Lean/Rich?? - Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars
Ford Forum Ford Forum

» Auto Insurance
» Featured Product
ยป Wheel & Tire Center

Go Back   Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars > The Garage - Tech Forums > Engine Specific Tech > Inline 6 Tech
Register Home Forum Active Topics Photo Gallery Auto Loans Garage Mark Forums Read Auto Escrow

FordForums.com is the premier Ford Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools Display Modes
Old 02-02-2004, 00:00   #1 (permalink)
Registered User
 
madmelon's Avatar
 
Join Date: Apr 2003
Location: Shire :D
Age: 29
Posts: 439
Question Lean/Rich??

Falcons are said to run very rich. My mum owns an EL falcon 6cyl and lastnight i pulled all the plugs. By the colour of the tips, it looked like it was running lean if anything, however further down the plug where the little terminal joins the outer edge of the plug its black as. What does this mean? is it running rich? is it running lean? i dunno...
also...places like powerchip claim almost a 20kw increase by installing their chp with modifies spark timing and mixture (i believe they make it the exact correct ratio so not lean or rich). If this results in leaning out the mixture, wont this dramatically increase the running temperature of the engine? THey already get pretty hot if you push them hard , so how hot will they get if its running even leaner? Methinks a slight cooling upgrade would be in order for anyone considering this modification...
If anyone can enlighten me further about these mods i'd be very appreciative.
Thanks
DM
madmelon is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 02-02-2004, 06:09   #2 (permalink)
grippin'n'rippin
 
sleepwalker's Avatar
 
Join Date: Oct 2002
Location: Adelaide SA
Posts: 250
Re: Lean/Rich??

have a look here and try to match yours.
there are number of factors to consider aside the air/fuel ratio, such as operating temp, timing, bad spark, etc.
are they all the same, or do they vary at different cylinders?
sleepwalker is offline   Reply With Quote
Old 02-02-2004, 06:09   #3 (permalink)
grippin'n'rippin
 
sleepwalker's Avatar
 
Join Date: Oct 2002
Location: Adelaide SA
Posts: 250
Re: Lean/Rich??

forgot the link :o)

http://www.motocross.com/motoprof/mo...lug2/plug2.htm
sleepwalker is offline   Reply With Quote
Old 02-02-2004, 17:14   #4 (permalink)
Registered User
 
madmelon's Avatar
 
Join Date: Apr 2003
Location: Shire :D
Age: 29
Posts: 439
Re: Lean/Rich??

all the plugs were pretty much the same and they look just like the "running rich" plug in the picture. What made me think it was lean was the very light colour you can see on the top electrode. From now on i'll be looking at the porcelain...
This doesn't change the fact that making it run leaner will cause it to run even hotter, especially if (when...) pushed.

Last edited by madmelon; 02-02-2004 at 17:28.
madmelon is offline   Reply With Quote
Old 02-03-2004, 00:10   #5 (permalink)
Registered User
 
Join Date: Jul 2003
Location: Gold Coast
Posts: 529
Re: Lean/Rich??

You can't use those guides because unleaded has too many additives. The best you could possibly do is do a plug chop at the strip on a new set of plugs. Even then it won't be exact. You can only properly read plugs with racing leaded fuel, the lead produces a nice colour when the AFRs are perfect.

I think you'll find one contributor to the car running hot is the auto tranny, these ones produce a lot of heat.
not ford is offline   Reply With Quote
Old 02-03-2004, 20:37   #6 (permalink)
grippin'n'rippin
 
sleepwalker's Avatar
 
Join Date: Oct 2002
Location: Adelaide SA
Posts: 250
Re: Lean/Rich??

what car do you have?
sleepwalker is offline   Reply With Quote
Old 02-04-2004, 00:22   #7 (permalink)
Registered User
 
Join Date: Jul 2003
Location: Gold Coast
Posts: 529
Re: Lean/Rich??

I have an NC fairlane.

An example of fuel additives is when LPR came out, plugs all went orange on the porcelian. If you didn't know better you might have thought you had blown a head gasket.
not ford is offline   Reply With Quote
Old 02-04-2004, 18:07   #8 (permalink)
grippin'n'rippin
 
sleepwalker's Avatar
 
Join Date: Oct 2002
Location: Adelaide SA
Posts: 250
Re: Lean/Rich??

these new fuels are doing some messed up shit to engines. i wonder what they put in it
sleepwalker is offline   Reply With Quote
Sponsored Links
Advertisement
 
Reply

  Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars > The Garage - Tech Forums > Engine Specific Tech > Inline 6 Tech



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

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


Powered by vBadvanced CMPS v3.2.2

All times are GMT -7. The time now is 22:45.



Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Content Relevant URLs by vBSEO 3.6.0
Garage Plus vBulletin Plugins by Drive Thru Online, Inc.