We went for a day sail not too long ago and, because my engine
is old, I check it frequently when we stop after running a bit. I noticed that it had blown oil
out of the top of the two nuts that hold the valve cover on. I checked for blow-by through the oil
and sure enough there was a consistent puff. There was no smoke or odd smells coming and I checked the oil for fuel
smells and there was non. The engine
starts relatively quickly. I have not checked compression
but seems to run smooth. I have discovered that there is a "venting Valve" (crankcase breather) part #0008e4177 (Circled in red) under the valve cover that is supposed to vent the extra pressure into the intake. I want to start by the easy and cheap
stuff first before committing to a tear down and rebuild
. My problem is that the bolts that hold it down (circled in blue) are stipped. They are Flat head
screwdriver. Online resources tend to insinuate that you can clean this valve. I also have faced the issue that this part is virtually impossible to find for less than a first born child and shipping
that costs more than the part itself, as most parts
for this engine. I will eventually re power the boat
but as I am currently learning
to sail correctly and short on cash flow I would like to get as much as I can squeeze out of it. Hurray for BoatTowUS!
My question: Have any of you had any experience with cleaning
or rebuilding this part? Do you know how I should go about replacing or finding an alternative for a viable price
? Have any of you simply replaced the fill plug
with a vent type valve and how did that help your positive crankcase pressure and is that a good alternative?
Any other recommendations or comments would be appreciated too. I searched far and wide and came to these conclusions based on my research
but it has been a dead end since.