WE ARE NOW AT A NEW HOME!
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| weaverama | Mar 2 2009, 05:21 PM |
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Folks, this problem has me stymied so take a minute to read through this. I have put up with this for many months now. If we can't fix it this time, it may have to go into the shop. The K241 on my 1000 barely ran when I bought it last year. It backfired badly and had no power. With your help I got it running fairly well but it has never really ran great. Here's what it took to get running. The head came off, it was de-carbed, new gasket, new breather, adjusted valves, new plug gapped at .035, new points at .020, oil changed to correct level, gas tank removed cleaned and filled with fresh gas. Carb was cleaned and adjusted as per the service manual. She ran OK for a number of months but I never ran her that much or that hard. Over the summer I was pushing some dirt around with the blade and the Kohler would start to run poorly at high RPM's, there would be a loss of power and eventually it would start to backfire. A fresh set of points seemed to help. Today it started again. It feels like the engine just would not rev to 3600 rpm's. (I have no tach) The engine starts to make a funny sound as it approaches max rpm, almost like it is sucking wind, (hard to describe). It sounds like it wants to rev up but then it almost sounds like a load is put on it. The governor starts to surge and it feels like it is starving for fuel or air and after a minute or two it starts to backfire. I re-gapped the points which only had 2 hours on them, they did not look clean so I gave them a light buff with 220 sandpaper. When this did not help I put on a new condensor and still no help. I re-gapped the points down to 0.19 and this seemed to help, at least it stopped the backfiring but she still feels like it is "suffocating" at WOT. I should let you know that when it did backfire you could see a noticeable change in the spark pattern jumping the point contacts. (Not sure if this means anything) I just finished plowing the driveway and she will push all day at three-quarter throttle but I know it can run better. Here are the few things I've been thinking about that might be important: The float bowl has not been adjusted. Nor was the carb dismantled completely last year but it was sure blown out good with Gumout. Every nook and cranny that I could get to. When I de-carbed the head and valves, I did a pressure test by blowing 125 psi up through the valve adjustment ports. The valves leaked, but wouldn't most anything with 125 psi blowing up your skirt? Of should they have held? Don't discount that I am a novice at this stuff. If I should go back and do something again let me know. What kinda baffles me is that while it never runs great at WOT it takes a good hour or so for it to start the backfiring business. Thought it was the points getting fried hence the new condensor but that does not seem to be the problem. I just don't know. Tell me if I have missed something. If y'all start talking about Ohms of resistance and stuff and can't talk me off the ledge, it might be time for the shop. Thanks everyone. Rich |
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| Same old problem · IH Cub Cadet Tractors | |
