Need spark plugs - Ford Focus Forum, Ford Focus ST Forum, Ford Focus RS Forum
Ford Focus Forum
HomeContact UsAbout UsGalleryDiscussion ForumsMarketplace


Go Back   Ford Focus Forum, Ford Focus ST Forum, Ford Focus RS Forum > Ford Focus Tech Discussions > General Technical Chat

General Technical Chat This section is for technical discussions relating to general maintenance, electrical issues, engine trouble, and recalls.

Search This Forum | Image Search | Advanced Search    
FocusFest FocusFanatics Merchandise

Reply
 
LinkBack Thread Tools Display Modes
Old 03-19-2015, 01:33 PM   #1
Focus Enthusiast
 
Raypro's Avatar
 
Join Date: Nov 2007
Fan#: 51474
Location: Canada
What I Drive: 2005 Ford Focus ZX4 ST

Posts: 119
Points 1,105, Level 18
Points: 1,105, Level: 18 Points: 1,105, Level: 18 Points: 1,105, Level: 18
Level Up 5% Completed
Level up: 5% Level up: 5% Level up: 5%
Forum Activity 1%
Activity: 1% Activity: 1% Activity: 1%
FF Reputation: 2 Raypro Good Standing Member
Buy-Sell-Trade Rating: (0)
Need spark plugs

I'm looking for some spark plugs for my 2005 Focus ST 2.3L duratec. I'm looking for ones that will give me the best mileage as I'm getting terrible mileage now. I but in Bosch ones about 60-80k km's ago. I would like to have a nice clean idle and maybe gain a bit of performance as well but gas mileage is of upmost importance. I've been reading on the forums of people using the autolite 104 and adjusting gap but I don't care to play with gaps or change them out every 10k either. I hear the autolite 103 plat's are excellent? how about the irudims?


Thanks for your help.


Raypro is offline  
    Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 03-19-2015, 02:05 PM   #2
Hammer Down
 
sailor's Avatar
 
Join Date: Jun 2008
Fan#: 57268
Location: Williamsville, NY
What I Drive: 2004 Pitch Black ZTS 2.3 5spd.

Posts: 20,349
Points 14,447, Level 77
Points: 14,447, Level: 77 Points: 14,447, Level: 77 Points: 14,447, Level: 77
Level Up 99% Completed
Level up: 99% Level up: 99% Level up: 99%
Forum Activity 100%
Activity: 100% Activity: 100% Activity: 100%
FF Reputation: 82 sailor Excellent Standing Member
Buy-Sell-Trade Rating: (0)
If you don't want to change plugs use the stock ones from Ford.

double checking gap before installation is always important IMHO, the AR104's you mentioned don't come out of the box at the right gap but stock ones SHOULD be close.

The AR104's could last 30k, but the advantages go away after about the 10k mentioned. Plats aren't quite as good ever, but last longer. Don't leave them in forever without touching them either, might take the threads right out with them at 100k.

This thread you probably read answers all the questions:The Duratec Sparkplug Sticky

Bosch are well known for often giving poor results in our engines.
__________________
"Rubber Side Down"

S.R. #275
Focus Takeover #003 / Tarbo Fan #003
sailor is online now  
    Reply With Quote Quick reply to this message
Old 03-19-2015, 02:20 PM   #3
Focus Enthusiast
 
Raypro's Avatar
 
Join Date: Nov 2007
Fan#: 51474
Location: Canada
What I Drive: 2005 Ford Focus ZX4 ST

Posts: 119
Points 1,105, Level 18
Points: 1,105, Level: 18 Points: 1,105, Level: 18 Points: 1,105, Level: 18
Level Up 5% Completed
Level up: 5% Level up: 5% Level up: 5%
Forum Activity 1%
Activity: 1% Activity: 1% Activity: 1%
FF Reputation: 2 Raypro Good Standing Member
Buy-Sell-Trade Rating: (0)
Great read, thanks. Sounds like OEM would be my best bet in my situation that. I'll be happy to get my stock mileage back as I'm getting an extremely terrible 24-25mpg as measured on my last long trip on the hwy.
Raypro is offline  
    Reply With Quote Quick reply to this message
Old 03-19-2015, 02:26 PM   #4
Hammer Down
 
sailor's Avatar
 
Join Date: Jun 2008
Fan#: 57268
Location: Williamsville, NY
What I Drive: 2004 Pitch Black ZTS 2.3 5spd.

Posts: 20,349
Points 14,447, Level 77
Points: 14,447, Level: 77 Points: 14,447, Level: 77 Points: 14,447, Level: 77
Level Up 99% Completed
Level up: 99% Level up: 99% Level up: 99%
Forum Activity 100%
Activity: 100% Activity: 100% Activity: 100%
FF Reputation: 82 sailor Excellent Standing Member
Buy-Sell-Trade Rating: (0)
Plugs SHOULDN'T make a large difference, but enough have complained about poor performance with Bosch in the Focus it's worth changing those.

