over40pirate 0 #1 Posted August 7, 2020 Anyone know if the cam that operates the fuel pump on a Kohler M14 engine ever wears out? Put 2 new fuel pumps on and no pumping. Its getting gas to the pump. They are import pumps, but tried 2 new ones. The last one lasted a few years. maybe the old one is good and cam is bad? I felt the pump arm being pushed a bit as I installed the pump. This is driving me nuts. Motor starts right up gas squirted in carb. Share this post Link to post Share on other sites
bds1984 1,377 #2 Posted August 7, 2020 I haven't had any pump failures or cams going flat and the imported pump I've been running for over fives years now is trouble free; but I am not saying that doesn't happen. What I have noticed with machines I have had come through my hands over the years is, is often over looked, some people double gasket the pump inadvertently or find some absurdly thick gasket to use. That little bit will cause the pump to cause a no pumping status. But of course I would check the fuel lines/filters/pump diaphragms for cracks as well. 1 Share this post Link to post Share on other sites
WHX?? 46,404 #3 Posted August 7, 2020 When installing make sure the lever is under the cam. Highly doubt the cam lobe would ever wear off. 2 Share this post Link to post Share on other sites
953 nut 51,018 #4 Posted August 8, 2020 Your camshaft is hardener steel so the likelihood of it being the problem is minimal. I have replaced the mechanical fuel pumps with electric ones and been very happy with them. 2 Share this post Link to post Share on other sites
Bill D 1,577 #5 Posted August 9, 2020 I replaced a mechanical pump with a vacuum pulse pump on my dad's tractor and it has been working great. Share this post Link to post Share on other sites
The Tuul Crib 7,331 #6 Posted August 9, 2020 Yep! Switch out to an electric pump and steer clear from the manual ones made in china! T😎 1 Share this post Link to post Share on other sites
AHS 1,405 #7 Posted August 9, 2020 1 hour ago, The Tuul Crib said: Yep! Switch out to an electric pump and steer clear from the manual ones made in china! T😎 I have no idea on the electric ones, I’d be willing to try them. What do you set them at for poundage? Share this post Link to post Share on other sites
The Tuul Crib 7,331 #8 Posted August 9, 2020 You can spend anywhere from 15 to 45 on one.look for one with around 3 to 4 psi. I mounted mine in front of the engine below the carb. I wired mine to accessory side of the key switch. That way it would operate only while the key is on. Share this post Link to post Share on other sites