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Super H, gas in the oil?

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AZglide

03-11-2003 02:59:19




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Does anyone have any idea how gas could be getting in the oil on a Super H? Its not looseing coolant and the oil is not white. Just thins out and the pressure is low. Can't see the connection, if it was running rich enough to be getting by the rings it looks like it would flood out. As always any advise is greatly appreciated.




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AZglide

03-12-2003 08:51:22




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 Re: Super H, gas in the oil? in reply to AZglide, 03-11-2003 02:59:19  
Thanks everyone. Back to the workbench.....



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Michael Soldan

03-11-2003 20:48:16




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 Re: Super H, gas in the oil? in reply to AZglide, 03-11-2003 02:59:19  
AZglide, Bob M is on the right track for a starting point or diagnosis. We find this problem with cars coming into the shop in very cold weather. An engine needs to heat up to operating temperature before gasoline is efficiently burned, short hops when the automatic choke is on and the car not warmed up results in gasoline in the oil. The same is true of tractors, short runs in cold weather can cause this, a carburetor that is not adjusted properly and a leaking intake can cause this. I don't dispute others who have posted but Iwould start with the simplest..change the oil, check carb adjustment, shut the tank off after use, make sure the tractor warms up to operating temperature..even if you have to put a piece of cardboard in front of the rad. Make it worthwhile when you start the tractor so it does get hot. I had an Allis C once and it was a great little tractor but in the cold weather the oil always smelled of gasoline, despite everything I did ( I am sure it was the carb but could never solve the problem) Good luck from Mike in Exeter Ontario

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Farmer Steve

03-11-2003 07:57:48




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 Re: Super H, gas in the oil? in reply to AZglide, 03-11-2003 02:59:19  
You have what is called washed cylinders. This happens from a faulty carb or float that is stuck.I had one do the same thing and it was the carb. Mine was sucking in air and the choke was adjusted to compensate for it. If I had to guess I would liik at the carb.



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erkel3

03-11-2003 05:22:29




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 Re: Super H, gas in the oil? in reply to AZglide, 03-11-2003 02:59:19  
If the carb float is sticking it could be runnnning in through the throttle shaft and down through the governor housing. Pull the throttle shaft out that comes from the governor to the carb and run the tractor while manually working the throttle and see if it is coming from there.



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Bob M

03-11-2003 05:14:23




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 Re: Super H, gas in the oil? in reply to AZglide, 03-11-2003 02:59:19  
Hey AZ - Gas can also accumulate in the oil from the motor running too cold - caused by excessive idling, or the thermostat missing or stuck open.

You certain also that it's gas that's getting into the oil? If your SH is a "stage II" (equipped w/ live hydraulics), a bad hydraulic pump seal can leak hydraulic fluid into the crankcase, diluting the engine oil.



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fred kobs

03-11-2003 04:19:19




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 Re: Super H, gas in the oil? in reply to AZglide, 03-11-2003 02:59:19  
try shutting the gas off at the tank and see if that stops it. If it does, probably got a float in the carb. out of adjustment.



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Don LC

03-11-2003 09:33:52




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 Re: Re: Super H, gas in the oil? in reply to fred kobs, 03-11-2003 04:19:19  
Fred, is on the right track....do the simple things first....do not start taking the engine apart....make sure the gas cap is venting..... .



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Mike ISW

03-11-2003 03:39:20




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 Re: Super H, gas in the oil? in reply to AZglide, 03-11-2003 02:59:19  
The only place gas enters the engine is the combustion chamber as you know. It must be getting by rings. Or seeping thru a crack in head gasket to make it to crankcase. Gas in the oil can be diasaterous to bearing surfaces. Another possibility could be a cracked liner/sleeve. I'd pull the head and inspect good before a bearing siezed. Good Luck, Mike



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