Post by lain on Aug 30, 2016 2:18:16 GMT -5
My 92cc scoot with long case 139qmb engine has been suffering some overflow issues lately. When I ride it on a hot (
-
degrees) day and I have been running it for about 20 minutes or more, varied distances between just a few miles with lots of stop and go heavy city traffic, to about 12 miles or more with lots of WOT and mid range throttle when I come to a stop after going for that long in those different circumstances it will start to pour gas out the carb vent hose and even if I stop the engine will continue to pour out and also into the engine and out of the air filter as well until I turn the manual petcock off.
I felt like this might have been float related, and don't know of any other ideas, so I took apart the carb and inspected everything. All seemed to be in good order so I did a good cleaning and reassembled it, and it worked great for a couple days, got about 60-80 miles of use before it started acting up again doing the same exact thing.
Now after inspecting the parts, cleaning it and making it look nice and shiny inside and out, this problem still arises, but only on hot days, and also does not matter if I have a full or almost empty tank of gas (gravity fed tank above carb with manual petcock). I am stumped... I got to work just fine, rode it around the parking lot for about 45 minutes, and it is completely fine, but earlier in the day when it was about 88degrees outside it would NOT stop having issues...
So is it possible for floats to only have issues in certain ranges of heat maybe? OR maybe the float is going bad?
-
degrees) day and I have been running it for about 20 minutes or more, varied distances between just a few miles with lots of stop and go heavy city traffic, to about 12 miles or more with lots of WOT and mid range throttle when I come to a stop after going for that long in those different circumstances it will start to pour gas out the carb vent hose and even if I stop the engine will continue to pour out and also into the engine and out of the air filter as well until I turn the manual petcock off. I felt like this might have been float related, and don't know of any other ideas, so I took apart the carb and inspected everything. All seemed to be in good order so I did a good cleaning and reassembled it, and it worked great for a couple days, got about 60-80 miles of use before it started acting up again doing the same exact thing.
Now after inspecting the parts, cleaning it and making it look nice and shiny inside and out, this problem still arises, but only on hot days, and also does not matter if I have a full or almost empty tank of gas (gravity fed tank above carb with manual petcock). I am stumped... I got to work just fine, rode it around the parking lot for about 45 minutes, and it is completely fine, but earlier in the day when it was about 88degrees outside it would NOT stop having issues...
So is it possible for floats to only have issues in certain ranges of heat maybe? OR maybe the float is going bad?
* is a warm day in our part of the world, but would be considered a cool one in the south-western states. Have not read of scooters from there running gas all over......and I have run my scoot in 
+ degree temps without any trouble.(We've had 24 days over 
