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



 VIEW    REPLY TO THIS MESSAGE    PRINT   SAVE 

Lifter maintenance - B234 700 1990

posted by  pittroj on  Tue Jul 26 15:05 CST 2016
Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
last visit: Mon Oct 20 07:18 CST 2014
[RELATED]


I second the MMO. It is old school stuff that works. I had an excessive crankcase pressure problem on a 940 T. I couldn't figure out what was causing it. I finally put about an ounce of MMO in each cylinder and let it sit all night. I also put a small amount in the oil and drove it maybe 30 miles and then changed the oil. The difference was night and day! No more excess crank pressure, and it now runs like a scalded dog! The compression was blowing by the rings, into the crankcase causing the high crank pressure. If additives don't work, then you may have to do a valve adjustment as Jim said. Also! Run MMO in the gas tank. It will keep the top end lubed, along with lubricating the fuel pumps and keeps carbon from building up in the combustion chamber.

I know this as I had pinging, or detonation on my 245 wagon, with the engine under a load (like too high a gear on an uphill) After a few tanks of gas, I noticed no more pinging!






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.