Search



Go Back   MustangForums.com > Ford Mustang Tech > 2005 - 2014 Mustangs
Sign in using an external account
Register Forgot Password?
Search

2005 - 2014 Mustangs Discussions on the latest S197 model Mustangs from Ford.
Sponsored by Latemodel Restoration


Welcome to Mustang Forums!
Welcome to Mustang Forums.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, at no cost, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!


Reply
 
 
 
 
Thread Tools Search this Thread
Old 01-17-2008, 07:38 PM   #1
Dex
5th Gear Member
 
Dex's Avatar
 
Join Date: Mar 2007
Location:
Posts: 2,257
Default Plugs keep fouling out. Think I found out the solution

I change my plugs and the car starts a few times but runs lean. I come back a few days later and now the car wont start again and the plugs look the same as the last ones. Im wondering if they can go bad that quickly from being too lean? This is the best picture I could get. It almost looks like oil on it too...but there are new pistons and rings so how could that happen?


[IMG]local://upfiles/64043/83F27A8A7288448790ED4EFA54B43580.jpg[/IMG]
This ad is not displayed to registered or logged-in members.
Register your free account today and become a member on Mustang Forums!
Dex is offline   Reply With Quote
Old 01-17-2008, 07:56 PM   #2
hammeron
6th Gear Member
 
hammeron's Avatar
 
Join Date: May 2006
Vehicle: 2006 GT
Location: Nicely done
Posts: 11,738
Default RE: Plugs keep fouling out. Need some help

dex, do you have a vacuum/boost gauge?

if so, are you seeing normal vacuum readings,
when idling
__________________
2006 GT Supercharged



Whipple 12psi, Aluminator 8.7:1, Hot Rod cams.
hammeron is offline   Reply With Quote
Old 01-17-2008, 08:40 PM   #3
marcuskeeler
5th Gear Member
 
marcuskeeler's Avatar
 
Join Date: Sep 2006
Posts: 3,401
Default RE: Plugs keep fouling out. Need some help

It's not uncommon for a new build motor to use oil until it's broken in.

That plug looks like it's been too hot. How does it run? Air leak ?
__________________
http://www.mkeeler.com/
marcuskeeler is offline   Reply With Quote
Old 01-18-2008, 01:23 AM   #4
Dex
5th Gear Member
 
Dex's Avatar
 
Join Date: Mar 2007
Location:
Posts: 2,257
Default RE: Plugs keep fouling out. Need some help

It wont idle because the tune was too lean. It sat at 16 onthe AFR and when i reved it to keep the car alive it went down to 15's. I got a new base tune that would be fine now but now i have to get a new set of plugs. I hope that it was just too lean and hot and burned them up. Because if thats not the case then there is something else wrong in the electrical part of the car

Im going to load the tune and new plugs tomorrow. Im hoping that is all this problem was. It just seemed odd that it could foul these plugs up so quickly.

WHy are our plugs 10 bucks each! jebus
Dex is offline   Reply With Quote
Old 01-18-2008, 01:47 AM   #5
Simon1
5th Gear Member

 
Join Date: Dec 2006
Vehicle: 2006 Mustang GT
Location: Redding, CA
Posts: 4,220
Default RE: Plugs keep fouling out. Need some help

Please keep us posted with the solution.

I doubt you have an electrical issue as it sounds more like a tune issue.
__________________
[IMG][/IMG]

Motor Built by ST Motorsports
Tuned By Tony at Tuners Inc

11.05@129
Simon1 is offline   Reply With Quote
Old 01-18-2008, 05:23 AM   #6
mygt500
Multi-Tasking Moderator!
 
mygt500's Avatar
 
Join Date: Nov 2006
Vehicle: 2006 Ford Mustang GT
Location: Detroit Rock City!
Posts: 15,613
Default RE: Plugs keep fouling out. Need some help

