SVT Focus - Aftermarket Spark Plugs - Focaljet

**COSVT03** · 03-31-2006, 07:48 AM

*WARNING* Following post may contain graphic images-Viewer Discretion IS advised.

***Do Not Buy ANY Plug besides the Denso Iridium*** Denso is the ONLY company besides Ford that sells the right spark plug for the SVT motor - All other spark plugs are VERY likely to cause engine damage.
***The aftermarket plugs are for the regular zetec engine and are the wrong heat range***

~If you dont believe me look up spark plugs and heat ranges and dagers on google~

*This thread does not apply to Ford -or- Tuner Companies* ~Be sure to contact them and order the right plug for your SVT~

I just wanted to let everyone know. In my never ending obligation to serve the focus community. If any of y'all keep track of me I tend to do a "little" bit of research on parts. Like my list of parts for the Quaife/Torsen install. (I dont think very many people really care because not many people have them. But that list has everything you need for the install) I have a friend with an SVT Focus that has run into a small problem.

Picture:
http://www.imagestation.com/picture/...b/efa168ef.jpg
Bigger Pictures:
http://www.imagestation.com/picture/...a/efa1689a.jpg
http://www.imagestation.com/picture/...0/efa16899.jpg

His new compression results are IN!!!

Cylinder #1 ~88LBS~ Cylinder #2 ~89LBS~ Cylinder #3 ~4lbs~ Cylinder #4 ~87LBS~

Aftermarket Spark Plug Line-Up

Ford Plugs -
SVT Part #AYFS092FECF4
DOHC Zetec #AZFS32FEF4

DENSO -
Iridium Part #ITV24 SVT Engine Vin-5
Iridium Part #ITV16 DOHC Zetec Vin-3

Bosch - Does not make ANY plugs for the SVT Focus

NGK -
Double Platinum Stock #2467 Iridium Part #PTR5A-13 SVT Engine Vin-5
Double Platinum Stock #2467 Iridium Part #PTR5A-13 DOHC Zetec Vin-3 (Non SVT)

Autolite -
Part #APP5364 & #XP5364 SVT Engine Vin-5
Part #APP5364 & #XP5364 DOHC Zetec Vin-3 (Non SVT)

Champion -
Iridium Part #9402 SVT Engine Vin-5 -
No part number for Vin-3 (Non SVT)

Split Fire - Part #SF514D DOHC Zetec Vin-3 (Non SVT)
No part number for SVT Engine Vin-5

**BrokenSVT** · 03-31-2006, 08:29 AM

You may want to add to the list the Motorcraft applications for the Focus, both platinums and coppers.

Greg

**SVTADAM** · 03-31-2006, 08:37 AM

This would be a good refrence link for a sticky.

**Evan_Murphy** · 03-31-2006, 08:45 AM

whew...I just bought some Denso plugs...

**BTWaid** · 03-31-2006, 12:16 PM

So, what kind of plugs are those that failed? Is your friend running forced induction? Do you have any idea WHY that plug failed? Can you give a reason for not buying anything but the Densos...how do the other plugs not fit? Thanks for the list.

Bryan

**COSVT03** · 03-31-2006, 12:20 PM

*Deleted*

**guitarde** · 03-31-2006, 12:40 PM

I'm thinking you mean just OEM plugs in general. Of course you wouldn't use the standard zetec plugs because they are not in the same heat range, as the SVT are colder. That should be common sense there. However, you can still use the Motorcraft AZFS22C as they are colder. The key is to research before you go and put some other type of spark plug in your motor.

**COSVT03** · 03-31-2006, 08:22 PM

This is how I will explain it. If you have any further questions send me a PM

The ONLY aftermarket company that makes the CORRECT plug for the SVT is DENSO - Period.

ALL the other companies sell the regular ZETEC plug as an svt plug and it is NOT for the svt.

