318ti.org forum

Go Back   318ti.org forum > Technical, Maintenance and Modifications > Engine

Notices

Engine Tuneups, chips, wires, spark plugs.

.
» Recent Threads
1999 M-Sport For Sale
12-31-2023 05:10 PM
Last post by Coop540iT
03-23-2024 06:39 PM
1 Replies, 95,680 Views
Once again 318ti owner...
03-20-2024 12:39 PM
Last post by two30grain
03-22-2024 02:04 PM
1 Replies, 58,618 Views
What brakes do I...
03-20-2024 03:27 PM
Last post by huirtera
03-20-2024 03:27 PM
0 Replies, 56,040 Views
M50+manual swap bastard...
03-01-2024 11:00 PM
Last post by Andy318
03-18-2024 02:34 PM
3 Replies, 130,941 Views
Reply Share/Bookmark
 
Thread Tools Display Modes
Old 06-16-2013, 12:37 AM   #1
surechap
Member
 
Join Date: Jun 2012
Location: Central Valley
Posts: 65
iTrader: (0)
Default Missing Vacuum hoses?

I noticed my egr valve was pinging again, so I decided to check the parts catalog to get a price check. That's when I noticed I was missing quite a bit of my vacuum system.


When I first bought the car the air pump was busted and I had a dirty egr valve. Also one of the hoses was busted and not connected. I put two and two together and just connected a new hose where I thought it would go, directly to the engine. Hose 9 in that case would go straight to where hose 1 would be skipping parts 2-8.

Is this just a fault in the diagram am I really missing parts parts 2-8? My 318ti is 1997. I mean how could the previous owner lose that much? Also, could this be the reason why my egr valve keeps getting stuck and my fuel economy is bad?

Here's what is described in the diagram I just copied and pasted from the parts site.
No. Description Supplement Qty From Up To Part Number Price Notes Photo
01 Hose 470MM 1 11731435862 $27.44 +core
02 T-CONNECTOR 1 11721439973 $1.07
03 VACUUM HOSE BLACK 3,5X1,8 1 11727545323 $14.82
03 VACUUM HOSE BLACK 3,3X1,75 1 51731257971 ENDED
03 VACUUM HOSE BLACK 3,3X1,8 1 11747797175 ENDED
04 non-return valve 1 11611312737 $17.70
05 VACUUM HOSE WHITE 3,3X7 1 51731259951 ENDED
05 VACUUM HOSE WHITE 3,3X1,8 1 11747797177 $17.14
06 Rubber Mounting 1 13411705564 $2.40 +core
07 CONTAINER 1 11611312762 $7.60
08 Bracket, vacuum reservoir TLEV 1 11731433822 $5.84
09 VACUUM HOSE WHITE 3,3X7 1 51731259951 ENDED
09 VACUUM HOSE WHITE 3,3X1,8 1 11747797177 $17.14
surechap is offline   Reply With Quote
Old 09-16-2014, 02:59 AM   #2
pilsberry
Member
 
Join Date: Aug 2003
Location: ATL
Posts: 43
Vehicles
iTrader: (0)
Default Missing items

Surechap,
I'm having similar issues. The line from exhaust check valve runs directly to valve cover vacuum connection instead of electronic control unit.

I will post if I learn anything.

Let me know if you were able to resolve your problems.
Thanks,
Bryan
I'm having air pump issues and cam position sensor errors that seem to be related, but not sure.
pilsberry is offline   Reply With Quote
Old 09-16-2014, 03:17 AM   #3
surechap
Member
 
Join Date: Jun 2012
Location: Central Valley
Posts: 65
iTrader: (0)
Default

Quote:
Originally Posted by pilsberry View Post
Surechap,
I'm having similar issues. The line from exhaust check valve runs directly to valve cover vacuum connection instead of electronic control unit.

I will post if I learn anything.

Let me know if you were able to resolve your problems.
Thanks,
Bryan
I'm having air pump issues and cam position sensor errors that seem to be related, but not sure.
Pilsberry, it's been a while, but I'll try to remember. The diagram is correct the rest of it is hidden under the manifold.
surechap is offline   Reply With Quote
Old 09-16-2014, 03:23 AM   #4
surechap
Member
 
Join Date: Jun 2012
Location: Central Valley
Posts: 65
iTrader: (0)
Default

Quote:
Originally Posted by pilsberry View Post
Surechap,
I'm having similar issues. The line from exhaust check valve runs directly to valve cover vacuum connection instead of electronic control unit.

I will post if I learn anything.

Let me know if you were able to resolve your problems.
Thanks,
Bryan
I'm having air pump issues and cam position sensor errors that seem to be related, but not sure.
Pilsberry, it's been a while, but I'll try to remember. The diagram is correct the rest of it is hidden under the manifold. Hose 9 does connect to 7 even though 7 is represented in the diagram inaccurately; it's opening is actually horizontal like the rest of the cylinder. Look up my old post on how to solve the pump issue. Also it's a good idea to clean the egr or replace it.
surechap is offline   Reply With Quote
Old 09-16-2014, 02:16 PM   #5
pilsberry
Member
 
Join Date: Aug 2003
Location: ATL
Posts: 43
Vehicles
iTrader: (0)
Default Vacuum mystery

Surechap,
Thanks for response. Your info solves part of my problem in that the items are hidden.
But, those two hoses on the electronic valve (10) both run back under the manifold (on my car). Also on my car, hose 13 runs to a barb on the front of the intake manifold. This is in error I think, as it applies suction to the EGR valve all the time. But I don't know what I would do with the other hose that would be freed up if I connect 13 to 10. I need to find out what this vacuum source is supposed to attach to. It is currently holding the valve open at all time and ruining my air pumps.
Thanks,
Bryan
pilsberry is offline   Reply With Quote
Old 09-16-2014, 02:37 PM   #6
pilsberry
Member
 
Join Date: Aug 2003
Location: ATL
Posts: 43
Vehicles
iTrader: (0)
Default Update

So, I swapped the hoses and noted little change in engine performance. Perhaps a high idle but the engine is cold. I would still like to confirm this is correct as I see no reference to the vacuum source on the front of the manifold.
pilsberry is offline   Reply With Quote
Reply

Bookmarks


Currently Active Users Viewing This Thread: 2 (0 members and 2 guests)
 
Thread Tools
Display Modes

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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Vacuum leak / bad idle Romak Lounge 1 04-19-2013 10:28 PM
swap almost done, need help with a few hoses, etc!! 318tian Engine Swaps 3 01-30-2012 05:13 AM
One more way to find a vacuum leak 79glide Maintenance 2 10-08-2010 01:47 PM
SAP (Secondary Air Pump) Repairs cali-ti Knowledge Base 5 01-23-2010 11:10 PM
Normal M44 Engine vacuum WhoNew Maintenance 4 07-24-2008 09:05 PM


All times are GMT +1. The time now is 10:47 AM.


.
Powered by site supporters
vBulletin Version 3.8.8
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Copyright ©1999 - 2024, 318ti.org
© vBadvanced CMPS v3.2.2
[page compression: 82.28 k/95.98 k (14.28%)]

318ti.org does not warrant or assume any legal liability or responsibility for the accuracy, completeness, or usefulness of any information or products discussed.