So I did a leak test and found air coming out from under the 3rd fuel injector. I took off the plenum and checked the under-plenum and fuel rail and don't see any cracks. Is air supposed to leak from there? The problem with the car was that it bogging randomly around 2000-5000rpm. Randomly as in it bogs between those rpms but not at a consistent rpm. Also won't go over 5000rpm.