**BrokenSVT** · 04-03-2006, 10:18 AM

I'm guessing that EVERY aftermarket company who makes spark plugs makes a CORRECT plug for the SVTF. My guess is that the parts companies(AutoZone, Advanced, NAPA, etc.) have them referenced wrong, like they do most every part for the SVTF. Ever try to buy brake pads from one of these places without the correct part # in hand???

I'm not trying to be rude, just placing blame where it's due. It's not the spark plug companies, it's likely the Parts Jockey Inc. syndrome.

Greg

**OrangeSVT03** · 04-03-2006, 10:39 AM

Dont forget the MotorCraft AZFS22C f4 plug.

They work great in the SVT.

**COSVT03** · 04-03-2006, 11:21 AM

Ok Broken- I dont think you have any idea how extensive I do my research.

No they DO NOT make a CORRECT plug for the SVT.
No they DO NOT make a CORRECT plug for the SVT. (Right off the counter in a box)
Now if you ordered a specialty plug with the right heat range from them yes it would be the right plug.
BUT- RIGHT Over the counter part numbers/plugs THEY DO NOT make the CORRECT plug for the SVT

It is not the parts counter persons fault.
No it is not the fault of the customer.
No it is not the fault for not doing research.

EVERYTHING comes up OK - UNTILL you actually put them side by side and say HEY- these look different. I don't think that right. A heat range is based on how deep the ceramic goes into the cylinder. The stock svt plug is about a quarter inch deep. The stock zetec plug is about half and inch deep. There is a big difference.

Denso is the only one that makes the correct plugs for the SVT.

Now also I have had numerous PM's about this post with people being confused. So if you want to call up NGK-Bosche-Champion-Autolite and sit on hold just to inform there claims & technical service departments that Autolite is in the process of shelling out ****.** dollars for a blown engine and have them all verify the information I have just gave you. Be my guest. Untill you make it that far please dont comment on all the research and information I have gathered and put forth for EVERYONES use and the sake of there pocketbook.

**dpsilversvt** · 04-03-2006, 12:55 PM

Thanks for doing the research, but if DENSO is the only company that makes the correct plug, why are all the other brands listed? You've got NGK, Autolite, Champion and Split Fire. If none of those fit the SVT then why are they listed here?

**COSVT03** · 04-03-2006, 01:14 PM

So you know that they sell the wrong plug so If you go in and go ohh they make plugs for my car you can think. Ohh wait- That guy on the internet said they sell the same plug for both cars- thats not right, the SVT takes special plugs.

**BTWaid** · 04-04-2006, 04:22 PM

But why does it make a difference? What caused that plug to fail? Is it the different heat range? All you've said is to trust you because you've done the research. Ok, I believe you but I'd like more information. What makes the plugs for our cars special?

Bryan

**COSVT03** · 04-04-2006, 10:04 PM

The heat range is different. The tip of thespark plug is exposed to a lot more heat than any part in the combustion chamber. About 4500* at the time of detonation. Well with the wrong heat range it gets hotter over time the more it sparks the hotter it gets. Well over the time the spark plug melted itself. The tip is gone on the second plug I have. you can see the metal where it melted right off the tip of the plug. The colder the heat range of the plug the smaller they make the tip of the ceramic so it disipates heat quicker. The plugs all the companies are seller are too big and dont disipate the heat quick enough. They will work for a while but when they get older they are bound to burn up quicker.

**RecoilRob** · 04-04-2006, 11:07 PM

What did the plugs in the other three cylinders look like? If the heat range is at fault, one would expect the others to be gone as well. But, that isn't what happened, is it?

Looks like detonation to me which can be caused by other things. I've had too hot a plug in other motors and it caused some fused deposits and light detonation......on all cylinders. But, no damage done.

On the other hand, I had a water injection system failure on an 18psi turbo small-block Chevy and it destroyed #5 & 7 when the head gasket blew. Most of the plugs were missing their ground electrodes completely or were mostly burned off. Detonation=Not good.

I have been running Bosch +4's in the SVT for a month now with no problems. Seems to run fine and doesn't load up like it did with extended idling with the stock heat range plugs.

