318is steaming?

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

Moderator: martauto

User avatar
Tombo
E30 Zone Newbie
E30 Zone Newbie
Posts: 32
Joined: Sat Aug 29, 2009 11:00 pm

Post Tue Sep 11, 2012 8:41 am

ok so ive got a 1992 318is with around 67k on the clock. For a few days now the water has started to disappear. Yesterday after driving home for about 15 mins steam started coming out the bonnet, i opened it up and it seemed to be coming up from near the bulk head. Im not sure if this car has had the profile thing done in its life. Can anyone give me some ideas. Thanks Tom
User avatar
sparkyE30
E30 Zone Newbie
E30 Zone Newbie
Posts: 62
Joined: Thu Jul 15, 2010 11:00 pm

Post Tue Sep 11, 2012 8:43 am

might just be 1 of the coolent hoses for the heater matrix that has burst.they run into the bulk head from the back of the engine
Grrrmachine
E30 Zone Wiki / Team Member
E30 Zone Wiki / Team Member
Posts: 8043
Joined: Sat Feb 09, 2008 11:00 pm
Location: Warsaw, Poland

Post Tue Sep 11, 2012 9:44 am

Check the carpet in the passenger footwell for dampness to start with; this is where the hoses to the heater matrix come through the bulkhead and turn into plastic pipes, which do crack from time to time.

If it's all dry, open the bonnet and look down at the bulkhead to find the hoses sparky is talking about. .Once you've found them, get the engine warmed up and start looking for where the steam is escaping from.

Also, check the oil cap for mayonnaise to ensure the coolant isn't leaking into the oil; a sign of a much more serious failure.
User avatar
Brianmoooore
E30 Zone Team Member
E30 Zone Team Member
Posts: 49360
Joined: Mon Jan 10, 2005 11:00 pm

Post Tue Sep 11, 2012 10:02 am

Hose from the back of the head to the bottom heater stub pipe lives in a harsh environment and is largely hidden from view, so is often neglected.
User avatar
Tombo
E30 Zone Newbie
E30 Zone Newbie
Posts: 32
Joined: Sat Aug 29, 2009 11:00 pm

Post Tue Sep 11, 2012 12:25 pm

Thanks lads
I'll have a good look, around there. there was far too much steam to see where it was comimg from yeserday. No coolent mixed with the oil though so thats a kind of good sign i hope.
User avatar
Tombo
E30 Zone Newbie
E30 Zone Newbie
Posts: 32
Joined: Sat Aug 29, 2009 11:00 pm

Post Sat Sep 22, 2012 3:42 pm

brianmooore you were right about the hose from the head. All done now running fine.
Thanks