NJ Emissions Fail. Results included. Any help appreciated - Jeep Wrangler Forum
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > YJ Jeep Wrangler Forum > YJ Tech Forum

Join Wrangler Forum Today


Reply
 
Thread Tools

Please support our sponsors and let them know you heard about them on WranglerForum.com
Old 07-11-2012, 08:47 PM   #1
Jeeper
 
BadMojo11's Avatar
 
Join Date: Jun 2012
Location: Lawrenceville, NJ
Posts: 237
Images: 4
NJ Emissions Fail. Results included. Any help appreciated

So I failed emissions today. Would love some help. Here is the result of the test:

1992 YJ. 2.5L. Brand new (1 wk old) magnaflow exhaust.

Primary Test (IDLE - about 800-900RPM):
___Reading __Standard
HC - 382 - 220 (FAIL)
CO - 5.18 - 1.20 (FAIL)

CO2 - 12.3 (pass) (no standard given)
O2 - 1.2 (pass) (same)

HIGH IDLE (I watched him keep it at only about 1700rpm.. I bet there is some consistency issues at the NJ inspection. I thought they needed it at 2500rpm)
___Reading__ Standard
HC - 140 - 220 (pass)
CO - 3.38 - 1.20 (FAIL)
CO2 - 11.8 (pass)
O2 - 0.9 (pass)

Thanks for any help ahead of time! I'll keep everyone updated on the progress throughout all of this to help future emissions rejects

__________________
92 YJ. 2.5 (temporarily) 5spd. 5" lift. 35"x14.5" Super Swamper Thornbirds.
BadMojo11 is offline   Quote Quick Reply
Old 07-11-2012, 09:52 PM   #2
Jeeper
 
Timberwolf's Avatar
 
Join Date: Sep 2010
Posts: 863
have you ever had it tested before or was this the first time?

when was the last full tune-up?

Timberwolf is offline   Quote Quick Reply
Old 07-11-2012, 10:15 PM   #3
Jeeper
 
Join Date: Aug 2011
Location: north of St.Franisville La.
Posts: 2,071
Send a message via Yahoo to Nubby55
i don't think the muffler would those numbers.
Nubby55 is offline   Quote Quick Reply
Old 07-11-2012, 10:30 PM   #4
2xs
Cali Smog Nazi.

WF Supporting Member
 
2xs's Avatar
 
Join Date: Jun 2011
Location: Santa Rosa, Ca.
Posts: 2,639
Images: 3
Your problem is CO, Partially burnt fuel, your Jeep is running WAY to RICH! A tune up will NOT change your tailpipe numbers, do not listen to anyone suggesting this, a tune up WILL fix HC issues (if there is a faulty ignition part). Your slight HC issue is a result of the excessive CO.

CO can be the result of:
leaking fuel injector(s)
Stuck open Canister purge solenoid
faulty Fuel pressure regulator
Cat Converter not working (I say this because the low CO2, should be 14.7%)
plugged PCV
Low compression

CO like yours can be caused by anything that causes a severe rich mixture, a severe failure to complete the combustion process can cause high CO as there is not enough air to burn all the fuel.

In Cali we have a small window between 2250 and 2750 for the high idle test, if he is able to hold it and be able to test it at 1700, that might be what your state specifies.
__________________
'93 Black YJ, 4.0L AX15 - UNDER CONSTRUCTION!
http://www.wranglerforum.com/f330/2x...ad-490865.html
'04 SV1000s:
http://www.svrider.com/forum/showthread.php?t=280873
Old Jeep that was totaled (and SOLD!):
http://www.wranglerforum.com/f330/2x...ad-101879.html
2xs is offline   Quote Quick Reply
Old 07-11-2012, 10:31 PM   #5
Jeeper
 
BadMojo11's Avatar
 
Join Date: Jun 2012
Location: Lawrenceville, NJ
Posts: 237
Images: 4
Quote:
Originally Posted by Timberwolf View Post
have you ever had it tested before or was this the first time?

when was the last full tune-up?
First time I've had it inspected since I have owned it. And I'm not sure when I've done a lot to it since I've had it but never a full tune up.