No, I would NOT do extended Autobahn type flat-out running with them. I HAVE done a couple top speed runs with no problems but only a mile or so. That is about all we can do around here. On your car, it looks like the plug was the victim, not the cause.

**Rodewaryer** · 04-05-2006, 12:46 AM

Cyl's # 2 and #3 in a 4 cylinder engine are bound to go first in any extreme situation involving heat, unless this engine is an engineering marvel. I melted the electrodes off #2 and #3 in a modified Saab Turbo engine since those two cylinders in 4 cyl engines are commonly the two hardest to cool.

His happened to just lose one plug, the other was likely very close to melting as well.

**BTWaid** · 04-05-2006, 08:42 AM

Thanks for the reply...makes more sense now. Of course now I'm paranoid because I've had the Autolite Double Platinums in for 5K now...Yikes.

Bryan

**COSVT03** · 04-05-2006, 10:05 AM

I would spend the 50 dollars for the denso- Mine worked fine for about maybe 5-6K miles. They sell them at Autozone or over the internet.

**Darth_Focus** · 04-07-2006, 11:26 PM

I bought the Motorcraft Coppers from C-F-M (colder heat range) and I cant wait to install em. Ive had a cylinder one misfire from day one on the OEM ignition/ OEM Plugs (bought plugs at the dealer - YIKES). I now have MSD coil, MSD Wires and Copper Plugs. Hopefully that cures it. If not, I'll be buying a set of injectors.

**ArmyFocus** · 04-08-2006, 03:50 AM

Quote:

Originally Posted by COSVT03

I would spend the 50 dollars for the denso- Mine worked fine for about maybe 5-6K miles. They sell them at Autozone or over the internet.

$43.95 on CFM and they offer the stock SVT heat range all the way up to 3 steps colder than stock heat range depending on your hp numbers.

http://focus.c-f-m.com/index.asp?Pag...rodID=171&HS=1

**COSVT03** · 04-08-2006, 03:52 AM

FYI Cylinders 1,2, are down 30lbs but still within spec cylinder 3 is 45lbs out of spec and cylinder 4 is at 126lbs of compression. The plugs worked great for a while . . . I wouldn't trust my 6k bill to a 50 dollar set of plugs. Anyone wanna trade bills?

**ArmyFocus** · 04-08-2006, 03:53 AM

I'm curious now COS. Before I went to the dyno I decided to buy a new set of plugs, so I went to Discount Auto and picked up a set of plugs that they recommended. I can't remember exactly which ones, but they recommended them because the guy claimed they were slightly less per plug than the ones I was going to get (I think the Autolites) and he said they had a colder heat range. I said okay and bought them. Well, after the dyno and tuning I noticed my car sort of sputters when I start it up. Could the plugs possibly be why??

**Cliffjumper** · 04-08-2006, 01:19 PM

Quote:

Originally Posted by COSVT03

*WARNING* Following post may contain graphic images-Viewer Discretion IS advised.

***Do Not Buy ANY Plug besides the Denso Iridium*** Denso is the ONLY company besides Ford that sells the right spark plug for the SVT motor - All other spark plugs are VERY likely to cause engine damage.

Ford Plugs -
SVT Part #AYFS092FECF4

DENSO -
Iridium Part #ITV24 SVT Engine Vin-5

Great info

exactly what I was looking for before I do a tune up on my svt next week

**COSVT03** · 04-08-2006, 01:54 PM

Quote:

Originally Posted by ArmyFocus

I'm curious now COS. Before I went to the dyno I decided to buy a new set of plugs, so I went to Discount Auto and picked up a set of plugs that they recommended. I can't remember exactly which ones, but they recommended them because the guy claimed they were slightly less per plug than the ones I was going to get (I think the Autolites) and he said they had a colder heat range. I said okay and bought them. Well, after the dyno and tuning I noticed my car sort of sputters when I start it up. Could the plugs possibly be why??

Yes. I also had a really bad irratic Idle that was driving me CRAZY. My car runs PERFECT or I'll tear it apart and find out why it isn't. Period. I also had some denso Iridiums ITV16 before denso started selling the 24s for the SVT. They had some wear but were only in my car for a few thousand miles.

