Quote:
Wanting to replace the vent tube with a better vent system.
It leaks on the floor, and not sure if I have a problem with it since I am blowing oil out the rear main (1 qt every 150 miles), and I’ve noticed vapor coming out of the oil fill pipe when pulling off the cap. The car has 1500 miles since the overhaul.
I have no ports on the valve covers, oil filler cap, or the air cleaner. The manifold port is taken up with the double action fuel pump.
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There are several ways out of this.
It is a 54 MERC 256CI 4V?
Firstly, as mentioned, was the actual breather filter serviced when the engine was rebuilt? The oil filler cap is also the air intake filter. Has that been cleaned/replaced?
If the CCV (crankcase ventilation) has excess pressure, it will not only make it's mark while sitting but will blow back on the engine and appear as an oil pump or rear main oil leak as it moves down the road.
You can add a PCV SYSTEM fairly inconspicuously (college word) and it will be hard to be noticed if you want the original look.
If she's blowing smoke, either the CCV SYSTEM is inoperative or the rings did not seal after rebuild.