03 xterra running rough p0300 & p0328 - Nissan Xterra Forum
 
Thread Tools Display Modes
#1 Old 12-04-2012, 02:58 PM
Cookiemanpf
Member
 
Join Date: Mar 2010
Posts: 14
2003 Xterra
Cookiemanpf is on a distinguished road
03 xterra running rough p0300 & p0328

Hey guys I'm having a problem with my 03 xterra , it has the v6 3.3,
It continues to run really rough and almost stall when motors warm .. So far I've replaced the plugs , wires , distributor, knock sensor , yet still have the problem .. I'm also noticing some black soot under the truck coming from the exhaust .. The codes were p0300 & p0328 . Which is misfire and knock sensor .. I did notice when I replaced the plugs that the #6 plug in the back was black colored , the rest of the plugs were caramel colored , like they should be ..

I'm thinking maybe a coil is bad ? Are there 6 separate coils for each cylinder ?
Cookiemanpf is offline  
2003 Xterra
Sponsored Links
Advertisement
 
#2 Old 12-05-2012, 06:43 AM
Cookiemanpf
Member
 
Join Date: Mar 2010
Posts: 14
2003 Xterra
Cookiemanpf is on a distinguished road
Smile Help

Maybe a faulty fuel injector ? How do I test the fuel injectors ? Cause I did get a code last week from auto zone that said misfire on # 6 cylinder , and that was the plug that was black , the rest of the plugs were normal , I replaced that #6 plug , it ran better for a few hours , then threw the p0300 & p0328 code again ..

Got me stumped .. C'mon guys , whatcha think ?
Cookiemanpf is offline  
2003 Xterra
#3 Old 12-05-2012, 10:01 AM
SamsXE
Veteran
 
SamsXE's Avatar
 
Join Date: Apr 2012
Location: Columbus, Ohio
Posts: 301
2004 Xterra
SamsXE is on a distinguished road
Yeah sounds like the injector. I would pull it and see what kind of buildup you have. If it were a distributor more than likely there would be issues on other cylinders. And 1 cylinder firing out of order due to a "stuck" injector can cause stalling. They are relatively cheap.

Do you have any exhaust leaks?
SamsXE is offline  
2004 Xterra
#4 Old 12-05-2012, 11:41 AM
Cookiemanpf
Member
 
Join Date: Mar 2010
Posts: 14
2003 Xterra
Cookiemanpf is on a distinguished road
Thanks

No exhaust leaks , I just sea foamed the motor and put some in fuel tank , hope that might help the injector .. But what I'm wondering is , if that #6 spark plug was black , wouldn't that mean there's a rich condition ? Like it's getting too much fuel ?
Cookiemanpf is offline  
2003 Xterra
#5 Old 12-05-2012, 12:12 PM
SamsXE
Veteran
 
SamsXE's Avatar
 
Join Date: Apr 2012
Location: Columbus, Ohio
Posts: 301
2004 Xterra
SamsXE is on a distinguished road
Quote:
Originally Posted by Cookiemanpf View Post
No exhaust leaks , I just sea foamed the motor and put some in fuel tank , hope that might help the injector .. But what I'm wondering is , if that #6 spark plug was black , wouldn't that mean there's a rich condition ? Like it's getting too much fuel ?
Think of the injector as a valve. If it is all gummed up or has debris in it, it may create a condition where the injector is sticking open longer than usual. Seafoam might help but if you want...try taking the injector out and spraying the end with carb cleaner. Should remove varnish...im not sure that will cure the issue but its worth a shot.

Thats what I would do anyway...
SamsXE is offline  
2004 Xterra
Reply

Quick Reply
Message:
Options

Register Now

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


Forum Jump

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