03-31-2006, 12:20 PM	#6
COSVT03 TEAM Member Join Date: Oct 2004 Posts: 845	Re: SVT Focus - Aftermarket Spark Plugs Deleted __________________ #3052 of 3985 Last edited by COSVT03 : 04-02-2006 at 01:50 AM.

03-31-2006, 12:40 PM	#7
guitarde TEAM Member Join Date: Jul 2003 Posts: 329	Re: SVT Focus - Aftermarket Spark Plugs I'm thinking you mean just OEM plugs in general. Of course you wouldn't use the standard zetec plugs because they are not in the same heat range, as the SVT are colder. That should be common sense there. However, you can still use the Motorcraft AZFS22C as they are colder. The key is to research before you go and put some other type of spark plug in your motor.

03-31-2006, 08:22 PM	#8
COSVT03 TEAM Member Join Date: Oct 2004 Posts: 845	Re: SVT Focus - Aftermarket Spark Plugs This is how I will explain it. If you have any further questions send me a PM The ONLY aftermarket company that makes the CORRECT plug for the SVT is DENSO - Period. ALL the other companies sell the regular ZETEC plug as an svt plug and it is NOT for the svt. __________________ #3052 of 3985 Last edited by COSVT03 : 04-02-2006 at 01:52 AM.

04-03-2006, 10:39 AM	#10
OrangeSVT03 Senior TEAM Member Join Date: Apr 2004 Location: Waverly , Ohio Posts: 4,326	Re: SVT Focus - Aftermarket Spark Plugs Dont forget the MotorCraft AZFS22C f4 plug. They work great in the SVT. __________________ 2003 SVT Focus Comp Orange Euro Package #3474 of 3985 Date of Birth July 31, 03 Turbo,Quaife and a bunch of other crap 362whp/316wtq 22PSI on 93 octane......courtesy of Focus-Power and SuperSnailFab

04-03-2006, 11:21 AM	#11
COSVT03 TEAM Member Join Date: Oct 2004 Posts: 845	Re: SVT Focus - Aftermarket Spark Plugs Ok Broken- I dont think you have any idea how extensive I do my research. No they DO NOT make a CORRECT plug for the SVT. No they DO NOT make a CORRECT plug for the SVT. (Right off the counter in a box) Now if you ordered a specialty plug with the right heat range from them yes it would be the right plug. BUT- RIGHT Over the counter part numbers/plugs THEY DO NOT make the CORRECT plug for the SVT It is not the parts counter persons fault. No it is not the fault of the customer. No it is not the fault for not doing research. EVERYTHING comes up OK - UNTILL you actually put them side by side and say HEY- these look different. I don't think that right. A heat range is based on how deep the ceramic goes into the cylinder. The stock svt plug is about a quarter inch deep. The stock zetec plug is about half and inch deep. There is a big difference. Denso is the only one that makes the correct plugs for the SVT. Now also I have had numerous PM's about this post with people being confused. So if you want to call up NGK-Bosche-Champion-Autolite and sit on hold just to inform there claims & technical service departments that Autolite is in the process of shelling out **. dollars for a blown engine and have them all verify the information I have just gave you. Be my guest. Untill you make it that far please dont comment on all the research and information I have gathered and put forth for EVERYONES use and the sake of there pocketbook. __________________ #3052 of 3985

