duratec trouble - Focus Fanatics
Ford Focus Forum
HomeContact UsAbout UsGalleryDiscussion ForumsMarketplace


Go Back   Focus Fanatics > 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    
Ford Focus Tire & Wheels FocusFanatics Merchandise

Reply
 
Thread Tools Display Modes
Old 08-23-2008, 01:50 PM   #1
951_Zx3
Focus Jr. Enthusiast
 
951_Zx3's Avatar
 
Join Date: Mar 2008
Fan#: 54020
Location: SoCal, Hemet
What I Drive: 2003 Sangria Red ZX3

Posts: 28
FF Reputation: 1 951_Zx3 Good Standing Member
Buy-Sell-Trade Rating: (0)
duratec trouble

All of the sudden started misfiring. I changed the spark plugs to platinum pre-gapped four prong plugs, it helped. But its still not firing properly. I checked all of the cop's and they were all firing. Could the cop's be bad even though they are firing? Should I replace those or save my money, because money is something I dont have alot of right now. I was told that the duratec's dont like platinum plugs, why? I dont know. I was also told that even though the gap spec is .51 , some duratec guys have luck with .6. Should I swap in those plugs instead of the platinums?


951_Zx3 is offline  
    Reply With Quote
Sponsored Links
Advertisement
 
Old 08-26-2008, 12:41 PM   #2
951_Zx3
Focus Jr. Enthusiast
 
951_Zx3's Avatar
 
Join Date: Mar 2008
Fan#: 54020
Location: SoCal, Hemet
What I Drive: 2003 Sangria Red ZX3

Posts: 28
FF Reputation: 1 951_Zx3 Good Standing Member
Buy-Sell-Trade Rating: (0)
Bump
951_Zx3 is offline  
    Reply With Quote
Old 08-26-2008, 06:36 PM   #3
whitefox
Focus Fanatic
 
whitefox's Avatar
 
Join Date: Mar 2008
Fan#: 54401
Location: Strasburg, VA
What I Drive: 2008 Ebony CC 2dr coupe SES 5spd

Posts: 2,088
FF Reputation: 35 whitefox Great Standing Member
Buy-Sell-Trade Rating: (1)
You might also try replacing the coil pack. Plug wires may be bad as well. It almost sounds like it is time for a complete tune up.
__________________
Carl - whitefox -
Team Duratec # 164
Mid-Atlantic Team EXTREME
2008 Focus Ebony Clearcoat 2dr SES 5spd
whitefox is offline  
    Reply With Quote
Old 08-26-2008, 07:00 PM   #4
jetrinka
Focus Fanatic
 
jetrinka's Avatar
 
Join Date: Mar 2007
Fan#: 45622
Location: Snohomish, WA
What I Drive: 88 5-speed XR4TI

Posts: 7,528
FF Reputation: 180 jetrinka Excellent Standing Memberjetrinka Excellent Standing Member
Buy-Sell-Trade Rating: (6)
Duratecs like platinum plugs fine. You won't see any gains with a 4 prong plug over a 1 prong plug though. Electricity will automatically take the path of least resistance.

And to the above poster, the D-tecs don't have plug wires. We have a coil for each plug mounted right on top.

It sounds like one of the coils is indeed going bad. This exact same thing happened to me when I was not careful when washing my engine and some water got inside the spark plug hole and ruined the coil. Started misfiring like crazy. Is the engine throwing any codes by chance to tell you which cylinder it might be?
jetrinka is offline  
    Reply With Quote
Old 08-26-2008, 07:10 PM   #5
focusin
FF Cleaning Squad
 
focusin's Avatar
 
Join Date: Mar 2004
Fan#: 4322
Location: Bay Minette,, AL
What I Drive: All Focus' sold

Posts: 11,959
FF Reputation: 63 focusin Excellent Standing Member
Buy-Sell-Trade Rating: (17)
Duratecs dont have wires or coilpacks, they run a Coil on plug set up.

951 ZX3, its not that duratecs don't like those plugs the bosch plat. 4 are complete garbage. Start off with a good set of either stock plugs from motorcraft or maybe NGK, if you checked the coils and they are sparking you can try looking into your injectors.
__________________
Retired Moderator
GumpCrew #1 (dismantled)
focusin is offline  
    Reply With Quote
Old 08-26-2008, 07:52 PM   #6
toddler 1216
Focus Enthusiast
 
toddler 1216's Avatar
 
Join Date: Oct 2007
Fan#: 50916
Location: Laramie, WY
What I Drive: 2005 Copper ZX3

