E90Post
 


 
BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Boost Leak Test



Reply
 
Thread Tools Search this Thread
      08-06-2020, 09:39 PM   #1
mikeyoooooo
Private First Class
United_States
28
Rep
169
Posts

Drives: 2013 335is MT
Join Date: Apr 2016
Location: New York

iTrader: (0)

Boost Leak Test

I'm looking to do a boost leak test this weekend. I have 2 ends to cap of the intakes to pressurize the system but not sure if there's anything else that I need to cap off? I'm also running both BMS catch can (boost and vacuum). Do I need to do anything with that?

I tried doing some research but I couldn't find anything with my specific application. Any advice would be great. Thanks.
Appreciate 0
      08-07-2020, 05:47 PM   #2
mweisdorfer
Major General
mweisdorfer's Avatar
United_States
1903
Rep
6,968
Posts

Drives: 2007 Black/Black 335i e90
Join Date: Apr 2011
Location: Holly, MI

iTrader: (0)

Garage List
2007 BMW E90 335i  [0.00]
2008 bmw x5  [0.00]
Quote:
Originally Posted by mikeyoooooo View Post
I'm looking to do a boost leak test this weekend. I have 2 ends to cap of the intakes to pressurize the system but not sure if there's anything else that I need to cap off? I'm also running both BMS catch can (boost and vacuum). Do I need to do anything with that?

I tried doing some research but I couldn't find anything with my specific application. Any advice would be great. Thanks.
It's easier to do a smoke test 😉
Appreciate 0
      08-11-2020, 04:39 PM   #3
mikeyoooooo
Private First Class
United_States
28
Rep
169
Posts

Drives: 2013 335is MT
Join Date: Apr 2016
Location: New York

iTrader: (0)

Probably but the leak doesn't start until around 17 psi. I'm not sure if a smoke leak test would show it.
Appreciate 0
      08-11-2020, 07:04 PM   #4
BM3Rrrr
Davy Jones, Giant Squid
BM3Rrrr's Avatar
No_Country
271
Rep
913
Posts

Drives: a Pirate Ship
Join Date: Jun 2015
Location: The Isle of Tortuga

iTrader: (0)

Quote:
Originally Posted by mikeyoooooo View Post
Probably but the leak doesn't start until around 17 psi. I'm not sure if a smoke leak test would show it.
How do you know that?
__________________
2010 e90 335i LCI - xHP - Mishimoto - BMS - CPe - Turbosmart - MHD - Eibach - Koni - VMR - LUX
Appreciate 0
      09-11-2020, 08:47 PM   #5
mikeyoooooo
Private First Class
United_States
28
Rep
169
Posts

Drives: 2013 335is MT
Join Date: Apr 2016
Location: New York

iTrader: (0)

I don't know for sure but it doesn't hold boost passed that. I've recently replaced both boost solenoids and vacuum lines but still having the issue. Any suggestions on how to either do a boost leak test or smoke test? I heard the plastic intake pipes can only hold about 10 psi.
Appreciate 0
      09-12-2020, 02:18 PM   #6
relative4
Major
United_States
611
Rep
1,272
Posts

Drives: '08 335xi E90 MT stage 1+
Join Date: Feb 2019
Location: Denver, CO

iTrader: (0)

To test that high, you need to disconnect the turbo outlet from the intercooler and test just the intercooler on down.
Appreciate 0
Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -5. The time now is 04:21 AM.




e90post
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST