318ti.org forum

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

Notices

Engine Tuneups, chips, wires, spark plugs.

.
» Recent Threads
95 318ti in Albuquerque
12-11-2018 07:26 AM
Last post by dynagroove
Today 03:21 AM
4 Replies, 359 Views
MOD Request - Vote for...
Yesterday 07:06 PM
Last post by dasauto88
Yesterday 07:06 PM
0 Replies, 68 Views
Belt squeaking after...
11-27-2018 11:56 PM
Last post by BRADESTAR
Yesterday 02:47 AM
6 Replies, 674 Views
FS: '98-Manual-169k...
12-11-2018 08:04 PM
Last post by Boston Green
12-11-2018 08:04 PM
0 Replies, 148 Views
WTB 5 speed 318ti, am...
12-11-2018 05:53 PM
Last post by KASZ
12-11-2018 05:53 PM
0 Replies, 132 Views
New here so lets arc you...
11-09-2018 08:56 AM
Last post by 318tiFatherFigure
12-11-2018 10:59 AM
2 Replies, 617 Views
Oil Filter Housing Leak...
02-14-2008 09:21 PM
Last post by Locus7
12-11-2018 01:06 AM
118 Replies, 80,988 Views
Is this a clubsport?
12-09-2018 06:54 AM
Last post by dranthony
12-10-2018 08:44 PM
5 Replies, 387 Views
California Top Trim...
07-16-2014 08:59 AM
Last post by 3DGE
12-09-2018 09:37 PM
9 Replies, 4,595 Views
M42 / M44 loose...
12-07-2018 08:10 PM
Last post by Frach23
12-07-2018 09:34 PM
1 Replies, 404 Views
Reply Share/Bookmark
 
Thread Tools Display Modes
Old 05-18-2018, 06:08 PM   #1
cocofunk
Junior Member
 
Join Date: Nov 2017
Location: San Jose, CA
Posts: 23
iTrader: (0)
Default Firewall to tranny coolant leak. heater core?

I have a coolant leak from the rear of the engine, firewall, which drips onto the tranny and onto the floor from the tranny.

I checked the plastic "Y connector" which bolts onto the head, and it does not seem to be that. That connector is on the passenger side, and my leak appeears to be more on the driver side. Additionally, I see moisture/water seeping from the heater core plastic connection (the one at the firewall) which connects the hoses to the heater core.

Is this leak common? How to address this? New heater core connection part needed? Is it a bad idea to bypass the heater core since I will be using this car for track anyway?

Looks like 6 on this diagram. http://www.realoem.com/bmw/enUS/show...diagId=64_0663

Also FYI - car has been sitting for months and I have replaced, H2O pump, tstat with housing, timing cover gaskets, front seal, rear seal, oil pan gasket, oil filter housing gasket, oil filter housing bush. Now it turns right on, no prob, just have this leak - may have happened when dropping/rising the engine when doing the oil pan job.
cocofunk is offline   Reply With Quote
Old 05-18-2018, 10:24 PM   #2
spidertri
Senior Member
 
spidertri's Avatar
 
Join Date: Apr 2007
Location: Elizabeth City, NC
Posts: 3,832
Vehicles
iTrader: (9)
Default

Not sure that it's a common leak but I do recall seeing writeups where people have replaced the connectors (and the whole heater core).

I'd keep the heater, if you ever have a humid track day it's nice to use the heat to clear the windshield. That and when you have heat blowing you know the cooling system is working, lol.
__________________
~Dave~

98 328ti Morea Grun slicktop
13 JGC WK2 Deep Cherry

Search | RealOEM
spidertri is offline   Reply With Quote
Old 05-18-2018, 10:32 PM   #3
ElmoPerkins
Member
 
Join Date: Oct 2016
Location: GA
Posts: 31
iTrader: (0)
Default

Yep. #6 is where the leak is coming from most likely. I had to chase mine down recently. It leaks behind the cowl and runs down the water drains making it look like the back of the engine. Replace #6 with new o rings and be careful when tightening it onto the heater core. I was lucky and didnít need to replace the heater core after replacing #6. Hope this helps.
__________________
1995 BMW 318ti
2014 VW GLI Edition 30
ElmoPerkins is offline   Reply With Quote
Reply

Bookmarks


Currently Active Users Viewing This Thread: 1 (0 members and 1 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
Heater Core Problem? XxKEITHxX Lounge 10 05-17-2012 05:42 AM
coolant leak? FNEG Maintenance 13 11-28-2011 02:59 AM
WTB Heater Core Tubes from 9/96+ ti dave45056 US and North America 1 10-27-2009 09:19 PM
Coolant Leak ALock Maintenance 3 06-25-2009 02:08 AM
car overheating coolant dripping out...no heat to heater eurowerkz Maintenance 15 05-26-2006 08:51 PM


All times are GMT +1. The time now is 03:28 AM.


.
Powered by site supporters
vBulletin Version 3.8.8
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.
Copyright ©1999 - 2018, 318ti.org
© vBadvanced CMPS v3.2.2
[page compression: 72.67 k/84.33 k (13.82%)]

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