Coolent issues

Need technical Q/A then you're in the right place

Moderator: martauto

Post Reply
User avatar
MiniC
E30 Zone Newbie
E30 Zone Newbie
Posts: 127
Joined: Sat Jan 28, 2017 11:00 pm

Wed Aug 01, 2018 8:33 pm

Hey zone

My top coolent pipes burst the other day fitted it and sorted the coolent ran the fans was warm so was happy.
Today it really overheated and the fans blew cold. I removed the bleed screw and mostly coolant came out but my header tank is guessing water out of the top have I got a big air lock that's just came through? Any help would be much appreciated.
SeanOB
E30 Zone Newbie
E30 Zone Newbie
Posts: 156
Joined: Mon Oct 12, 2015 11:00 pm
Location: North Wales. UK

Wed Aug 01, 2018 11:27 pm

I don't know if this is overkill, but I usually add coolant to the hoses themselves first to get rid of as much air as possible. Did you get the front end up gradient, or better yet up on jack stands after? Really helps to get any air up to that bleed screw.
1991 325i SE sedan
User avatar
paultv
E30 Zone Squatter
E30 Zone Squatter
Posts: 1541
Joined: Mon Apr 21, 2014 11:00 pm
Location: Auf dem Schnee: Germany

Thu Aug 02, 2018 7:02 am

When you bleed, make sure the heater system is on full hot, loads of air could be trapped causing air lock, just a heads up.

Paul :-)
4th May 1990 325i Convertible.

BMW E30 Cabriolet Best Mod Ever:

https://bmwe30cabriolet-wdm.blogspot.com/
User avatar
aimlessrock
E30 Zone Squatter
E30 Zone Squatter
Posts: 1821
Joined: Sun Dec 06, 2009 11:00 pm
Location: Manchester

Thu Aug 02, 2018 9:20 am

m20?
E30 320i Convertible (1989)
190 Mercedes (1988)

"there is nothing more expensive than a cheap E30"
User avatar
MiniC
E30 Zone Newbie
E30 Zone Newbie
Posts: 127
Joined: Sat Jan 28, 2017 11:00 pm

Thu Aug 02, 2018 12:04 pm

Yeah also thanks for all the help guys!
User avatar
Satan
Old Skooler
Old Skooler
Posts: 2489
Joined: Thu Nov 16, 2017 11:00 pm
Location: Formally SexyLady and Diable

Thu Aug 02, 2018 12:19 pm

As above and squeeze the top hose to help circulate the coolant.
User avatar
aimlessrock
E30 Zone Squatter
E30 Zone Squatter
Posts: 1821
Joined: Sun Dec 06, 2009 11:00 pm
Location: Manchester

Thu Aug 02, 2018 3:05 pm

elevation, coolant in the hoses help but i would invest in a vacuum bleeder- saves a lot of hassle.
E30 320i Convertible (1989)
190 Mercedes (1988)

"there is nothing more expensive than a cheap E30"
User avatar
MiniC
E30 Zone Newbie
E30 Zone Newbie
Posts: 127
Joined: Sat Jan 28, 2017 11:00 pm

Thu Aug 02, 2018 8:38 pm

Alright thanks guys. My altinator belt was rough so changed that and ran the car to warm it up before bleeding. It's now hot at the fans and I'm not getting any air through I'm confused!
User avatar
arrisbmw
E30 Zone Regular
E30 Zone Regular
Posts: 466
Joined: Sat May 06, 2017 11:00 pm

Thu Aug 02, 2018 8:58 pm

whatdo you mean not getting any air through
User avatar
arrisbmw
E30 Zone Regular
E30 Zone Regular
Posts: 466
Joined: Sat May 06, 2017 11:00 pm

Thu Aug 02, 2018 8:59 pm

there is a post on here telling you how to bleed 6 pot , by Brian moore iirc
Post Reply