Esp if you are running lean the tune needs adj.... J
__________________

2006 Mustang GT with Cervinis Kit
Whipple Crew member
H.O. S/C 465 RWHP and 440RWTQ



link to Michigan regional chapter

http://www.cardomain.com/ride/3342086

www.mocsem.com
mygt500 is offline   Reply With Quote
Old 01-18-2008, 07:10 AM   #7
redfireshaker06
4th Gear Member
 
Join Date: Nov 2005
Vehicle: 2006 Ford Mustang GT
Location: FLORIDA
Posts: 1,536
Default RE: Plugs keep fouling out. Need some help

Quote:
ORIGINAL: Dex

It wont idle because the tune was too lean. It sat at 16 onthe AFR and when i reved it to keep the car alive it went down to 15's. I got a new base tune that would be fine now but now i have to get a new set of plugs. I hope that it was just too lean and hot and burned them up. Because if thats not the case then there is something else wrong in the electrical part of the car

Im going to load the tune and new plugs tomorrow. Im hoping that is all this problem was. It just seemed odd that it could foul these plugs up so quickly.

WHy are our plugs 10 bucks each! jebus
Your not running a emailcanned tune for a power adder are you?????
__________________
Brandon
2006 Ford Mustang Redfire GT 5-Speed




redfireshaker06 is offline   Reply With Quote
Old 01-18-2008, 08:58 AM   #8
MustangGT0405
5th Gear Member
 
MustangGT0405's Avatar
 
Join Date: Jun 2007
Vehicle: 2007, Ford, Mustang GT
Location: Orlando, FL
Posts: 2,276
Default RE: Plugs keep fouling out. Need some help

Not a very good pic for sure but it defineatley looks like it was real lean.

Also to me "fouled" plugs are when you get too much oil in them and they can no longer produce a spark. A fouled plug you can clean and then it will work again. Yours are toast.

I hope you get it figured out and it is nothing major.
__________________
Whipple Crew Member

484rwhp 469rwtq
MustangGT0405 is offline   Reply With Quote
Old 01-18-2008, 10:28 AM   #9
modaddict
4th Gear Member
 
modaddict's Avatar
 
Join Date: Nov 2007
Location:
Posts: 1,699
Default RE: Plugs keep fouling out. Need some help

Running lean is asbout as bad as you can do to ruin your motor. Especially with the 2 piece plugs these cars use. That thing gets too hot, breaks the tip off and a whole lot of ugly possibilities pop up. (tapping a piston for one)

If you don't get a new tune, changing plugs is going to be the least of your worries.

BTW: When one of these plugs is fouled, it's not okay to just 'clean them off' - when they are fouled - they need to be trashed.

Back to Dex - are you sure you have enough fuel and spark for your set-up and power level?
__________________
05 Sonic Blue Roush GT

JPC/RGR/RET Built monster 8 sec 3V
modaddict is offline   Reply With Quote
Old 01-18-2008, 10:32 AM   #10
157dB
Cut & Paste Expert
 
157dB's Avatar
 
Join Date: May 2007
Vehicle: 2007 Pony Package
Location: NW Arkansas
Posts: 13,294
Default RE: Plugs keep fouling out. Need some help

Too lean.
You seem to need an A/F meter set-up.
__________________
NON PUMKIN JACKER
http://www.mustangforums.com/forum/5...-this-car.html
Quote:
Originally Posted by chronos View Post
You and that darn manual! If you like it so much, maybe you should marry it!
157dB is offline   Reply With Quote
Old 01-18-2008, 10:32 AM
MustangForums
Ford Mustang




Paid Advertisement

 
 
 
Reply

Tags
05, 2007, 50, 89, faueling, ford, fouling, fuel, gt, mustaing, mustang, plugs, roush, spark, sparks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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 Off
Pingbacks are Off
Refbacks are Off

Forum Jump

Advertising

Featured Sponsors
Vendor Directory
New Sponsors
All times are GMT -5. The time now is 06:54 PM.

© Internet Brands, Inc.


This forum is owned and operated by Internet Brands, Inc., a Delaware corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford Motor Company or its related companies in any way. Ford® is a registered trademark of the Ford Motor Company
Emails Backup