Emissions suggestions.... - Off-Road Forums & Discussion Groups
Suzuki GEO All Discussion of all things, Suzuki and GEO

LinkBack Thread Tools Display Modes
post #1 of (permalink) Old 02-19-2007, 11:04 AM Thread Starter
Join Date: Feb 2003
Posts: 17
Thanks: 0
Thanked 0 Times in 0 Posts
Emissions suggestions....

SO here we go.... '86 Sammy, engine is stock except for chevy alt., vent tube and custom snorkle with all vent lines plumbed into it. 2" exhaust with a fairly fresh cat. (4 years old). Went to get emissions done yesterday, and I failed. I don't just mean failed a little, it bombed. I'm usually pretty smug when the operator exclaims "that thing will never pass!" as it always has in the past, by a large margin. Not this time. High CO on the low speed test. Mechanic says "looks like a bad O2 sensor to me". Sooo, off to the store for an O2 sensor and another set of plugs (since I hadn't changed them in years). Gap on old plugs was almost .065!!!!! Gapped new plugs at .031 and put in new O2 sensor. Retest this morning. Worse results this time around!!! CO on the high speed test climbed from a passing 02.87 to a failing 06.21, low speed decreased from a failing 06.23 to a stil failing 05.46. What the heck?? Mechanic sez.. "Looks like she's running rich to me". Really? Ya think so?
So, I'm looking for advice. My current course of action is this: Check all vaccuum hoses for leaks, check the EGR valve, check the timing, inspect the carb. for any obvious problems (seems like I remember you can't manually adjust the mixture, right?), and beyond that... I dunno....
thespecialistkc is offline  
Sponsored Links
post #2 of (permalink) Old 02-19-2007, 08:25 PM
Can't Get Enough
Join Date: Jul 2002
Location: San Diego, CA
Posts: 1,002
Thanks: 0
Thanked 0 Times in 0 Posts
Re: Emissions suggestions....

Could it be that the snorkle is causing her to run rich??

Just a thot
billybob is offline  
post #3 of (permalink) Old 02-27-2007, 10:25 AM
Keyboard Implanted
Join Date: Apr 2000
Location: western MA. USA
Posts: 3,064
Thanks: 0
Thanked 0 Times in 0 Posts
No adjusting the stock carb, disconnect the snorkle, if it is is under 2" id,
set the timing to 12Deg btdc (retarding it lowers the readings)
Fix the EGR. if it is a 1.3 the passege is clogged from the exhuast manafold to the other side of the hear. an old speedo cable in a drill chuck can clean it.
wildweasel is offline  
Sponsored Links

Quick Reply

Register Now

In order to be able to post messages on the Off-Road Forums & Discussion Groups forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:


Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode

Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome