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



 VIEW    REPLY TO THIS MESSAGE    PRINT   SAVE 

Volvo 240 Valve Adj : causing Uneven Hot idle ?? 200

posted by  someone claiming to be Tjtraver on  Thu Dec 20 07:09 CST 2007 [RELATED]

Symptoms: Car starts and runs fine and smoothly at all speeds, hot and cold.
1) Exhaust note when cold and at idle is smooth.
But,
2) After the car warms up the car still idles / revs fine, but engine idles unevenly (but not like a spark plug misfiring but rather almost as if the mixture was off ) and the exhaust note is very "sputtery".

The ignition system is fine, I just pulled all the plugs and they are identical color, so no probs there. Nor are they sooted or oiled up.

I'm wondering : Might one of the exhaust valves have worn to the point where it has have no clearance, which in effect is not allowing the exhaust valve to fully seat once the engine is hot ?

I've not yet checked valve clearances, just wondering if anyone as ever heard of this problem or has other ideas ? I've also thrown some fuel injector cleaner in as maybe an injector is partically clogged. Though that wouldn't accont for the sputtery exhaust, or differnce from hot to cold.

Car has 210,000 miles, I've always changed oil regularly and performed all maint, But the valves have never been checked nor adjusted.






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.