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Farmall & IHC Tractors Discussion Forum
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Gas in oil

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Mike3501

07-19-2005 20:38:25




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Where do I start looking to see why my engine oil is deluted with gas Thanks for any help




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Trickster

07-20-2005 15:19:17




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 Re: Gas in oil in reply to Mike3501, 07-19-2005 20:38:25  
Another thing you might want to do is check compression,it could be due to excessive blow-by. Does it blow smoke out the oil breather cap?



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captaink

07-20-2005 08:20:34




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 Re: Gas in oil in reply to Mike3501, 07-19-2005 20:38:25  
If the drain plug in the bottom of the choke area in the carburetor is plugged, and if the needle and seat are not sealing, the fuel could be getting high enough to go out past the throttle shaft and then over to the governor and into the engine oil.

Is your engine running rich? That is the next place I’d start looking is for black smoke coming from the exhaust. If so, then the carburetor needs attention either float level too high, needle & seat not sealing, or just plain set too rich.

Good luck!

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waltertn

07-20-2005 06:07:15




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 Re: Gas in oil in reply to Mike3501, 07-19-2005 20:38:25  
Are you having ignition problems? If it is not properly burining the gas it can seep around the rings.



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old

07-19-2005 21:01:20




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 Re: Gas in oil in reply to Mike3501, 07-19-2005 20:38:25  
I'd start at the carb. Do you shut the gas off when you park it? If you don't the float needle maybe leaking a little and that will get gas in the oil.



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mike3501

07-19-2005 20:40:08




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 Re: Gas in oil in reply to Mike3501, 07-19-2005 20:38:25  
Sorry ,I forgot to say I have a Farmall super H 52



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RustyFarmall

07-20-2005 04:43:15




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 Re: Gas in oil in reply to mike3501, 07-19-2005 20:40:08  
Are you sure it is gas? I don't think there is any way that a bad carb could possibly leak gas into the engine, even if the needle valve was not working at all the gas would still run out of the carb long before there was enough accumulation to run into the engine. It would have to fill the carb, fill the manifold, and then go in past the engine valves.



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old

07-20-2005 07:06:55




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 Re: Gas in oil in reply to RustyFarmall, 07-20-2005 04:43:15  
Hey Rusty, I know it sound wrong but if you say take an old 8N ford and you leave the gas turned on it can/will fill the oil pan with gas. I know its one that doesn't make since but it does it some how. So on an H or Super H it could also happen. I learned about this type of problem the hard way and have seen it on more hen one brand of tractor. Doesn't happen often but it does happen.



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RustyFarmall

07-20-2005 08:29:46




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 Re: Gas in oil in reply to old, 07-20-2005 07:06:55  
Old, didn't mean to say you were wrong, in fact, after reading one of the other replys, I think I am wrong. I never thought about the throttle shaft into the governor thing, but at the same time, if the gas did get that high, I don't think the tractor would even start, let alone run.



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old

07-20-2005 08:44:26




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 Re: Gas in oil in reply to RustyFarmall, 07-20-2005 08:29:46  
Thats also one of those things I believed also. Most of the time what happens is the gas runs out of the tank and in to the oil then of course when you need to start the tracotr the tank is empty, so you put gas in the tank and it starts because it hasn't had time to fill the carb. Oh by the way I'm not saying your wrong either or that I'm right just a guess on my part that I have seen happen more then once.

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Nat

07-20-2005 06:42:20




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 Re: Gas in oil in reply to RustyFarmall, 07-20-2005 04:43:15  
Yeah, and if the carb and manifold were filled up with gas, you'd hydro-lock the engine as soon as you turned it over.



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old

07-20-2005 09:33:01




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 Re: Gas in oil in reply to Nat, 07-20-2005 06:42:20  
True but most of the time the seaps in so slowly that it goes down past the rings and into the pan before you ever get other there to start it. Does it over night in msot cases and by the time you get back to it the tank is dry and the gas is in the pan. Had it happen to me one time and wouldn't have noticed but there was a big spot under the tractor of what looked like oil the had come out if the dip stick tube. Engine would turn over but no gas in the tank just a lot of oil and gas in the pan.

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Jeff Lafountain

07-20-2005 12:57:36




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 Re: Gas in oil in reply to old, 07-20-2005 09:33:01  
Not sure about your H, I've never looked at one that close. I've got an F12 and no fuel pump.

If the H has a cam driven fuel pump fuel may get by the diphram of the fuel pump and fill the crank case.

My buddy had a Ford truck do that and almost blew us both to kingdom come.



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