[cn555ic]

Originally Posted by bullitstang18

YEP just did this to my manifold as well. i glued the nipple back on and it works fine for the moment but im worried. most likely i will tap a brass nipple into the manifold but i just want to know what is this line for. it runs into the synapse bov. what would happen if i was driving and that hose broke off? thanks guys first post here

Boost leak...and then a limp mode...This needs to be fixed either with a brass tap or change out the whole manifold...

[bullitstang18]

i would buy a new manifold if i could find one cheap but im not sure where i can do that? thanks again


* i ended up coming out in the morning and the glue was holding pretty well, i got some jb plastic weld and added another coat i think ill keep an eye on it for now. before i tap into my manifold. im sure ill end up doing it eventually. Thanks

[TommyLights]

Anyone ever ever wind up doing the brass tap? Where did you tap? Did it work fine and where'd you get the replacement tap from? I have the same problem now, and was thinking of Home Depot or Strauss for the brass fitting, but I dunno....

Thanks.

[creaminz]

I broke mine as well and Gorilla glued it!!

[TommyLights]

Yah did the same thing for now but really think tapping is the right fix, just don't know where to tap.....

[Jeff@TopGearSolutions]

You guys are relentless.

The easiest way to get that vac line off is to push in and grab the edge of the vac hose to pull off.

The stock vac lines are like a chinese finger trap, if you pull on them it just gets tighter.

So you need to reduce the tension by pushing in, grabbing the edge of the line nearest the manifold and pulling from the edge of the vac line out, not pulling the actual line itself (farthest from the manifold).

Hope that makes sense.

[TommyLights]

^^^Very nice but too late for me. I actually asking anyone who has tapped a new vacuum fitting to chime in as to where they tapped.

[MikeyComputers]

put ur car back to stock use ur warranty????

[s2k_335i]

highly doubt dealer will pay for it.

[Never-Enough]

Originally Posted by cn555ic

Boost leak...and then a limp mode...This needs to be fixed either with a brass tap or change out the whole manifold...

jb weld should hold it just fine. I used jb weld on the oil pan in 1 of my old cars many years ago & it never leaked again.

[M3 Eater]

I would take the old manifold off and practice working on your baby. Have this be the first project! Just drill the spot where the nipple broke off, make it a bit bigger and get you a threaded brass nipple. Screw it in there and use the jb weld all around the threads on the way in. You will have a spare manifold, better than new, with a heavy duty boost nipple. The fun part is, you already have another one so there is no pressure to get it right... have fun with it and keep it as a spare or sell it! Lots of guys talking about direct injection methanol and a spare manifold with a busted nipple is the perfect project piece. I know 10 guys that would buy that from you just so they could play with it!

[s2k_335i]

I think something like this is good for the job.
1/8 npt male x 3/16" hose barb
common size for wastegate control or intake vacuum/boost plumbing

[Bursaliozer]

I know this is an old post but figured maybe someone else is having this issue.


I just found out that this was the cause of my boost leak. Been looking for that leak forever!! The previous owner glued it and the glue got in the brass hose and was clogged.

I just used a small hose that was the diameter of that hole and after T-ing it to the main hose, i jammed the other end in and it was a tight fit. No more air leak.

[335NJ]

Originally Posted by Bursaliozer

I know this is an old post but figured maybe someone else is having this issue.


I just found out that this was the cause of my boost leak. Been looking for that leak forever!! The previous owner glued it and the glue got in the brass hose and was clogged.

I just used a small hose that was the diameter of that hole and after T-ing it to the main hose, i jammed the other end in and it was a tight fit. No more air leak.

Nice, I'd at least put some JB around the hose where it goes into the manifold for a seal. Best thing to do is pull the manifold and drill/tap a brass fitting.

Nice catch though

[Bursaliozer]

Ahh nice and fast now
Crazy how a small vacuum leak could cut the power so much. I will have to log this weekend and see how she's running.

[MasterWang]

Why do people replace that line if the risk of breaking off the nipple is so high?
I just reused all the lines since they seemed to be in good shape.

I have replaced the vacuum lines on the other side of the engine bay. The easiest way was to cut a slit on the line where it meets the nipple and pretty much peel it off.

[MMM335]

arghh done this, killed my battery in the process of removing some how... probably cus i left boot open.

Got the new barb in and expoxied, now i can't seem to get the manifold back on.. so i gave up for today. Any tips??

sorry about bumping of an old thread!

Eat your Wheaties and try again...you gotta wrestle that rear inlet out of the way in most situations.

[MMM335]

Thats what im worried about, that my wheeties might end up blowing out my bicep like pop eye and breaking it. I gave it a break and decided id tackle it tmoz.