Coadster32 793 #1 Posted August 1, 2011 Got a K161 sitting on a 753 that runs good. Light smoke, but nothing of concern as compression is pretty good, and it takes a load just fine. Seems to fill the crankcase with gas, and my first thought is the fuel pump. (Looks like there's RTV as a gasket around it.) Any other sources to this problem? I really don't want to pull the pump off w/o an alternative ready to go. Share this post Link to post Share on other sites
buckrancher 2,694 #2 Posted August 1, 2011 got to be a hole in the pump brian Share this post Link to post Share on other sites
Kingwood990 16 #3 Posted August 1, 2011 I would also check the float on the carb as well. I had the float stick on a Briggs and Stratton last year and it filled the crank case with gas. The engine self destructed. Also change to oil as well. Gas/oil mix does not lube the engine well. :woohoo: Share this post Link to post Share on other sites
stevebo-(Moderator) 8,401 #4 Posted August 1, 2011 Chris, I had the same issue with mine on my 10hp Kohler (case tractor). I tried everything from changing the fuel pump to carb kit with new needle valve etc. It ended up having a pan head screw in the head My thought is that would not allow the valve to close and fuel filled up the crank and eventually poured out of the breather all over the exhaust Yours may be simple but mine was not.. It is worth checking the valves to ensure they are closing all the way. Share this post Link to post Share on other sites
Coadster32 793 #5 Posted August 1, 2011 The engine self destructed. That would ruin my day...for sure. I changed the oil when I first got it in, and noticed it a bit "runny". I just changed it over the weekend, and the same thing, and of course, smelled like gas. I haven't fired it back up yet, and don't intend to untill I get it resolved. I think I'll pull the pump off and look for an obvious hole first. (fast, and easy). I'm hoping to find something there. I'll keep the valves in mind if that doesn't pan out. I did have a float issue, but it leaked out past the bowl gasket, as the gasket was ripped. I fixed the issue, and got a new gasket on. Share this post Link to post Share on other sites
MaineDad 85 #6 Posted August 1, 2011 Chris, You could also just take the pump out of the equation and let gravity feed the carb. You could get a billet cover for the pump hole. Share this post Link to post Share on other sites
shorts 182 #7 Posted August 2, 2011 look at the total picture, the carb sits below the top of the block, so any carb malfunction will result in gas running down the outside of the engine. the fuel pump is directly connected to the inside if the crankcase so an internal leak will let fuel gravity feed into the crankcase. therefore you have a bad fuel pumpor someone putting fuel in the oil fill tube, either replace/rebuild the fuel pump (bad diaphram) or eliminate it. Share this post Link to post Share on other sites
WheelHorse58 1 #8 Posted August 2, 2011 Yeah the float in your carb is sticking causing gas to freely just flow into the crankcase. You need to fix it and drain oil. Share this post Link to post Share on other sites
buckrancher 2,694 #9 Posted August 2, 2011 Yeah the float in your carb is sticking causing gas to freely just flow into the crankcase. You need to fix it and drain oil. choke side of the carb is lower than the intake valve guide so if your carb float is letting fuel leak by it would be running out the air cleaner not going inside the crankcase Brian Share this post Link to post Share on other sites
buckrancher 2,694 #10 Posted August 2, 2011 Chris if this pump is the pulse style pump I make the diaphrams (ONE'S WITHOUT THE LEVER THAT RUNS OFF THE CAM) BRIAN Share this post Link to post Share on other sites