03-31-2006, 07:48 AM	#1
COSVT03 TEAM Member Join Date: Oct 2004 Posts: 845	SVT Focus - Aftermarket Spark Plugs WARNING Following post may contain graphic images-Viewer Discretion IS advised. *Do Not Buy ANY Plug besides the Denso Iridium* Denso is the ONLY company besides Ford that sells the right spark plug for the SVT motor - All other spark plugs are VERY likely to cause engine damage. *The aftermarket plugs are for the regular zetec engine and are the wrong heat range* ~If you dont believe me look up spark plugs and heat ranges and dagers on google~ This thread does not apply to Ford -or- Tuner Companies ~Be sure to contact them and order the right plug for your SVT~ I just wanted to let everyone know. In my never ending obligation to serve the focus community. If any of y'all keep track of me I tend to do a "little" bit of research on parts. Like my list of parts for the Quaife/Torsen install. (I dont think very many people really care because not many people have them. But that list has everything you need for the install) I have a friend with an SVT Focus that has run into a small problem. Picture: http://www.imagestation.com/picture/...b/efa168ef.jpg Bigger Pictures: http://www.imagestation.com/picture/...a/efa1689a.jpg http://www.imagestation.com/picture/...0/efa16899.jpg His new compression results are IN!!! Cylinder #1 ~88LBS~ Cylinder #2 ~89LBS~ Cylinder #3 ~4lbs~ Cylinder #4 ~87LBS~ Aftermarket Spark Plug Line-Up Ford Plugs - SVT Part #AYFS092FECF4 DOHC Zetec #AZFS32FEF4 DENSO - Iridium Part #ITV24 SVT Engine Vin-5 Iridium Part #ITV16 DOHC Zetec Vin-3 Bosch - Does not make ANY plugs for the SVT Focus NGK - Double Platinum Stock #2467 Iridium Part #PTR5A-13 SVT Engine Vin-5 Double Platinum Stock #2467 Iridium Part #PTR5A-13 DOHC Zetec Vin-3 (Non SVT) Autolite - Part #APP5364 & #XP5364 SVT Engine Vin-5 Part #APP5364 & #XP5364 DOHC Zetec Vin-3 (Non SVT) Champion - Iridium Part #9402 SVT Engine Vin-5 - No part number for Vin-3 (Non SVT) Split Fire - Part #SF514D DOHC Zetec Vin-3 (Non SVT) No part number for SVT Engine Vin-5 __________________ #3052 of 3985 Last edited by COSVT03 : 03-31-2006 at 12:23 PM.

03-31-2006, 08:29 AM	#2
BrokenSVT Senior TEAM Member Join Date: Sep 2005 Location: Southern Ohio Posts: 1,918	Re: SVT Focus - Aftermarket Spark Plugs You may want to add to the list the Motorcraft applications for the Focus, both platinums and coppers. Greg __________________ 2003 CD Silver SVT Sunroof and Machs #1229 of 3985 Date of Birth April 21, 2003 Borla Cat-Back/SVTF tip,Custom ORP,Steeda Short Throw,FRPP 9mm Plug Wires,Upgraded "Big 3",HIA Short Ram,Xcal2 tuned by FocusSport,SRF Stage 2 TB,EAP Wheels(thanks John),Audiophile sub(thanks John), Euro Grill(thanks Aaron),Clear Bumper Lenses(thanks Shawn), Tinted Tails & Fogs 2001 Infra Red SE The "Festata"--look out!

03-31-2006, 08:37 AM	#3
SVTADAM Senior TEAM Member Join Date: Sep 2002 Location: Connecticut Posts: 3,037	Re: SVT Focus - Aftermarket Spark Plugs This would be a good refrence link for a sticky. __________________ Black Aria...#1211 built in 2002 Rain...1990 Ford Escort Wagon "Dear Diary...Jackpot!" Giggity Giggity Goo!

03-31-2006, 08:45 AM	#4
Evan_Murphy TEAM Member Join Date: Jul 2003 Location: Manasquan NJ Posts: 803	Re: SVT Focus - Aftermarket Spark Plugs whew...I just bought some Denso plugs... __________________ Fo·cused, v. intr. 3.To concentrate attention or energy 2003 Turbo SVT Focus

03-31-2006, 12:16 PM	#5
BTWaid TEAM Member Join Date: Jul 2001 Location: Kettering, OH. USA Posts: 122	Re: SVT Focus - Aftermarket Spark Plugs So, what kind of plugs are those that failed? Is your friend running forced induction? Do you have any idea WHY that plug failed? Can you give a reason for not buying anything but the Densos...how do the other plugs not fit? Thanks for the list. Bryan

