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Kohler 18Hp Horizontal Shaft


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#1 superspeedex OFFLINE  

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Posted March 22, 2014 - 05:16 PM

guy up the road from me just got a bobcat 450  and it smaller has a 18 hp opposed like what in the john deere 318s   and it doesnt have any compression so what could be the prblem i have heard that  there known to lose valve seat if over heated but i dont know any of the past history.  Is there any common compression lose problems with these engine???



#2 LTD OFFLINE  

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Posted March 22, 2014 - 05:28 PM

Probably an m18. Working on one of those right now. By no compression,you mean none at all or a low reading?  Both cylinders? Kt's(which were the previous series ) were more likely to lose compression. Mostly rings went bad on them. You can try putting oil in the cylinders and then test compression. If it stays the same,the valves are at fault. If compression goes up,then the rings are at fault.


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#3 superspeedex OFFLINE  

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Posted March 22, 2014 - 05:39 PM

By no compression I mean like I rolled it over by hand and could here very little psssst outta the exhaust when I got through like chainsaws have more compression and it was pretty much the same resistance through the whole revolution
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#4 Trav1s ONLINE  

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Posted March 23, 2014 - 02:35 PM

Stuck valve/s?


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