Mini dudes,

I am attempting to chase down a vacuum leak, per suggestion from codes 1498 & 1237. I have checked the integrity of all vacuum hoses except for #20 on the diagram below. Obviously, the diagram does a great job in explaining where it connects (sarcasm, in case you didn't read it that way).

Is this thing visible to the naked eye? Anyone have a picture of it on a motor?

 

I suspect that the top end goes to the MAP sensor next to the airbox, but the other end is a complete mystery. I feel like I found its brother connected between exhaust manifold ports #2 and #3, held in by red clips. If that's the same hose, the whole thing seems to be in good shape...

 

It goes into the right hand hole (As your looking at the engine) of the black air duct (16) going to the throttle body. Unless i'm wrong ") What color is the tube, grey or black?

 

The line in question is grey. I spotted a grey hose going between manifold port #2 and #3, but it did not appear to have another hose in close proximity.

 

In that case, it's the positive crankcase breather line.. Goes into the nearest hole to the supercharger, Just behind it kinda, you can see the red connector..

 

The hose your pointing to in the pic is grey and goes into the black supercharger inlet hose and connects on the other end to the MAP sensor mounted to the thermostat housing at the back of the head.
There is a black hose right next to it that runs from the black supercharger inlet hose and goes all the way back to the brake booster.

 

Thanks guys.

 

there are two grey and one black vacuum hoses that connect in that tube between supercharger intake and throttle body. black is brake booster line grey right next to it is map other grey one not sure but want to say its throttle body or crank case vent but dont quote me on that one. i know the brake booster and map one are correct cuz i broke them both when i put my sprintex on and had to order new one.