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



 VIEW    REPLY TO THIS MESSAGE    PRINT   SAVE 

B21A Zenith Carb .....more tune up questions 200 1982

posted by  Allanwayne on  Fri Feb 25 02:38 CST 2005
Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
last visit: Sun Jul 8 15:05 CST 2012
[RELATED]

Hello, the quest continues...

There are 2 screws on the back of the distributor (ZS 175 CD). Smaller black on on the left, just beside it is a larger brass one with a spring under it.

Which one is the idle trim screw?

(Neither seem to have any immediate effect on idle speed, nor does the main brass idle speed screw on the intake manifold.)

Also, where exactly is the idle bypass screw? or is possible that my engine is not equipped with the idle bypass system?

Also, I am attempted to rotate the distributor (Bosch JUFU4) clockwise to retard the timing from 15 degrees BTDC to 7, but after loosening and almost removing the locking bolt, it is still seized with rust at the base and will not even budge, even with a bit of prying with a long screw driver. I have doused it with penetrating oil and will try again.
Ideas on getting it loose?

Thanks.






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.