Posts: 70
FF Reputation: 1 toddler 1216 Good Standing Member
Buy-Sell-Trade Rating: (1)
just out of curiousity why do you say the bosch's are garbage? in all of my experience with volkswagen bosch has been a very respectable company and has delivered great products to me...
__________________
Just because I can doesn't mean I will
toddler 1216 is offline  
    Reply With Quote
Old 08-26-2008, 08:19 PM   #7
focusin
FF Cleaning Squad
 
focusin's Avatar
 
Join Date: Mar 2004
Fan#: 4322
Location: Bay Minette,, AL
What I Drive: All Focus' sold

Posts: 11,959
FF Reputation: 63 focusin Excellent Standing Member
Buy-Sell-Trade Rating: (17)
With my own personal test I had a set of stock motorcraft plugs with 80,000 miles on them. I compared the spark from that with a brand new Bosch Plat 4 plug, the 80,000 mile motorcraft had more spark then all 4 of the new bosch.

Also working at a ford dealer for 2 years I have seen countless people bring their cars in and the plugs were fialing to produce enough spark for proper fire.
__________________
Retired Moderator
GumpCrew #1 (dismantled)
focusin is offline  
    Reply With Quote
Old 08-26-2008, 11:16 PM   #8
951_Zx3
Focus Jr. Enthusiast
 
951_Zx3's Avatar
 
Join Date: Mar 2008
Fan#: 54020
Location: SoCal, Hemet
What I Drive: 2003 Sangria Red ZX3

Posts: 28
FF Reputation: 1 951_Zx3 Good Standing Member
Buy-Sell-Trade Rating: (0)
First of all Thanks to all for the responses.

Quote:
Originally Posted by jetrinka View Post
It sounds like one of the coils is indeed going bad. This exact same thing happened to me when I was not careful when washing my engine and some water got inside the spark plug hole and ruined the coil. Started misfiring like crazy. Is the engine throwing any codes by chance to tell you which cylinder it might be?
The CEL was blinking and then stayed solid after a while. Replaced the spark plugs and disconected the battery to reset the light. Drove it and it was better but still not firing properly, the CEL did not turn back on.

Did your ruined coil still fire the spark plug? All of mine still fire.
951_Zx3 is offline  
    Reply With Quote
Old 08-26-2008, 11:28 PM   #9
jetrinka
Focus Fanatic
 
jetrinka's Avatar
 
Join Date: Mar 2007
Fan#: 45622
Location: Snohomish, WA
What I Drive: 88 5-speed XR4TI

Posts: 7,528
FF Reputation: 180 jetrinka Excellent Standing Memberjetrinka Excellent Standing Member
Buy-Sell-Trade Rating: (6)
Yes it would still fire but would cause a random miss at certain times.

I wish you had read the code. lol. It would have told you which it was and you could go from there. I can almost be certain that regardless of plug type, a coil is going bad.
jetrinka is offline  
    Reply With Quote
Old 08-26-2008, 11:33 PM   #10
951_Zx3
Focus Jr. Enthusiast
 
951_Zx3's Avatar
 
Join Date: Mar 2008
Fan#: 54020
Location: SoCal, Hemet
What I Drive: 2003 Sangria Red ZX3

Posts: 28
FF Reputation: 1 951_Zx3 Good Standing Member
Buy-Sell-Trade Rating: (0)
Quote:
Originally Posted by jetrinka View Post
I wish you had read the code. lol. It would have told you which it was and you could go from there. I can almost be certain that regardless of plug type, a coil is going bad.
Yeah, Prolly should have. I dont Have a scanner and I heard that Auto Zone will no longer pull the code for you, something about taking business away from shops or something.
951_Zx3 is offline  
    Reply With Quote
Reply

Bookmarks & Social Networks

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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Duratec vs zetec opus1 ZETEC Performance (2000-2004) 32 08-21-2007 08:39 AM
2.0 Duratec VS. 2.3 Duratec InFocus66 DURATEC Performance (2003-2007) 99 05-13-2007 11:50 AM
Cosworth 4-1 Duratec header to fit MK2 focus vin0410 DURATEC Performance (2003-2007) 4 03-13-2007 12:36 PM
duratec 24v v6??? brandon0133 DURATEC Performance (2003-2007) 4 08-14-2006 09:08 PM
Duratec Turbo blkZX32005 DURATEC Performance (2003-2007) 36 03-04-2006 12:35 AM


All times are GMT -5. The time now is 08:10 PM.


Copyright 2002-2014 FocusFanatics.com. All Rights Reserved : Terms of Use : Privacy Policy : Advertise Information : Site Map

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 Acura TLX or Fiesta ST. You can find all Ford Focus and Focus ST related information here. Join our Ford Focus discussion forums and chat with local Focus enthusiasts in your area.