BMW Werkz banner

Valve cover hose

1K views 3 replies 3 participants last post by  CBA 
#1 ·
What flows through the hose that connects to the valve cover of a 1990 525?

It appeared to have been leaking but now i saw that the part description was "breather hose" so im not so sure if it was leaking now....

thanks :)
 
#2 ·
pcv?
 
#3 ·
It's the crankcase breather hose which can and will leak oil. Air is what mostly flows through the hose (basically a big vac hose) but it is accompanied by oil. Those hoses get old, dry rotted and cracked from heat.
 
#4 ·
in other words blow by.. just replace the hose no worries..
 
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top