04-03-2006, 10:18 AM	#9
BrokenSVT Senior TEAM Member Join Date: Sep 2005 Location: Southern Ohio Posts: 1,918	Re: SVT Focus - Aftermarket Spark Plugs I'm guessing that EVERY aftermarket company who makes spark plugs makes a CORRECT plug for the SVTF. My guess is that the parts companies(AutoZone, Advanced, NAPA, etc.) have them referenced wrong, like they do most every part for the SVTF. Ever try to buy brake pads from one of these places without the correct part # in hand??? I'm not trying to be rude, just placing blame where it's due. It's not the spark plug companies, it's likely the Parts Jockey Inc. syndrome. Greg __________________ 2003 CD Silver SVT Sunroof and Machs #1229 of 3985 Date of Birth April 21, 2003 Borla Cat-Back/SVTF tip,Custom ORP,Steeda Short Throw,FRPP 9mm Plug Wires,Upgraded "Big 3",HIA Short Ram,Xcal2 tuned by FocusSport,SRF Stage 2 TB,EAP Wheels(thanks John),Audiophile sub(thanks John), Euro Grill(thanks Aaron),Clear Bumper Lenses(thanks Shawn), Tinted Tails & Fogs 2001 Infra Red SE The "Festata"--look out!

04-03-2006, 12:55 PM	#12
dpsilversvt Senior TEAM Member Join Date: Oct 2002 Location: Cedar Creek, TX Posts: 1,876	Re: SVT Focus - Aftermarket Spark Plugs Thanks for doing the research, but if DENSO is the only company that makes the correct plug, why are all the other brands listed? You've got NGK, Autolite, Champion and Split Fire. If none of those fit the SVT then why are they listed here? __________________ Sold my focus. Driving a 2005 Ford 500.

04-03-2006, 01:14 PM	#13
COSVT03 TEAM Member Join Date: Oct 2004 Posts: 845	Re: SVT Focus - Aftermarket Spark Plugs So you know that they sell the wrong plug so If you go in and go ohh they make plugs for my car you can think. Ohh wait- That guy on the internet said they sell the same plug for both cars- thats not right, the SVT takes special plugs. __________________ #3052 of 3985

04-04-2006, 04:22 PM	#14
BTWaid TEAM Member Join Date: Jul 2001 Location: Kettering, OH. USA Posts: 122	Re: SVT Focus - Aftermarket Spark Plugs But why does it make a difference? What caused that plug to fail? Is it the different heat range? All you've said is to trust you because you've done the research. Ok, I believe you but I'd like more information. What makes the plugs for our cars special? Bryan

04-04-2006, 10:04 PM	#15
COSVT03 TEAM Member Join Date: Oct 2004 Posts: 845	Re: SVT Focus - Aftermarket Spark Plugs The heat range is different. The tip of thespark plug is exposed to a lot more heat than any part in the combustion chamber. About 4500* at the time of detonation. Well with the wrong heat range it gets hotter over time the more it sparks the hotter it gets. Well over the time the spark plug melted itself. The tip is gone on the second plug I have. you can see the metal where it melted right off the tip of the plug. The colder the heat range of the plug the smaller they make the tip of the ceramic so it disipates heat quicker. The plugs all the companies are seller are too big and dont disipate the heat quick enough. They will work for a while but when they get older they are bound to burn up quicker. __________________ #3052 of 3985

04-04-2006, 11:07 PM	#16
RecoilRob TEAM Member Join Date: Aug 2004 Location: Uniontown, PA Posts: 130	Re: SVT Focus - Aftermarket Spark Plugs What did the plugs in the other three cylinders look like? If the heat range is at fault, one would expect the others to be gone as well. But, that isn't what happened, is it? Looks like detonation to me which can be caused by other things. I've had too hot a plug in other motors and it caused some fused deposits and light detonation......on all cylinders. But, no damage done. On the other hand, I had a water injection system failure on an 18psi turbo small-block Chevy and it destroyed #5 & 7 when the head gasket blew. Most of the plugs were missing their ground electrodes completely or were mostly burned off. Detonation=Not good. I have been running Bosch +4's in the SVT for a month now with no problems. Seems to run fine and doesn't load up like it did with extended idling with the stock heat range plugs. No, I would NOT do extended Autobahn type flat-out running with them. I HAVE done a couple top speed runs with no problems but only a mile or so. That is about all we can do around here. On your car, it looks like the plug was the victim, not the cause.

