hi i'm trying to install the crawford plenum v5 in my car, and everything is fine, except i have what i belive is a small vacuum leak.

the car is making a slight hissing sound, and it gets louder when you turn the car off. the check engine light is also on. i'm probably just going to double gasket it... already have extra gaskets... anyone have similar problems? or have any suggestions? thanks.

-phil

*** 2003 G35s 5a/t / Pearl White ***

 

Hi AznIce... I have the plenum on my sedan and have no leaking issues... I konw when installing the plenum you have to seal the two screw holes inside the air intake chamber... did you do that?

 

You may want to check and see if you got part of the rubber thing around the oil fill squeezed between the upper and lower plenum

Couldnt afford it when young...gonna play when Im old