Guess I'm still baffled. The one that stalls is the engine with more blowby as evidenced by seeing smoke come out of the tube and it will smoke some when heavily accelerated. It doesn't comsume much oil between changes but some. It is a good running car getting 25 to 28 MPG.
The other, which doesn't stall, built up a LOT of pressure when I did this test. The flat tube from the top of the VC to the air cleaner housing was nearly round. That motor doesn't smoke hardly at all except with hand operated rev the hell out of the engine type fooling around. It too is a good runner at close to 30 MPG.
So what gives? shouldn't the second motor stall? If the pressure was leaking I should not have been able to build up so much I wouldn't think.
I'm more curious than anything since the one that does stall is actually the one I was planning to keep, but if the engine's on it's way out, I might just keep the other.
Very confusing. Wish I didn't do it :-)