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DISCUSSION => Engine + Driveline => Topic started by: e30Andym42 on April 02, 2016, 10:55:37 AM

Title: Quick Throttle Body Question
Post by: e30Andym42 on April 02, 2016, 10:55:37 AM

I had a vacuum leak from my throttle body to intake manifold gasket, so I removed the throttle body to fix it.  I never actually spent much time looking at the throttle body and I was wondering if it was normal for this nozzle on the throttle body to vent to atmosphere.

(http://i292.photobucket.com/albums/mm26/e30Andym42/Mobile%20Uploads/IMG_20160402_113053.jpg) (http://s292.photobucket.com/user/e30Andym42/media/Mobile%20Uploads/IMG_20160402_113053.jpg.html)

Title: Re: Quick Throttle Body Question
Post by: sh123 on April 02, 2016, 11:24:56 AM

Pretty sure that goes to fuel regulator? Hard to tell from picture angle but im sure it does on my m44

Title: Re: Quick Throttle Body Question
Post by: iPee on April 02, 2016, 11:25:44 AM

IIRC that should be connected to your FPR.

(http://i1067.photobucket.com/albums/u434/VivekRodricks/Messrouting.jpg)

Title: Re: Quick Throttle Body Question
Post by: colin86325 on April 02, 2016, 08:00:28 PM

Other guys have it right--there's a thin rubber hose that goes to the Fuel Pressure Regulator that fits here.
When you remove the throttle body or intake manifold it is something that is commonly neglected during reassembly.

Title: Re: Quick Throttle Body Question
Post by: e30Andym42 on April 03, 2016, 09:36:23 AM

Thank you so much guys!  I'm not sure I ever had one of those hoses hooked up since I bought the car back in 2008.  Upon one of many disassemblies, I saw the remnants of a small hose which was resting on the intake manifold, and finally I know what it was.  I can't believe I missed that for so long...