I think this has been covered before. How much air can come out of the front bearing? I say none. I had one other go engine that had a front bearing air leak,would not hold a tune for crap! Replaced put engine back in water no leak tune was spot on. I know that some fuel coming out is okay.Some,not blowing all over the whole car. When I did the pressure test I can blow into the fuel line very lightly and have air bubbles like a bubble machine. Not the normal none /a few.