Because of the water issue. On a gravity feed system it's not just one bowl. It's the the entire tank slowly draining into the bowl and evaporating out the vent. Yes pure gas will gum a carb up in 1 year. I have cleaned a lot of old Tecumseh carbs that have the big passages and only filled with pure gas. |
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Quoted:
E10 causes the problem because it attracts water. One bowl of plain gasoline will not varnish a carburetor if left over a year. It took quite a few...of course carbs back then were simple. Now with all the EPA regs the carbs have very fine passages which are quite sensitive. Why is ethanol banned in aviation gasoline? Because of the water issue. Quoted:
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Damn Ethanol.. This isn't a ethanol problem. Pure gas will varnish a carb the same as blended gas. Why is ethanol banned in aviation gasoline? Because of the water issue. Stop it, people like to pretend that ethanol is Gods gift to the internal combustion small engine world. 
People can't explain why that s--t has to be mandated and forced onto us if it's so good. |
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Quoted: I have a Troy Bilt snow blower, just two years old, 4 cycle 123 cc OHV engine. It will start great, run fine in choke but as soon as I move it to run it cuts out immediately. Now, I admit, I completely forgot to drain the gas from the prior season. The engine probably has no more than 5-6 hours on it total. Thanks. I also cleared one or two simply by covering the intake of the carb with the filter off while it was running like crap. Remove hand just before it dies, and you might get a "pow" as the vacuum sucks the blockage through and suddenly it runs great. Also, depending what engine you have, check the plug. If you're able to, post the plug info here. I'm drawing a blank, but there was a plug series we constantly encountered were junk. Brand new mowers wouldn't run, or run like crap because of them. Even if they ran fine, we would replace them, because it likely wouldn't be fine for long. *Just remembered as I hit submit. RJ2. If it's an RJ2 plug, replace it with the RJ19 equivalent. |
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Quoted: Stop it, people like to pretend that ethanol is Gods gift to the internal combustion small engine world. People can't explain why that s--t has to be mandated and forced onto us if it's so good. Quoted: Quoted: Quoted: Quoted: Quoted: Damn Ethanol.. This isn't a ethanol problem. Pure gas will varnish a carb the same as blended gas. Why is ethanol banned in aviation gasoline? Because of the water issue. Stop it, people like to pretend that ethanol is Gods gift to the internal combustion small engine world. People can't explain why that s--t has to be mandated and forced onto us if it's so good. I practice no special maintenance for small engines. Nothing is drained. Nothing gets stabil. They all start fine after sitting over the winter. My generator had not been ran in 3 years, started in the first pull when I needed it this winter. My garden tiller is older than me ( I'm 36) and had never had any issues starting after the 2 years it sat. I will blame shitty manufacturing and the Chinese parts used in everything before I blame ethanol for small engine issues. |
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Myth #2: E10 attracts water, so it's important to install a water separator to prevent the water reaching the engine.
Mercury Marine, which recently hosted a Webinar on ethanol myths, noted that ethanol does not "grab water molecules out of the air." It is hydrophilic, which means ethanol holds water. With regular gasoline (E0) as well at E10, the primary cause of water collecting in tanks is condensation on tank walls. But unlike E0, which can absorb almost no moisture, E10 can hold up to half of one percent of water by volume, and the water molecules will dissolve in the fuel. The "solubilized" water will bypass the water separator and burn harmlessly through the engine. Only if phase separation were to occur would a water separator do its job, but by then the fuel itself would be the problem. The phase-separated water/ethanol mixture would settle on the bottom of the tank near the fuel pick-up and would quickly stall out or even damage your engine. And because ethanol is used to boost octane, the remaining (low-octane) gasoline at the top of the tank would also have the potential to damage your engine. Note, however, that a fuel filter (10-micron) is essential to keep gunk from reaching your engine. Ethanol is a solvent that dissolves resins, rust, and dirt that have accumulated on older tank walls. Especially when you first make the transition to E10, it's important to carry spare filters and a galvanized bucket to store used filters prior to disposal. Even in new engines and tanks, E10 will sometimes form a mysterious gooey substance that will also clog filters. Richard Kolb, the manager of Emissions and Regulations for Volvo Penta, believes the goo is caused by water mixing with one or more of the 108 approved compounds that can be used in gasoline. These compounds vary among suppliers, so one solution is to change to a different brand of gasoline. Another is to use carburetor cleaner, which he says has sometimes remedied the problem. |
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Quoted: On a gravity feed system it's not just one bowl. It's the the entire tank slowly draining into the bowl and evaporating out the vent. Yes pure gas will gum a carb up in 1 year. I have cleaned a lot of old Tecumseh carbs that have the big passages and only filled with pure gas. Quoted: Quoted: Quoted: Quoted: Quoted: Damn Ethanol.. This isn't a ethanol problem. Pure gas will varnish a carb the same as blended gas. Why is ethanol banned in aviation gasoline? Because of the water issue. On a gravity feed system it's not just one bowl. It's the the entire tank slowly draining into the bowl and evaporating out the vent. Yes pure gas will gum a carb up in 1 year. I have cleaned a lot of old Tecumseh carbs that have the big passages and only filled with pure gas. |
