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Car Forum / Driving, Maintenance, Tuning / Maintenance and Repair / July 2006gas draining from carburetor drain hose
yes, I know that's what it's for). Started running very rough, missing, won't idle. When stopped, gas drains from carb drain hose. doesn't drain while engine running. shut gas off and stops draining. with gas off, will drain if drain screw opened (so gas in bowl). will drain with drain screw closed if gas is on. starts easily. what the heck is going on?? > yes, I know that's what it's for). Started running very rough, > missing, won't idle. When stopped, gas drains from carb drain hose. > doesn't drain while engine running. shut gas off and stops draining. > with gas off, will drain if drain screw opened (so gas in bowl). will > drain with drain screw closed if gas is on. starts easily. what the > heck is going on?? With your post's total lack of pertinent information I can only guess that you are describing a carb with a stuck or "sinking" float. Make, Model, Year, Engine, and some kind of helpful description of your carb (manufacturer maybe?) may help someone give you a meaningful answer/solution to your problem. Good Luck > > yes, I know that's what it's for). Started running very rough, > > missing, won't idle. When stopped, gas drains from carb drain hose. [quoted text clipped - 11 lines] > > Good Luck It's a trick question. He posted the same question in the motorcycle group and they told him he was confused too. Maybe he's inhaling too many of those gas fumes. It could even be a lawnmower or an ATV. Who knows! anumber1, You were right, it was a stuck float valve, probably some crud in the gas. I am puzzled, though. If the float valve is what stops gas from running into the carb, and gas is running into the carb, then what else would it be besides a float valve not closing? How does Make, Model, Year, Engine, etc change any of that? > anumber1, > You were right, it was a stuck float valve, probably some crud in the > gas. I am puzzled, though. If the float valve is what stops gas from > running into the carb, and gas is running into the carb, then what else > would it be besides a float valve not closing? How does Make, Model, > Year, Engine, etc change any of that? Your right it doesn't. The obvious solution to your problem was the float. Modern cars don't have floats, so you must not have one those. Your mention of carb drain hose and drain screw suggest and That it "starts easily" indicates an updraft carburetor. There hasn't been a car built with one of those in 60 years. So one might guess you are talking about a very old car or an old tractor or riding lawn mower. That's if your statements can be believed, but this is usenet and one can only guess if the poster is on the level or just spouting some nonsense he read somewhere else on the web. If you really want help it pays not to be to cryptic. -jim > anumber1, > You were right, it was a stuck float valve, probably some crud in the > gas. I am puzzled, though. If the float valve is what stops gas from > running into the carb, and gas is running into the carb, then what else > would it be besides a float valve not closing? How does Make, Model, > Year, Engine, etc change any of that? Well, for one thing my answer was a total stab in the dark. Some mid to late 80's cars have electric fuel pumps and pressure regulators feeding the carb. Too much fuel pressure can and will force the needle valve off the seat and cause a carb's float bowl to overflow through the vent. I have had more than one Rodchester Q-jet with worn throttle shaft bushings leak fuel from the throttle shafts also. With more information in your original question, you would have gotten less of a guess and more of an informed answer. Then again if you were just trolling anyway...you got one... |
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