probably not as I see pressure no suction .....but I ride this one as transport all year as you can see how dirty it is. Here in New England . Had the filter so it got one. I have no filter on the breather hoses they run 1 inch below bottom of frame. Used to run a small mower gas filter on twinks and evos....never dirt on the road side so stopped doing it

 

I think than it would just be a loop so you wouldnt be getting rid of pressure. In the real world the MOCO or somebody else could have built a 4 stage oil pump...with one stage built as and evacuate system vent to a tank like race motors......big HP gains in racing....but again EPA would be up there AZZ for venting to atmosphere....
thanks for compliment.....not a know it all but might get somebody else thinking of better ways like the nice aluminum one ! I had not seen it till recently.

 

LMAO

This is how I did them after I tested the system for a while...safety wire takes up less room and cheap..... lol

 

So how many miles you got on it? My bet is that head breathers freaked out..