I've done something stupid! Replacing air (smog) pump, I didn't mark which tube on the pump body is the inlet, and which is the exhaust. This is on the black plastic housing, that you re-use when replacing the air pump motor itself. To which one do you plug which hose? Can't believe I can't find a picture anywhere!

Please help ASAP, I'm outside working on this right now!

 

What are you driving?

This view shows the inlet that should apply to the SCFI engines, not sure of the '95 CPI arrangement:


The inlet is the port pointing towards the motor and the outlet is pointing out the side of the pump.

 

Gaah, sorry, that's what I get for posting in a rush - forget to put what type of vehicle, LOL. ;-p

2001 S10 Blazer, but disregard now - I figured it out by putting 12V directly to the pump motor, and just holding my thumb over each tube, to figure out which was intake and which was exhaust. ;-)