Evo oily air filter

[HOLY DIVER]

friend of mine has a 95 softtail and he is venting way to much oil out the air cleaner its dripping out and blowing all over the side the bike i told him 2 MAKE SURE the oil was not over filled (check it hot) he did in fact it was a little low i know on a twin cam it could be oil pump alignment but on a evo i don't know what 2 tell him?

 

[karlsbike]

Hi there Holy Diver
Did this excess oil venting situation started happening suddenly, i.e .following an oil change/top up or is it something that has gradually developed? The first one is obvious, and the second could be a sign of excessive blow-by building too much pressure in the crank. Worn rings, in other words...
Does this happen after the bike has been sitting for a while?
It could also be the oil check ball needing cleaning/replacement. It is sitting under spring tension under one of the flat screwdriver slot type caps, and is an easy and cheap thing to check and replace (tip: don't use a srew driver to open it, use a coin that just fits in the slot and pliers).

 

[fin_676]

It could be that the umbrella valves are past the end of their lives and will need replacing
But other than that i think Karl had most things coverd

Brian

 

[Breeze3at]

I'm with the umbrella valve suggestion. They are made of a type of rubber and get stiff or deform with age. They are easy to replace.

 

[Bud White]

yep check the umbrella valves for sure

 

[Jack Klarich]

There is also a fix to drill the drain holes a bit bigger in the lower rocker box:s