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Carburetor leak

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12-23-2018 06:01:13

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When I forget to turn off the fuel on my 1953 Super H, gasoline leaks at the bottom of the carburetor. While the tractor is running I don’t notice gas leaking. Any advice on this? Also, I have an oil leak at the shaft seal on the transmission side when running. The oil looks like “baby **** brown”. If I changed it, flushed the transmission and refilled with 85/140 weight oil, would the leak slow down? Is there an additive I could try in the new oil as well?

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01-02-2019 11:51:32

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 Re: Carburetor leak in reply to dwashebek, 12-23-2018 06:01:13  
Try tapping the float bowl with a wrench or screw driver and see if the leaking stops. It may be your float is hanging up. Otherwise, start turning the gas off at the tank to stop the flow. You might get lucky and find the problem goes away on its own.

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01-01-2019 14:44:40

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 Re: Carburetor leak in reply to dwashebek, 12-23-2018 06:01:13  
Fuel leak may be from a a fuel logged float that will not seat needle any more, fuel listings going out the vent .

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01-01-2019 14:55:12

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 Re: Carburetor leak in reply to 560Dennis, 01-01-2019 14:44:40  
Forgot this the fuel float was designed for older specific gravity fuel newer fuel have alcohol with may require the float to dip deeper to get the needle to shut off. Good luck

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used red mn

12-23-2018 10:16:00

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 Re: Carburetor leak in reply to dwashebek, 12-23-2018 06:01:13  
As to your second question, flushing and changing oil in the trans would probably just make it leak worse. Unless for some reason the lube in there now is real thin. Old grease like you are describing is usually thick. Only way to stop the drips is to replace the seal. When replacing the seal you need to make sure the seal surface on the shaft is good and the bearings are not to worn.

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12-23-2018 06:13:28

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 Re: Carburetor leak in reply to dwashebek, 12-23-2018 06:01:13  
Possibly the carburetor float is out of adjustment, ot the float valve is in need of replacement. Most likely is both need attention.

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12-23-2018 08:05:29

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 Re: Carburetor leak in reply to rustyfarmall, 12-23-2018 06:13:28  
The carburetor was supposedly just rebuilt, so the float adjustment sounds like a place to start. Can it be adjusted while still on the tractor?

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12-24-2018 08:08:04

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 Re: Carburetor leak in reply to dwashebek, 12-23-2018 08:05:29  
most probable cause would be the needle and seat. usually floats out of adjustment do not case gas to keep flowing into carb. much easier to remove carb and turn bottom upside down to check the float level. it can be done on the tractor but pretty hard to keep the needle in place if you pull the float pin. also supposedly the needle should have been changed buy nothing guarranteeing that till you have a look.

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12-23-2018 08:53:25

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 Re: Carburetor leak in reply to dwashebek, 12-23-2018 08:05:29  
Only way to adjust the float is to take it off and open it up. But if it was rebuilt also good chance it has one of these rubber tipped float needle and if it does the problem is likely to go away after a while since the tip needs to get a set in it which happens over time. When I rebuild a carb I put a set in the needle by tapping on it before putting the carb together. Either way one should always turn the gas off when not using the tractor to keep that from happening and also to not have that cause gas to get in the oil which can cause a blown engine

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