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Gas flowing into cylindres

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tugboattim

03-05-2003 22:57:58




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I went to jd dealer bought the gasket kit for carb and a new needle and seat for the float. the next day the cylinders were full of gas. I droped the bowl back down to inspect but everything looks normal




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John T

03-06-2003 03:41:43




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 Re: gas flowing into cylindres in reply to tugboattim, 03-05-2003 22:57:58  
Mornin Tugboat, I read clooneys post and those (needle valve and seat etc) sure are the "usual suspects" lol and was wondering how the carb acted BEFORE you installed the kit and your reasons why it needed it????

Did you happen to check if the float itself had any leaks i.e did it seem to have any fluid inside it or make a sloshing sound when shook??? Assuming you have a brass float that is, Ive seen some cork ones also, however.

Was there a new gasket that fit under that brass needle valve seat assembly where it screwed down into the carb ?????

Did the new needle seem to move up n down easily when the float was lowered and raised??? and did you make any float level adjustments???

Bowl removal and moving the float up n down will tell you a lot. I always turn the gas off at the sediment bowl just to be safe, but you ought to be able to find and fix whatever is causing the gas to not shut off at the carb and fill the cylinders. Whats the oil and its level look like??? If you dumped too much gas in the crankcase, the oil will need to be changed.

Good Luck and let us know what you find. God Bless the USA Ol John T Nordhoff

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Clooney

03-06-2003 02:32:46




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 Re: gas flowing into cylindres in reply to tugboattim, 03-05-2003 22:57:58  
Tugboattim, if the problem just started after the carb kit was installed... suspect the float is sticking, or the needle is cocking & not closing, or the seat is leaking where it is threaded in, or the new needle & seat are defective.
~If the problem has persisted before the carb kit or you can't find anything wrong with the above... suspect the carb bowl vent is plugged [causes the fuel to siphon out of the carb], or there is porosity in the carb casting around the seat area.
~If you still can't find the problem...pull the float bowl down [or remove it], then plug the hole in the bottom with a cork & hook a liquid or fuel supply to the fuel inlet & let it sit & watch it. If the needle or bowl is leaking you will be able to see it. If nothing found with the bowl off you probably have a plugged bowl vent [more than likely the baffles in the top of the bowl carb body casting]..... ..... ....

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Wayne in Tn.

03-06-2003 11:17:31




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 Re: Re: gas flowing into cylindres in reply to Clooney, 03-06-2003 02:32:46  
Tim, I will add a little to Clooney and John T.s comments. I am not sure what the carb. kit looks like you are getting. I only have expierence on the Dubuque carbs. But I have seen new needle and seats leak. Some folks say the ones they are making now are no good. One thing I have noticed is that sometimes the wire clip that holds the needle to the float, can cause the float to hang, or not let the needle seat properly. In some cases I have had to tear the carb. back down and toss out this clip. Worked fine after that.

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