I know that countless people have posted this but I haven't been able to find a diagram for the engine vacuum system. I just bought a '90 Integra with the B181A and noticed afterward that a couple of vacuum lines were going nowhere. 1 was coming off of the intake manifold so I just plugged it and that lowered the idle to where it should be. Another was already plugged on the intake, and the other is the line coming from the EGR. That's the one I'm most curious about. The car runs great, no drivability issues at all but I really want to know where that EGR vacuum line goes, and maybe if anyone else can tell me where, or if, the other lines are supposed to go to anything. The 2 on the intake are on the rear (closest to the firewall).

~James

 

i had the same problem on mine . i put a motor out of an automatic in my 5 speed . i got the to diagrams from alldata and compared them . the 5speed doesnt need it so i pluged it and havent had any problems.