Quote:

Definitely cut and get the breather nipples off the baffles.

Your evac hose is already Off/disconnected at the header and muffler system, so that is not Back pressurizing it.

Forget about hooking up a vaccum test port at the fuel pump block off plate. You dont have any vacuum. You have positive pressure. The leaks may be helped or stopped by sealing the breathers and reducing the nipple length to get them off the baffle plates.

Start there, if you still have to much positive pressure, oil will come out of the filters on the breathers. Then, you have Bigger problems, loss of ring seal or leaking head gasket.



He can measure how much pressure is there if he used
the vac port (anywhere in the crank case system) I
had a port in the back of the valve cover to monitor
my vac.. he can use a compound gauge or a balance tube