The message to which you are about to reply is shown first. GO TO REPLY FORM



 VIEW    REPLY TO THIS MESSAGE    PRINT   SAVE 

Actually, yes, 140-160

posted by  JohnMc on  Fri Sep 10 03:30 CST 2004
Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
last visit: Thu Oct 23 07:42 CST 2014
[RELATED]

The crankcase breather attached to the intake manifold is intended to provide a small amount of positive (as opposed to passive I suppose) crankcase ventilation, but typically on an old Volvo engine like that it just has a very small hole that sucks a small amount of air through, and mostly at idle (there is little or no vaccum in the intake manifold with the throttle wide open). So despite the large hose there is really little flow available through that route.

If more crankcase pressure is being generated (by air leaking past the rings) then the air will flow the other way through the PCV system - going out that flame trap and through the other tube and into the intake system upstream of the throttle. That whole gizmo just bolts to the block with a single small bolt underneath and has a large O-ring for sealing. You could just take the whole thing off and soak it in some degreaser.
--
I'm JohnMc, and I approved this message.






USERNAME
Use "claim to be" below if you don't want to log in.
PASSWORD
I don't have an account. Sign me up.
CLAIM TO BE
Use only if you don't want to login (post anonymously).
ENTER CAPTCHA CODE
This is required for posting anonymously.
OPTIONS notify by email
Available only to user accounts.
SUBJECT
MODEL/YEAR
MESSAGE

DICTIONARY
LABEL(S) +
IMAGE URL *
[IMAGE LIBRARY (UPLOAD/SELECT)]

* = Field is optional.

+ = Enter space delimited labels for this post. An example entry: 240 muffler


©Jarrod Stenberg 1997-2022. All material except where indicated.


All participants agree to these terms.

Brickboard.com is not affiliated with nor sponsored by AB Volvo, Volvo Car Corporation, Volvo Cars of North America, Inc. or Ford Motor Company. Brickboard.com is a Volvo owner/enthusiast site, similar to a club, and does not intend to pose as an official Volvo site. The official Volvo site can be found here.