Go Back   United Bimmer Community - BMW Forum > UnitedBimmer- Model Categories > 5-Series > E12, E28, E34, E39, E60
FAQ Members List Calendar Advertise With Us Mark Forums Read

E12, E28, E34, E39, E60 General discussion and technical help for all year 5 series cars.

Reply
 
Thread Tools
Old 10-22-2006, 09:07 PM   #1
zole2112

Name: zole2112
Title: United Newb
Status: Offline
Join Date: Sep 2006
User not setup in Rate My Car.
Click here to set it up.
Your Ride: 1997 540i
Coolant bleed problem - 1997 540i

I was bleeding my coolant system after changing my water pump and hoses, had the expansion tank cap off and the bleeder screw out. Added coolant to expansion tank as coolant and bubbles bled out of bleeder hole, heater on max, engine at 2000 rpm. All was going well, lots of air escaping when suddenly coolant started coming out of the expansion filler hole and the bleeder hole. Don't know what the problem is...thermostat?

Any help would be greatly appreciated!
  Reply With Quote
Old 10-22-2006, 11:09 PM   #2
xsperf
 
xsperf's Avatar

Name: xsperf
Title: United Baller
Status: Offline
Join Date: Apr 2005
Location: Syracuse, NY
Rate My Car: 185 / 340
Your Ride: 95 325is
just maybe you overfilled it, coolant is definately supposed to come out of the bleeder screw hole, i wouldnt worry about it honestly, i would just bleed it again, and once a tiny bit of coolant coems out the bleeder hole, stop it, and then see if the car overheats
__________________

Quote:
Originally Posted by c1apton
I keep forgetting that - I have a great memory but it doesn't last long

CRS disease = Can't Remeber Shit
  Reply With Quote
Old 10-22-2006, 11:23 PM   #3
c1apton
 
c1apton's Avatar

Name: c1apton
Title: Upgraded Member
Status: Offline
Join Date: Oct 2005
Location: Pompano Beach,Fl /Edina,Mn
Rate My Car: 134 / 340
Your Ride: 93 E34
That's how you know the system is full when air comes out then coolant. When coolant finally trickles out = air is gone.
  Reply With Quote
Old 10-23-2006, 05:58 AM   #4
zole2112

Name: zole2112
Title: United Newb
Status: Offline
Join Date: Sep 2006
User not setup in Rate My Car.
Click here to set it up.
Your Ride: 1997 540i
The problem is that I continued to see air bubbles coming out of the bleeder hole up to the point where coolant flowed out of the expansion tank so the air was not completely purged. According to the DIY on steeringzone.com I should be able to replace the bleeder screw after the bubbles end and see the coolant flowing back into the expansion tank through the return line.
  Reply With Quote
Old 10-23-2006, 06:13 AM   #5
zole2112

Name: zole2112
Title: United Newb
Status: Offline
Join Date: Sep 2006
User not setup in Rate My Car.
Click here to set it up.
Your Ride: 1997 540i
Acutually that was on understeer.com, sorry...
  Reply With Quote
Old 10-23-2006, 06:31 AM   #6
Dudesky

Name: Dudesky
Title: Run Far
Status: Offline
Join Date: Apr 2005
Location: Jersey City, NJ
Rate My Car: 106 / 340
Your Ride: E39 530iA
To see if your t-stat is working properly, feel and squeeze the top radiator hose. If there's pressure while the engine is running warm, then coolant is flowing through it and it's opening properly. You may have just gotten a large air pocket come out. Try it again. Your temp gauge should also give you a clue as to whether or not there's a problem.

Personally, I find it easier to leave the bleeder screw on, and watch the flow back into the expansion tank. When you see a steady solid stream at around 2500rpm with the heat full on, you're good to go. If it's coming out in spurts, then you're not done yet.
__________________

Last edited by Dudesky; 10-23-2006 at 06:33 AM..
  Reply With Quote
Old 10-23-2006, 06:31 AM   #7
c1apton
 
c1apton's Avatar

Name: c1apton
Title: Upgraded Member
Status: Offline
Join Date: Oct 2005
Location: Pompano Beach,Fl /Edina,Mn
Rate My Car: 134 / 340
Your Ride: 93 E34
The method I prefer is to bleed it as you did, put a few miles on it, and re bleed it a couple of times after a couple of driving cycles. This way it takes into account the thermostat going through a couple of cycles and the heater circulating
  Reply With Quote
Old 10-23-2006, 06:55 AM   #8
zole2112

Name: zole2112
Title: United Newb
Status: Offline
Join Date: Sep 2006
User not setup in Rate My Car.
Click here to set it up.
Your Ride: 1997 540i
Thank you for your help, I will rebleed the system again today.
  Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

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 -5. The time now is 01:40 AM.

A vBSkinworks Design

 
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Copyright © 2005-2013 UnitedBimmer.com