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Reload this Page 782 gas/oil coming from breather
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Old 04-05-2020, 10:05 AM
mv7fd mv7fd is offline
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Default 782 gas/oil coming from breather
I bought a 782 that I previously owned. While it was owned by someone else they put another fuel pump on it and now when it starts oil/gas comes out of the breather hose and floods out the carb. I’m assuming they put the wrong fuel pump in it?
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Old 04-05-2020, 10:16 AM
R Bedell R Bedell is offline
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What fuel pump did they put in it ??

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Old 04-05-2020, 10:43 AM
mv7fd mv7fd is offline
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That I’m not sure. I’m assuming an aftermarket
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Old 04-05-2020, 10:46 AM
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cooperino cooperino is offline
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I would assume bad float, maladjusted float,.

As long as it is a low pressure pump it should not force fuel past the float.

Lets see a pic of it
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Old 04-05-2020, 10:57 AM
R Bedell R Bedell is offline
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That I’m not sure. I’m assuming an aftermarket
How about a picture ??

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Old 04-05-2020, 12:11 PM
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ironman ironman is offline
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I'm thinking if the tank is full and the tractor is parked on a slope nose downhill, it should run without a fuel pump. So I'd bypass the fuel pump and see if the problem persists.
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Old 04-05-2020, 12:19 PM
Red Dave Red Dave is online now
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I'm not too familiar with a 782, but in most equipment that indicates the needle valve is not closing.

Bad needle valve, stuck float, float not floating are some of the possible causes.
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Old 04-05-2020, 12:50 PM
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Originally Posted by ironman View Post
I'm thinking if the tank is full and the tractor is parked on a slope nose downhill, it should run without a fuel pump. So I'd bypass the fuel pump and see if the problem persists.
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Old 04-09-2020, 11:09 AM
BCDSFCRET BCDSFCRET is offline
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Default Bcdsfcret
I think you have two different problems
1. Your needle and seat in the carb is leaking.
2. The reed valve under the breather tube coming from the valve lifter is bad.
On all my 782s I install a fuel shut off valve just before the fuel pump. If you don't shut off the fuel all the fuel will fill up your engine crankcase with gas.
If the reed valve is bad your engine builds up internal crankcase pressure and will
blow oil out the breather tube.
Brian
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