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



 VIEW    REPLY TO THIS MESSAGE    PRINT   SAVE 

Fast Idle 120-130

posted by  mjamgb on  Thu Sep 23 06:39 CST 2004
Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
last visit: Tue Sep 4 14:53 CST 2012
[RELATED]

Is this a recent occurance? What was the last thing you altered or worked on?

"blipping the throttle" and "restarting" bringing the idle down sounds a lot like a sticky butterfly or over-run valve in the butterfly. If this has been happening from "day one" with this engine combo (or since the carbs were last put on) it could be a mis-aligned butterfly in the shaft or a binding interlink between the carbs (or the afore mentioned overrun valve).

The float difference is not a major concern (although you are describing H-type floats and not HS type floats) as the level of the float is adjusted with the solid type floats by altering gasket thickness under the needle valve. This can be done regardless of the cover type.

I'd also check to ensure you have proper clearance between the fast idle cam and the throttle lever. Also, try separating the carbs by loosening the interlink clamps. If this is mis-adjusted you can get one carb being forced open, even with the throttle closed on the other.

Mike!






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.