Look your plug boots over when you do, they're actually replaceable cheaply if not in good condition.
__________________
"Rubber Side Down"

S.R. #275
Focus Takeover #003 / Tarbo Fan #003
sailor is online now  
    Reply With Quote Quick reply to this message
Old 03-19-2015, 07:09 PM   #5
Focus Enthusiast
 
Raypro's Avatar
 
Join Date: Nov 2007
Fan#: 51474
Location: Canada
What I Drive: 2005 Ford Focus ZX4 ST

Posts: 119
Points 1,105, Level 18
Points: 1,105, Level: 18 Points: 1,105, Level: 18 Points: 1,105, Level: 18
Level Up 5% Completed
Level up: 5% Level up: 5% Level up: 5%
Forum Activity 1%
Activity: 1% Activity: 1% Activity: 1%
FF Reputation: 2 Raypro Good Standing Member
Buy-Sell-Trade Rating: (0)
So dealer wants $18 each for oem plugs. I called a parts place about autolite and $3 for the copper and $6 for plats. What is the best alternative to the oem while retaining good fuel mileage? Is gapping to 0.55 that necessary?
Raypro is offline  
    Reply With Quote Quick reply to this message
Old 03-19-2015, 07:39 PM   #6
Focus Fanatic
 
Join Date: Mar 2012
Fan#: 96610
Location: Fort Worth, TX
What I Drive: 00 wagon, 02 sedan both zetec atx

Posts: 6,237
Points 3,594, Level 37
Points: 3,594, Level: 37 Points: 3,594, Level: 37 Points: 3,594, Level: 37
Level Up 63% Completed
Level up: 63% Level up: 63% Level up: 63%
Forum Activity 78%
Activity: 78% Activity: 78% Activity: 78%
FF Reputation: 31 amc49 Great Standing Member
Buy-Sell-Trade Rating: (0)
It most certainly is if you are as concerned as you claim...............you want the best outcome yet you want to fudge on required work to get that and only one minute worth of work there....................krikey.

Gap the damn plugs and move on. It needs checking anyway since plug boxes get dropped all the time and the gap won't be right then for sure. Also because plug is gapped for the most common applications, if your car not in that list then the wrong gap. You ALWAYS check the gap or suffer the consequences.

FYI , iridiums hold the gap longer than plats and why they were invented. The tips don't erode as fast in use.

The exact same Motorcraft plugs the dealer gives you are available much cheaper at the parts store.
amc49 is online now  
    Reply With Quote Quick reply to this message
Old 03-19-2015, 07:47 PM   #7
Hammer Down
 
sailor's Avatar
 
Join Date: Jun 2008
Fan#: 57268
Location: Williamsville, NY
What I Drive: 2004 Pitch Black ZTS 2.3 5spd.

Posts: 20,349
Points 14,447, Level 77
Points: 14,447, Level: 77 Points: 14,447, Level: 77 Points: 14,447, Level: 77
Level Up 99% Completed
Level up: 99% Level up: 99% Level up: 99%
Forum Activity 100%
Activity: 100% Activity: 100% Activity: 100%
FF Reputation: 82 sailor Excellent Standing Member
Buy-Sell-Trade Rating: (0)
good prices on the Autolites, have heard of higher in Canada & that's lower than over the counter can be here.

.050-.055 is good, and the coppers are the only ones I know PROVEN to be better when fresh. Some tried .060 but it doesn't work for all. Can't vouch for any others myself.
__________________
"Rubber Side Down"

S.R. #275
Focus Takeover #003 / Tarbo Fan #003
sailor is online now  
    Reply With Quote Quick reply to this message
Old 03-19-2015, 08:11 PM   #8
Focus Fanatic
 
Join Date: Mar 2012
Fan#: 96610
Location: Fort Worth, TX
What I Drive: 00 wagon, 02 sedan both zetec atx

Posts: 6,237
Points 3,594, Level 37
Points: 3,594, Level: 37 Points: 3,594, Level: 37 Points: 3,594, Level: 37
Level Up 63% Completed
Level up: 63% Level up: 63% Level up: 63%
Forum Activity 78%
Activity: 78% Activity: 78% Activity: 78%
FF Reputation: 31 amc49 Great Standing Member
Buy-Sell-Trade Rating: (0)
I close to like .045-.050 to let the gap move through the optimum space as the tuneup ages......
__________________
Fix the driver first, then fixing the car becomes so much easier.
amc49 is online now  
    Reply With Quote Quick reply to this message
Reply

Bookmarks & Social Networks

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Ford Focus Forum, Ford Focus ST Forum, Ford Focus RS 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:
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
Display Modes

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



All times are GMT -5. The time now is 12:14 AM.


Copyright 2002-2015 FocusFanatics.com. All Rights Reserved : Privacy Policy : Advertise Information

Focus Fanatics Ford Focus Forum offers many fun ways for you to engage with other Ford Focus Owners from across the world. Whether it be about the aftermarket performance modifications, technical how-to's, European tuned suspension or awesome fuel economy similar to the Mazda CX-3, Audi S3, Mazda MX-5 Miata and Acura TLX. You can find all Ford Focus, Focus ST and Focus RS related information here. Join our Ford Focus discussion forums and chat with local Focus enthusiasts in your area. If you own other makes have a look at Challenger Hellcat Forum, Charger Hellcat Forum, Cadillac ATS-V Forum, Cadillac ATS Forum, Cadillac CTS-V Forum, Lexus RC-F Forum, Lexus GS-F Forum, Mercedes GLA Forum, Mercedes GLE Forum, Civic Type-R Forum and Volvo XC90 Forum.





Search Engine Optimization by vBSEO 3.6.1