So circled in blue is the primary air bleed, which according to the FSM attaches to the upper intake manifold on the back. Circled in red is the secondary air bleed, which I can't find in the FSM. This picture that I found on the forum shows the secondary air bleed attached to the upper intake manifold, but doesn't show where the primary is attached. Can someone help me with this? The car is an 89 with JDM Turbo II motor. 3 nipples on the back of the UIM.

 

Hmm, I guess I won't get much help if I don't actually attach the picture. Here it is. Thanks.

 

failed again

 

I'd question why one secondary air bleed would be connected to the other air bleed with no tee to feed the secondary air bleed.

I don't own a series five, but your primary air bleed would go to a nipple on the back whos internal passage in the throttle body would begin at a place prior to the throttle plates. Like blow into the nipple at the rear and see which ones get fed from a tiny hole prior to the throttle plates.

I may be wrong about the secondary air bleeds............but doubt it.

EDIT: Even that book thing called a fsm shows the primary and secondary air bleeds tee'd together being fed by the same nipple that gets it's air from a location prior to the throttle plates. See the fsm picture attached.

In other words the hackup dwg shown in some posts on this forum is.......wrong agin.