It appears that the float valve had dirt in it (no doubt since there is no fuel filter) cleaned out getting ready to try again but what would be the recommended float angle and clearance from actuator to the needle valve? how much fuel should be in the bowl? I am pretty certain that the float valve was stuck open since the fuel would just find every way to leak out of the carb after it runs for a bit. I put a new fuel line on it as well as clamps. I also inspected for cracks and torn gaskets for which i found none.
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it may be due to a few things like:
1. The needle valve or its seat is worn. You have to change it as a set. This involves opening up the carb.
2. There may be some debris or varnish between the mating surface of the needle valve and seat which also requires opening up the carb and cleaning with carb cleaner.
3. You carb float level setting may be incorrect. You have to know the float height from the manual and then have it adjusted. There is usually a small metal under the float which is used for float height adjustment.
4. Your carb float may be stuck and this usually happens when the bike is on its side stand and not used for a long time.
hi this is the carb overflowing, normaly due to float valve sticking, turn of fuel, if you can remove the float chamber by losening the carb mounting clips enough to alow you to twist the carb and undo the retaining screws, remove the bowl, and carefully remove the securing pin from the float, becarefull not to loose the small needle valve from under the float, this turnes of the fuel when it gets to the corect height, check the small valve for wear or dirt which may have become stuck under it , clean and replace in reverse order maybe cleaning it will solve the problem, poss check condition of fuel filter
you need to remove carb., take off fuel bowl. float should be held in place with small pin, remove pin, float and needle valve. clean needle, needle bore with carb cleaner. inspect needle seat and tip for any dirt/debris. install needle float as assembly, then check float adjustment height
The most likely cause is dirt or other contaminants causing the float valves to hang open and the carbs to overflow. This would be especially true if the bike has been sitting for more than just a couple of months.
You can first try draining the fuel from each float bowl and see if that stops the overflowing. Turn the fuel petcock off and then loosen the drain screw on the bottom of each float bowl. Turn the petcock back on and see if the problem persists.
If so, you're going to have to remove each float bowl and carefully remove and clean each float valve. Also clean the bowls while they're off. Cleanliness is critical - so clean everything before reassembly.
If the bike has been sitting for an extended period of time, this would also be a good time to clean all of the fuel varnish and other crud that is very likely clogging the carburetor jets.
Air filter needs to be installed and clean. Check the seal at the carb,for tears or loose clamps.Also make sure fuel filter is cleaned out or replaced(dirt trash or water will stop fuel flow). If fuel pump is electric fuses may need replacement. If you still dont get better results you may need carbs cleaned.Not just add cleaner to gas,but removed and debris removed from jets float valve seat or filters inside.
Sticky float needle valve probably caused by dirt from the fuel / tank or accumulated fuel gum build up. Try tapping the float chamber. Failing that pull the float bowl off and carefully clean/ flush with carb cleaner spray.
sounds like you have a dirty and/or sticking float in the carb. Obviously you have gas flowing out of the tank. but not from carb to engine. This engine is used in dirt so the fuel system is especially suseptible to dirt, especially if you haven't changed your air filter very much. Easy easy and inexpensive fix...usually free if you have some basic tools. Remove the bottom of the float bowl (and be prepared to shut fuel off) and look in the bottom of it. If you can see visible dirt then clean out your carb with some good carb cleaner. The float should fall freely to the down position and fuel should be coming out as it is a gravity feed system (since you said hose goes from tank to carb there is no fuel pump). Shut off fuel, remove fuel hose from carb and blow air through the fuel port with the float bowl still off. This should help get any dirt out of that part of the system. At this point you can put the float bowl back on, fuel hose back on and fuel turned back on and try to start. If you still get nothing, you will need to completely remove the carb and do a cleaning job at the prots and adjustment screws. Depending on how old this motor is, this would be a good time to invest $20-$30 to get a carb rebuild kit and replace all gaskets and seals...doing this also gives you a chance to do a deep cleaning. Good luck, this project should take roughly 1 hr to do completely
float needs adjusting by stripping down again and take the pin out that holds the float in place then it will come off withe the inlet fuel valve still connected all you have to do is bend the tab down a tad just a little bit so it allows more fuel in the bottom then reinstall back together get back to me if no difference
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