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Quoted: Myth #2: E10 attracts water, so it's important to install a water separator to prevent the water reaching the engine. Mercury Marine, which recently hosted a Webinar on ethanol myths, noted that ethanol does not "grab water molecules out of the air." It is hydrophilic, which means ethanol holds water. With regular gasoline (E0) as well at E10, the primary cause of water collecting in tanks is condensation on tank walls. But unlike E0, which can absorb almost no moisture, E10 can hold up to half of one percent of water by volume, and the water molecules will dissolve in the fuel. The "solubilized" water will bypass the water separator and burn harmlessly through the engine. Only if phase separation were to occur would a water separator do its job, but by then the fuel itself would be the problem. The phase-separated water/ethanol mixture would settle on the bottom of the tank near the fuel pick-up and would quickly stall out or even damage your engine. And because ethanol is used to boost octane, the remaining (low-octane) gasoline at the top of the tank would also have the potential to damage your engine. Note, however, that a fuel filter (10-micron) is essential to keep gunk from reaching your engine. Ethanol is a solvent that dissolves resins, rust, and dirt that have accumulated on older tank walls. Especially when you first make the transition to E10, it's important to carry spare filters and a galvanized bucket to store used filters prior to disposal. Even in new engines and tanks, E10 will sometimes form a mysterious gooey substance that will also clog filters. Richard Kolb, the manager of Emissions and Regulations for Volvo Penta, believes the goo is caused by water mixing with one or more of the 108 approved compounds that can be used in gasoline. These compounds vary among suppliers, so one solution is to change to a different brand of gasoline. Another is to use carburetor cleaner, which he says has sometimes remedied the problem. |
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If the dew point of the air is close to ambient, the ethanol WILL grab water from the air. Seen it happen before my eyes in a Pyrex beaker. The fuel becomes cloudy within minutes and within hours, phase separation. Most of the ethanol is now a sediment on the bottom which will cause poor running. Left to age, it becomes a slime that only acetone will dissolve. Quoted:
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Myth #2: E10 attracts water, so it's important to install a water separator to prevent the water reaching the engine. Mercury Marine, which recently hosted a Webinar on ethanol myths, noted that ethanol does not "grab water molecules out of the air." It is hydrophilic, which means ethanol holds water. With regular gasoline (E0) as well at E10, the primary cause of water collecting in tanks is condensation on tank walls. But unlike E0, which can absorb almost no moisture, E10 can hold up to half of one percent of water by volume, and the water molecules will dissolve in the fuel. The "solubilized" water will bypass the water separator and burn harmlessly through the engine. Only if phase separation were to occur would a water separator do its job, but by then the fuel itself would be the problem. The phase-separated water/ethanol mixture would settle on the bottom of the tank near the fuel pick-up and would quickly stall out or even damage your engine. And because ethanol is used to boost octane, the remaining (low-octane) gasoline at the top of the tank would also have the potential to damage your engine. Note, however, that a fuel filter (10-micron) is essential to keep gunk from reaching your engine. Ethanol is a solvent that dissolves resins, rust, and dirt that have accumulated on older tank walls. Especially when you first make the transition to E10, it's important to carry spare filters and a galvanized bucket to store used filters prior to disposal. Even in new engines and tanks, E10 will sometimes form a mysterious gooey substance that will also clog filters. Richard Kolb, the manager of Emissions and Regulations for Volvo Penta, believes the goo is caused by water mixing with one or more of the 108 approved compounds that can be used in gasoline. These compounds vary among suppliers, so one solution is to change to a different brand of gasoline. Another is to use carburetor cleaner, which he says has sometimes remedied the problem. So make sure its sealed when its 100% humidity out? If it was absorbed through the air in the way you described wouldn't clear gas take on water also? If so you would want some ethanol so it can be absorbed as clear gas just cant absorb nearly as much water before it phase separates. |
| If it has a pilot system the jet is plugged. That carb may only have one circuit in it though. It needs a cleaning. Drain the bowl before you park it or add stabil and hope for the best. Some very sensitive to this. The FCR in my KTM will need a cleaning in as little as 3 weeks sitting with ethanol gas in it in a humid environment. My dad's Honda generator? It don't give a fuck. |
| If it is only 4 years old, it may not even have a bowl. Many of the newer carbs have a flat plate you can remove on the carb. Behind that plate is a gasket with little flapper valves on it. They get stuck. Usually, on mine, I can just unstick the gasket from the housing. coat it with a little oil, replace it and all is well! |