mazdafvr
+1y
during the weber swap i noticed standing oil under the carb in the intake. told either or lots of blow by? (whats blow by, obviously somthing to do with pressure) or a bad pcv valve. i replaced valve, and about a week or two after, i noticed oil bubbling out of the filter i have on top of the valve cover. y would this be happening? is it bad, cause the truck is running great! im sure these are related, but i still dont know exactly what blow by is and i just wanna make sure everythings good cause my dads been driving it more than me. could it be a clogged oil passage hole in the head gasket? it seems like im getting enough oil to the head, it really doesnt tick much. thanx in advance, truck is runnig awsome otherwise.