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



 VIEW    REPLY TO THIS MESSAGE Replies to this message will be emailed.    PRINT   SAVE 

Re: no compression in one piston. why? 700 1990

posted by  someone claiming to be Paul Bente on  Fri Mar 30 09:56 CST 2001 [RELATED]

I have pulled the head on a B234F. It is a dual cam with the cam lobes driving the hydraulic lifters directly, so no rocker arms. The hydraulic lifters make this diagnosis dificult. If one or both of the 2 exhaust valves are stuck, hope they are not stuck too far down as the piston will interfere and bend them. A stuck and bent exhaust valve is pretty likely with this engine. I think the best non-invasive diagnosis is the leak down test as Don Foster suggested. Let us know what you find.





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.