This may be a simple question for the experts but I do not know what this is. It looks like an adjustment and it is located outboard of the alternator and above the belt tensioner.

What is it?
http://www.dieselplace.com/forum/uploads/3E5_DSCF0012.jpg

It's a schrader valve test port for connecting a fuel vacuum/pressure gauge. I also use this for bleeding the fuel system with my lift pump when changing filters.


http://community.webshots.com/s/image3/1/51/8/73315108BBKdiI_ph.jpg


http://community.webshots.com/s/image2/6/61/60/95466160coWkql_ph.jpg


more pics (http://community.webshots.com/album/73314886FLnSco)


http://www.dieselplace.com/forum/smileys/Geek.gif Edited by: jbplock

Bill,


Stop showing off. Besides, he is clearly point to the cap for the schrader valve. http://www.dieselplace.com/forum/smileys/HiHi.gif


Chris

http://www.dieselplace.com/forum/smileys/Big Smile.gifhttp://www.dieselplace.com/forum/smileys/Big Smile.gifhttp://www.dieselplace.com/forum/smileys/Big Smile.gif

Thanks! I was not sure if it was an adjustment or a dust cap. I did not want to go turning it untill I was sure I was not going to up the turbo boost or something.

I wanna know what that plastic black box is with the hose clamped to it to the left in the pic .....

Mac http://www.dieselplace.com/forum/smileys/Embarrased.gif

EGR Stuff ?? http://www.dieselplace.com/forum/smileys/Confused.gif

I doubt it, hes from georgia

I do believe we all have them ..... I'll have to check my truck ....

Mac

thats the pcv box on the 01's. 02 and up is part of the alt bracket.

I took the cap off mine today and asked the same thing "What is this?" The cap and the fitting both had what looked like and smelled of fuel. Is it normal for this to have some fuel coming out. It is not leaking out from under the cap at all.

... The cap and the fitting both had what looked like and smelled of fuel.* Is it normal for this to have some fuel coming out...

I beleive it's normal ... I noticed the fuel in mine the first day I brought it home... without knowing what the cap was I just took it off http://www.dieselplace.com/forum/smileys/Geek.gif. Since then when ever I connect or disconect the Kent Moore gauge a little fuel is released and pools in the schrader valve opening.