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#1
06-01-2017, 07:08 AM
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Gas in the oil
Greetings,
My 682 has pumped gas into the oil for the second time. First time was about a month ago , I plowed my garden, turned the machine off and the next day when I went to start it ,discovered the oil in the gas. Second time , last night I was mowing and it wouldn't run unless the choke was pulled halfway .It stalled on me and I checked the oil and it was full of gas again. Anyone have an ideal why it's doing this ?
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"One way to make sure crime doesn't pay would be to let the government run it." -Ronald Reagan 
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#3
06-01-2017, 07:19 AM
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It's most likely the fuel pump going bad and allowing gas to leak into the crankcase, could also be the float sticking in the carb.
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Tim Pap's 100 Restored 108 1211 Dual Stick 1050 Pap's 100 restoration thread - http://onlycubcadets.net/forum/showthread.php?t=47965
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#4
06-01-2017, 07:47 AM
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Don't worry,
a few more times and it will throw a connecting rod because of no lubrication and your problem will be over. So you have a choice: Replace the fuel pump and needle/seat in the carb now, or the complete engine later ( but not much later) 
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#5
06-01-2017, 09:39 AM
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I picked up a pump for around $40, can't remember right now where I got it. Guy said it was made by whomever is making the ones for Kohler. So far so good. If you haven't already, I'd add an inline filter and change out all the fuel hoses as well as wash out the fuel tank, in case debris is getting in the carb causing the needle not to seal. Toss in a new needle and seat and you should be good to go after an oil change.
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2072 w/60" Haban 982 with 3 pt and 60" Haban 1811 with ags and 50C 124 w/hydraulic lift 782 w/mounted sprayer 2284 w/54" mowing deck
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#6
06-01-2017, 04:45 PM
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Ever mag that I have and plan to keep gets a Facet fuel pump. Cheaper than a Kohler pump and no more chances of ruining a engine because of a fuel pump going bad. I got my last 2 from David Kirk engines. He had the best price.
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1572, 1864 x2, 1810 x2, 1863 & GT1554(Dad's Ole Mowers), 1811,782D, 1872 x2, 782DT(Sold), 3235, 1860, 1772 with 3-point and Turbo.
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#7
06-01-2017, 04:58 PM
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Quote:
That's not normal behavior for an engine. I'm with cubdieselfan, I put electric pumps in.
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Terry O,100,72,102,123,104,124,105 125,129,149,1200,982 (2)2182s w/60in Habans 3225
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#8
06-01-2017, 07:46 PM
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I'm just thinkin' out load so bear with me and guide me but.....
I didn't know fuel would pass through the fuel pump without the engine running but ya learn more every day.... so anyways I'm still thinkin' and I say to myself "Self, since them guys seem to know what you didn't, which is that fuel will flow through the fuel pump whether the engine be running or not," "Self, why are some of them guys tellen' that guy his fuel pump is bad?" "cause if it's supposed to stop the fuel, why don't they call it a fuel "valve" instead of a fuel "pump"? Then I'm thinkin some more and I say.... "Self, ain't the needle and float in the carb supposed to stop the fuel regardless of whether the fuel pump is a fuel pump or a fuel valve?" So why are some of them guys tellen that guy to replace his fuel pump.... er, I mean fuel valve, ...I mean pump valve, ......I mean.... Never mind no more thinkin' except "do I want my Crown Royal on ice or straight??
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#9
06-01-2017, 08:11 PM
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Quote:
 ). Seeing how this is kind of a weird problem, I'd check to see if the float was full of gas, or the lever for the needle was somehow damaged---before I ordered a kit. Of course this IS a 682 and along with its 782 buddy, they were known to pull this stunt when they were still under factory warranty.  
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2072 w/60" Haban 982 with 3 pt and 60" Haban 1811 with ags and 50C 124 w/hydraulic lift 782 w/mounted sprayer 2284 w/54" mowing deck
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#10
06-01-2017, 08:56 PM
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To explain the fuel pump issue, the diaphragm has a side exposed to the fuel.
The other side is exposed to the crankcase where the actuator lever rides on the camshaft. When A diaphragm wears out and ruptures, of just becomes thin, it leaks, and fuel goes right through as if it was a screen,--- Walla you have fuel in the crankcase. As far as fuel passing through a fuel pump when it is not operating: the valves are one way from tank to carb but they do not always shut off completely and dribble a bit so you can get a small seepage of fuel past them. it is just the nature of things. A ginn-ewe-wine Kohler needle and seat & bowel gasket's are $5.80 + ship on epay. # 282269147139 
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