04-05-2006, 12:46 AM	#17
Rodewaryer Senior TEAM Member Join Date: Mar 2001 Location: Phoenix, Az. USA Posts: 2,891	Re: SVT Focus - Aftermarket Spark Plugs Cyl's # 2 and #3 in a 4 cylinder engine are bound to go first in any extreme situation involving heat, unless this engine is an engineering marvel. I melted the electrodes off #2 and #3 in a modified Saab Turbo engine since those two cylinders in 4 cyl engines are commonly the two hardest to cool. His happened to just lose one plug, the other was likely very close to melting as well. __________________ Rodewaryer (Mel Gibson only acted the part) 2002 Sonic Blue SVT Once driven to the Darkside, there's no turning back.

04-05-2006, 08:42 AM	#18
BTWaid TEAM Member Join Date: Jul 2001 Location: Kettering, OH. USA Posts: 122	Re: SVT Focus - Aftermarket Spark Plugs Thanks for the reply...makes more sense now. Of course now I'm paranoid because I've had the Autolite Double Platinums in for 5K now...Yikes. Bryan

04-05-2006, 10:05 AM	#19
COSVT03 TEAM Member Join Date: Oct 2004 Posts: 845	Re: SVT Focus - Aftermarket Spark Plugs I would spend the 50 dollars for the denso- Mine worked fine for about maybe 5-6K miles. They sell them at Autozone or over the internet. __________________ #3052 of 3985

04-07-2006, 11:26 PM	#20
Darth_Focus TEAM Member Join Date: Jun 2005 Posts: 659	Re: SVT Focus - Aftermarket Spark Plugs I bought the Motorcraft Coppers from C-F-M (colder heat range) and I cant wait to install em. Ive had a cylinder one misfire from day one on the OEM ignition/ OEM Plugs (bought plugs at the dealer - YIKES). I now have MSD coil, MSD Wires and Copper Plugs. Hopefully that cures it. If not, I'll be buying a set of injectors. __________________ Russ Rudez & 02 SVT Focus #1568 of 4588 2002 Turbo SVT Focus - Going to a new home 1988 Mazda 323 GTX - The origional WRC car!

04-08-2006, 03:52 AM	#22
COSVT03 TEAM Member Join Date: Oct 2004 Posts: 845	Re: SVT Focus - Aftermarket Spark Plugs FYI Cylinders 1,2, are down 30lbs but still within spec cylinder 3 is 45lbs out of spec and cylinder 4 is at 126lbs of compression. The plugs worked great for a while . . . I wouldn't trust my 6k bill to a 50 dollar set of plugs. Anyone wanna trade bills? __________________ #3052 of 3985

04-08-2006, 03:53 AM	#23
ArmyFocus Senior TEAM Member Join Date: Jan 2006 Location: your mom's house Posts: 2,710	Re: SVT Focus - Aftermarket Spark Plugs I'm curious now COS. Before I went to the dyno I decided to buy a new set of plugs, so I went to Discount Auto and picked up a set of plugs that they recommended. I can't remember exactly which ones, but they recommended them because the guy claimed they were slightly less per plug than the ones I was going to get (I think the Autolites) and he said they had a colder heat range. I said okay and bought them. Well, after the dyno and tuning I noticed my car sort of sputters when I start it up. Could the plugs possibly be why?? __________________ 2006 Dodge Ram SLT 4x4 Quad cab. Custom exhaust, Alpine and JL Audio sound system Old: 2002 ProCharged SVTF 2000 Dodge Dakota

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