Join Date: Nov 2010
Location: Jacksonville, Fl
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Is this a Stupid Thought?
So I gotta Yanmar YSM8 that until the last time I ran it under load has always ran-away on me at some point forcing me to shut the engine off via the compression chamber to avoid a full-blown run away situation.
Now, Twas thinking- Since I have replaced the tranny and governor mechanism that leaves only a leak somewhere internally (piston, gasket, o-ring, ect) that is letting (what I think to be) fuel, not oil, somewhere it is not supposed to be causing combustion and then run away.
So here is my thought. The engine knocks a good deal at lower RPMS being just a single clutch old 8 hp engine- simple as can be.
So, my thought was that usually when the engine runs away its when I am at low RPM in forward. Maybe, I think, the extra rattling and vibration is allowing some fuel to work its self into an internal chamber. When the engine is revved up it purrs more or less and is pretty stable- just a small vibration throughout.
So here it is- Do you think that running my diesel at a higher RPM could help prevent fuel or perhaps oil from leaking into a combustion compartment or something? Like, could the knocking at low RPM be A REASON (not THE REASON) that the engine is getting excess fuel/oil inside?
Obviously either way I need to get inside and replace what is worn/ no good. Just wondering if until I get to that if this could be a sort of ghetto-rig fix that will hold-out during the occasional usage I put on the engine.
If this post has been entirely asinine and you feel I have stolen a portion of your life you may never recover then my apologies. Twas the magic dragon befuddled me mind inta conjuring such fools talk.