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aokpops

gas leaking help

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aokpops
Hello I have 917 A/C with 17 hp twin . this is the third time I had a crankcase full oh gas .I replaced the needle an seat twice . can, t find any holes in the float it floats don,t know why this is such a problem . thanks for your time Pops.

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Dadsy98
Greg, I'm equipped in my shop to handle problems like that. My repair is guaranteed and only costs $295.00 including material. Email me for an appointment. OR... Buy and install an inline fuel shut-off valve. $7.00 :) Steve

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BLT
quote:
Originally posted by Dadsy98
Greg, I'm equipped in my shop to handle problems like that. My repair is guaranteed and only costs $295.00 including material. Email me for an appointment. OR... Buy and install an inline fuel shut-off valve. $7.00 :) Steve
The fuel pump check valves might not be holding back fuel flow. Best advise do above, new fuel pump or not.

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nahrwoldt
I must agree with the comments to replace the fuel pump. I have a Kohler KT 19 that use to fill the crankcase with gas. I installed a new fuel pump and rebuilt carb and presto no fuel leak into the crank case. I also did two complete oil changes after run the engine for 30 minutes to get all the gas out of the crankcase. Good luck, Tim

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JimS
I don't know the exact setup on your engine but I also had a similar problem on my 4041. It seemed like dirt was getting into the float valve and causing it to leak. I would change the fuel filter and the problem would go away for awhile then return. One day I was looking at a welder with a similar Onan engine and noticed that there was no fuel return line to the tank. The fuel pump was just dead-headed into the carb. So, I removed the return line on mine and have not had a problem since. I am not sure why this solved the problem. Maybe the higher line pressure helps to keep dirt cleared from the float valve. Anyone know the advantages/disadvantages of having a return line?

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