P1440 EVAP System Small Leak - Nissan Forum
 
LinkBack Thread Tools Display Modes
#1 Old Jun 24th, 2008, 10:50 AM
NissanForums Newbie
 
Join Date: Jun 2008
Posts: 2
Unhappy P1440 EVAP System Small Leak

All-
(98 Altima)
I read what people experienced when this MIL popped up.
Tried the following:
1) Replace gas cap, nothing
2) Checked two solenoid valves near charcoal canister, they're perfect
3) Inspected all hoses that I have visible access to related to EVAP sys,
nothing wrong or rotted or broken.
Does anyone know what else to look for ?
How pressure sensitive is this system? How small does the leak have to
be for the PCM to get pissed and throw the 1440 code?
If anyone has more information, please share it with me.

Maybe someone diagnosed the leak with smoke and can share where
they found it, it may be a common point of weakness/failure on these vehicles.


Thanks a lot for reading !! Thanks even more for posting a reply!
Sponsored Links
Advertisement
 
#2 Old Jun 24th, 2008, 09:28 PM
Nissan Technician
 
metro273's Avatar
 
Join Date: Sep 2005
Location: Western Burbs of Chicago
Posts: 826
You need to remove the evap canister, with the vent control valve still attached and look closely where the 10mm bolts hold the valve to the canister. You'll most likely see a few small hairline cracks, near the bolts, either on the valve itself or the canister.
This is a common issue when this code appears...good luck!
Reply

  Nissan Forum > Altima/Stanza > L30 1998-2001 Altima

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Nissan 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.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



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 On
Pingbacks are On
Refbacks are On