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D47U Pony Carburetor

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16 years 11 months ago #8411 by Don Clark
Pony engine completely flooded. Open petcocks and stream of gas comes out. Removed Carburetor and want to take it to shop in San Francisco East Bay area. Can anyone recommend a shop in Hayward/Fremont/San Jose/Oakland area. Will go further away if highly recommended or even send by FedEx, etc.

Thanks for any help.

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16 years 11 months ago #8415 by Willie
Replied by Willie on topic D47U Pony Carburetor
Don on you way down from Potter Valley try stopping in at Browns Auto Parts in St Helena on Main St they have shop in rear that used to do a good job

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16 years 11 months ago #8420 by Don Clark
Replied by Don Clark on topic First Look
Decided to have local shop look at carb. Couldn't find anything obviously wrong inside. The float is okay. Concluded that foreign particle caused float to not work. I also noticed when removing the carb from the pony intake manifold that a needle on the manifold penetrates into the carb when assembled. Could this be related to flooding problem?

First time I have tried this, and am mystified.

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16 years 11 months ago #8422 by ccjersey
Replied by ccjersey on topic D47U Pony Carburetor
the jet that projects from the venturi into the float bowl is normal. If it were stopped up, you normally wouldn't get enough gas in the engine I believe. When you say you removed the carburetor, unless you disconnected the govenor and choke control rods, you were just removing the float bowl off the side of the carburetor. Anyway probably still have trash in the tank and lines to the carburetor that will soon stop the float again.

Either add a filter or better, clean tank and lines and add a filter while you're at it.

D2-5J's, D6-9U's, D318 and D333 power units, 12E-99E grader, 922B & 944A wheel loaders, D330C generator set, DW20 water tanker and a bunch of Jersey cows to take care of in my spare time:D

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16 years 11 months ago #8423 by SJ
Replied by SJ on topic Carb.
Don you didn,t say or I didn,t catch it but did you find the cylinders filled up when you went to start it. They can do it if you don,t turn the fuel (gas) off after you get the diesel started & the jiggling around lets fuel go into the engine. It will also go down into the oil too so the #1 thing is always shut the fuel line valve off after you stop it or many even shut the fuel off & let the engine run till it uses up the fuel in the carb.which is the best practice.

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16 years 11 months ago #8506 by Don Clark
Replied by Don Clark on topic Carb Question
SJ, you may be right. I normally turn off fuel and let pony run until it quits. I believe that this last time I didn't do this. I have taken the carb apart--float housing and carb. They are extremely simple, and I can't believe that anything is amiss. I removed the thin tube (jet) that goes from carb into the float housing and made sure it was clean. Could there be any thing else that could go wrong in the carb? I am so impressed with its simplicity that it is hard to believe that something could go wrong other than becoming clogged with dirt.

And I appreciate your response and help on this issue and on the magneto timing advice.

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16 years 11 months ago #8514 by SJ
Replied by SJ on topic Carb.
Don why don,t you put it back on & see if it runs ok & make sure the gas is shut off each time after the diesel starts or as I mentioned before let the engine burn the fuel up after you shut the fuel off.I even do this with my snow thrower I use around the house & it always starts right up after a couple pulls after setting from one season to the next.

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16 years 11 months ago #8515 by 8C 361
Replied by 8C 361 on topic D47U Pony Carburetor
I would not worry about this problem, some needles an floats leak, some don't. You can cause more problems messing with the carb than you will solve. If it happens onece just do a SJ says and shut it off every time. If it happens even once, don't take any chances. Change the pony oil, it only takes a quart. Oil dilution with gas can have disaserous effects.

Tom

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