Welcome to Bimmerfest -- The #1 Online Community for BMW related information! Please enjoy the discussion forums below and share your experiences with the 200,000 current, new and past BMW owners. The forums are broken out by car model and into other special interest sections such as BMW European Delivery and a special forum to voice your questions to the many BMW dealers on the site to assist our members!

Please follow the links below to help get you started!

Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 7 Series / 8 Series > 7 Series DIY

7 Series DIY
Do It Yourself forum dedicated for 7 Series BMW Owners

Thread Tools Display Modes
Old 02-28-2015, 11:21 AM
riff riff is online now
Registered User
Location: Portsmouth, NH
Join Date: Oct 2009
Posts: 69
Mein Auto: 745i, 330Xi
Coolant leak on both sides of air intake manifold


I have a 2002 745i - the only car in the world that combines power, grace, elegance, and beauty - that is approaching 100,000 and as such it's due for some maintenance. While I was perusing the engine bay I noticed coolant on either side of the forward part of the intake manifold - hidden down low in a little cubby hole. I have noticed some minor loss of coolant over the past few months so these two little puddles of coolant are somewhat concerning as they may be symptomatic of a larger issue.

The water pump feels and sounds ok and the coolant transfer pipe weep hole doesn't appear to be leaking - plus they are lower in the engine bay making it hard for it to "leak up" into these two spots (see pictures).

I appreciate any thoughts on what may be causing this. I was getting ready to do the big job of replacing coolant pipe, water pump, thermostat, and a few other items (updated valve cover , gaskets, etc.) but I am hesitant to start until I have a better idea as to what may be causing this.

Thanks for your thoughts - pictures enclosed
Attached Thumbnails
Click image for larger version

Name:	Coolant leak 1.jpg
Views:	15
Size:	129.0 KB
ID:	494978   Click image for larger version

Name:	Coolant leak 2.jpg
Views:	12
Size:	134.7 KB
ID:	494979   Click image for larger version

Name:	Coolant leak 3.jpg
Views:	12
Size:	155.9 KB
ID:	494980  
Reply With Quote


coolant issues, coolant leak, intake manifold, water pump

Forum Navigation
Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 7 Series / 8 Series > 7 Series DIY
Today's Posts Search
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

All times are GMT -7. The time now is 10:38 AM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2015, vBulletin Solutions, Inc.
© 2001-2015 performanceIX, Inc. All Rights Reserved .: guidelines .:. privacy .:. terms