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



 VIEW    REPLY TO THIS MESSAGE    PRINT   SAVE 

NOX problem update 200

posted by  yama on  Wed Dec 31 02:59 CST 2003
Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
last visit: Fri Oct 25 05:26 CST 2013
[RELATED]

Did a little more troubleshooting into my high NOX problem today. Checked both ignition and fuel injection codes for failures. Did have the 2-3-1 fuel system compensating for rich or lean air/fuel mixture with no check engine light igniton had no fail codes. Did the propane test with no change in engine speed. Pulled out back spark plug and noticed some wetness. My guess is unburnt fuel didn't seem like oil. Pulled #2 plug noticed no wetness and maybe a slighly too hot condition.

My theory.

Dirty back injector causing bad spray/rich condition in back cylinder. Oxygen sensor senses rich conditions and compensates by leaning out mixtues cause hot combustion and high NOX reading.

Any opinions?






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.