My riding lawnmower hasn’t been running smoothly. When I checked the oil, I noticed the smell of gasoline. I drained the oil, and found it completely full of gas! What is going on with my mower?
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6 Responses to “Why does my riding lawnmower have gas in the oil?”
the float on the carb sounds like its sticking open and flooding the engine with gas when its not in use. have it looked at or shut the fuel off after using it.
First, you may actually have drained the gas tank. If the crankcase were full of gasoline, it would do more than “not run smoothly”–it would explode, since contents of the crankcase are pumped onto the cylinder walls. The drain plug for oil is distinctive. If you doubt take it to a shop that specializes in small engine repair. I know how oil gets into the gas, but I’ve never heard or it the other way.
The float needle valve in the carburetor is not seating. This will allow gas to continue to flow into the engine when it is shut off. The fix is to remove the carburetor and clean it by soaking in a good cleaner. Then put it back together with a rebuilt kit. The kit will have a new float valve and all the gaskets that you will need. It is not a hard job and the kit is around $15,00.
February 1st, 2009 at 5:15 pm
you have a crack in the combustion chamber. gas is seeping into the oil reservoir
February 2nd, 2009 at 5:46 pm
the float on the carb sounds like its sticking open and flooding the engine with gas when its not in use. have it looked at or shut the fuel off after using it.
February 4th, 2009 at 1:30 pm
You are up against the ol’ 13:00 problem:
Q: What time is it when the clock strikes 13?
A: Time to buy a new clock.
First, you may actually have drained the gas tank. If the crankcase were full of gasoline, it would do more than “not run smoothly”–it would explode, since contents of the crankcase are pumped onto the cylinder walls. The drain plug for oil is distinctive. If you doubt take it to a shop that specializes in small engine repair. I know how oil gets into the gas, but I’ve never heard or it the other way.
February 6th, 2009 at 4:42 pm
Leak in the fuel line.
February 10th, 2009 at 3:15 am
pipe got it right re-build your carb I will bet $$$ that takes care of the problem
February 10th, 2009 at 12:40 pm
The float needle valve in the carburetor is not seating. This will allow gas to continue to flow into the engine when it is shut off. The fix is to remove the carburetor and clean it by soaking in a good cleaner. Then put it back together with a rebuilt kit. The kit will have a new float valve and all the gaskets that you will need. It is not a hard job and the kit is around $15,00.