I have searched through 300 posts on this forum looking for an answer to this question but the closest discussion, which didn't answer the question, was in a really old thread: http://www.cruisersforum.com/forums/...pump-4083.html
. Rather than resurrect that dead discussion, I decided to open this new thread.
We recently brought our boat out of layup
and motored for about 4 hours to a cruising anchorage in San Carlos
. Several days later I pulled the dip stick to check the oil
level on one of our Yanmar
3GM30FC engines and was greeted with a gusher of diesel
mixture. On the advice of several locals and a Yanmar
tech in Mazatlan, I replaced the fuel lift
pump, which upon disassembly had a crack in the diaphragm
My question is: "What would be the symptoms of the same failure in an operating engine
I suspect that mixing even a small amount of diesel fuel
with lube oil would thin the oil enough to wipe all the bearings in the engine
. Worse, if the oil sump filled with fuel, the engine could suffer catastrophic failure from attempted compression
of the liquid.
Am I being paranoid or is these legitimate concerns? Has anyone seen such an event?
Thanks in advance.