Does anyone know exactly where this pipe in red goes after the fuel pressure regulator on a BMW E46 323i? It has perished and the other end has fell off, and I know it goes to the fuel pressure regulator, but then where? I have pretty much stripped everything off apart from the inlet manifold, as the fuel rail is nay on impossible, but still cannot see where it could go....

 

 

Thanks in advance if anyone can help, it's really urgent!.....

I am Sure the other end of that goes behind the inlet manifold, Its hard to explain but Top right hand corner on pic,

 

Between Bulk head and inlet manifold but its down the back and hard to get too.

 

Sure its normally a really long vacum hose that runs sort of under the fuel rail - manifold.

 

Its been a long time since worked on one so could be wrong though.

I am Sure the other end of that goes behind the inlet manifold, Its hard to explain but Top right hand corner on pic,

 

Between Bulk head and inlet manifold but its down the back and hard to get too.

 

Sure its normally a really long vacum hose that runs sort of under the fuel rail - manifold.

 

Its been a long time since worked on one so could be wrong though.

 

Just looked on google and this is what someone else said....

 

if you reach up under the manifold almost at the fire wall you will feel a vac port sticking out

 

Think he explained it better.

holy shit, I think I know what you mean! I could feel that (after I have removed pretty much everything), but the pipe that fell off is very brittle and a bit like weatabix, but the end of that bit still had about a quarter inch of pipe on and felt very smooth and stiff, and I couldn't feel a hole in the end, so I doubted it, hmmmm, I do hope it is that. I have googled this to death, how did I not find this? Good man Terry

This is a proper forum, 2 days and over 1,000 reads of my posts on various BMW forums and nothing....

This is a proper forum, 2 days and over 1,000 reads of my posts on various BMW forums and nothing....

 

Was it the right one lol, done a few head gaskets on bmw, thats the only vacum hose i can remember being in a crazy place,

 

Hope you sorted it mate.