Quote:
Originally Posted by Nubby55 View Post
i don't think the muffler would those numbers.
I didn't think that it had any effect I was just including that the muffler is new as information being that it's part of the exhaust system.
__________________
92 YJ. 2.5 (temporarily) 5spd. 5" lift. 35"x14.5" Super Swamper Thornbirds.
BadMojo11 is offline   Quote Quick Reply
Old 07-11-2012, 10:39 PM   #6
Jeeper
 
BadMojo11's Avatar
 
Join Date: Jun 2012
Location: Lawrenceville, NJ
Posts: 237
Images: 4
Quote:
Originally Posted by 2xs View Post
Your problem is CO, Partially burnt fuel, your Jeep is running WAY to RICH! A tune up will NOT change your tailpipe numbers, do not listen to anyone suggesting this, a tune up WILL fix HC issues (if there is a faulty ignition part). Your slight HC issue is a result of the excessive CO.

CO can be the result of:
leaking fuel injector(s)
Stuck open Canister purge solenoid
faulty Fuel pressure regulator
Cat Converter not working (I say this because the low CO2, should be 14.7%)
plugged PCV
Low compression

CO like yours can be caused by anything that causes a severe rich mixture, a severe failure to complete the combustion process can cause high CO as there is not enough air to burn all the fuel.

In Cali we have a small window between 2250 and 2750 for the high idle test, if he is able to hold it and be able to test it at 1700, that might be what your state specifies.
Thanks. I was hoping you would see this post 2xs. I've read all your comments on other emissions threads and I knew you know your stuff. So I will check all the components/possible issues you mentioned and let you know what happens. Would cleaning the throttle body help a little? Or seafoam? I was gonna try that but my numbers seemed really high and based on your other responses to threads I figured I was way rich and those two things wouldn't really help me much.
__________________
92 YJ. 2.5 (temporarily) 5spd. 5" lift. 35"x14.5" Super Swamper Thornbirds.
BadMojo11 is offline   Quote Quick Reply
Old 07-11-2012, 10:47 PM   #7
2xs
Cali Smog Nazi.

WF Supporting Member
 
2xs's Avatar
 
Join Date: Jun 2011
Location: Santa Rosa, Ca.
Posts: 2,639
Images: 3
Quote:
Originally Posted by BadMojo11 View Post
Thanks. I was hoping you would see this post 2xs. I've read all your comments on other emissions threads and I knew you know your stuff. So I will check all the components/possible issues you mentioned and let you know what happens. Would cleaning the throttle body help a little? Or seafoam? I was gonna try that but my numbers seemed really high and based on your other responses to threads I figured I was way rich and those two things wouldn't really help me much.
Seafam will lower NOx readings, knocking carbon off the vales and pistons, lowering compression back to stock levels. Cleaning the throttle body wont do much, maybe increase throttle responce...
__________________
'93 Black YJ, 4.0L AX15 - UNDER CONSTRUCTION!
http://www.wranglerforum.com/f330/2x...ad-490865.html
'04 SV1000s:
http://www.svrider.com/forum/showthread.php?t=280873
Old Jeep that was totaled (and SOLD!):
http://www.wranglerforum.com/f330/2x...ad-101879.html
2xs is offline   Quote Quick Reply
Old 07-13-2012, 07:01 PM   #8
Jeeper
 
Join Date: Mar 2012
Posts: 47
i,m in n,j same thing need new cat and o2 pass now about 750 for all of it got love it lol

pupa1 is offline   Quote Quick Reply
Reply

Tags
emissions , fail , inspection , new jersey , smog

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Jeep Wrangler Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools

Posting Rules
You may post new threads
You may 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 Off
Pingbacks are Off
Refbacks are Off




» Featured Product

All times are GMT -5. The time now is 11:39 PM.



Jeep®, Wrangler, Liberty, Wagoneer, Cherokee, and Grand Cherokee are copyrighted and trademarked to Chrysler Motors LLC.
Wranglerforum.com is not in any way associated with the Chrysler Motors LLC