Plugs and Gap, Missing but no CEL

[96_Lincoln_LSC]

OK Just curious...
I was noticing a slight hesitation and I mean slight...
I decided to change the wires and plugs, I bought 8 Autolite AP104 plugs there platinum single core.. anyway.. out of the 8 I could only get 6 to actually screw into the heads, so I had to reuse 2 of the older plugs that looked to be in good shape.. they screwed right in but the new ones did not Tried for 30 min on the last 2 Cly. anyway I took my daily commute 84 mile this morning and notice a pronounced miss, it did not force the CEL to indicate a problem, and it only felt like a miss that occurred maybe 4 times the entire trip... Could this be due to the old plugs or am I using the wrong plugs? Also I was told the Gap was .054 Is this correct or the wrong gap and the cause of the miss? it seemed large but its the first time I have had to change the plugs....
Thanks in advance,
Bill

 

[NoLimit95]

Nothing better is coming from the platinum and if two aren't screwing in right, it makes me wonder about the other 6. I would get some Autolite 764's copper core and gap them at .54 and the hesitation should be stopped.

 

[jrherald420]

Nothing better is coming from the platinum and if two aren't screwing in right, it makes me wonder about the other 6. I would get some Autolite 764's copper core and gap them at .54 and the hesitation should be stopped.

LOL i hope you mean .054"..........factory specs are .052"-.056" and 7-15 ft lbs of torque.

 

[NoLimit95]

LOL i hope you mean .054"..........factory specs are .052"-.056" and 7-15 ft lbs of torque.

Yes, the .54 was just for short. Now I had to come back and explain myself which has made the entire answer longer. The best gap is .054 and if anyone has a plug gapper that reads .54, please let me know. I have always been told not to take shortcuts lol.

 

[jrherald420]

Lol

 

[wood_e]

It would take the hand of God to arc the .54 gapped plug!

 

[96_Lincoln_LSC]

Nothing better is coming from the platinum and if two aren't screwing in right, it makes me wonder about the other 6. I would get some Autolite 764's copper core and gap them at .54 and the hesitation should be stopped.

What is truly the difference between the cores?? IE Copper vs Platinum?? Does the Copper burn hotter more spark.. anyone know the real difference?
Thanks
and yes I was considering why a batch of 8 new plugs, why did 2 not screw in correctly? I did not force any plugs in and then they all sat correctly so I'm pretty confident I did not cross thread them..

Is it OK to use Antiseize on the plugs, if I have to remove them I was considering applying it for future removal as the older ones were tight enough to concern me for fear of breaking the porcelain..

 

[NoLimit95]

What is truly the difference between the cores?? IE Copper vs Platinum?? Does the Copper burn hotter more spark.. anyone know the real difference?
Thanks
and yes I was considering why a batch of 8 new plugs, why did 2 not screw in correctly? I did not force any plugs in and then they all sat correctly so I'm pretty confident I did not cross thread them..

Is it OK to use Antiseize on the plugs, if I have to remove them I was considering applying it for future removal as the older ones were tight enough to concern me for fear of breaking the porcelain..

Copper is going to give you better spark and using anti-seize is a very good thing to do when you change plugs. It's recommended to use. Also, changing plugs while the engine is coldest is best. I mean that by (engine temp) and not outside temp lol. I have jr. watching me. Ohhh "platinum is supposed to last longer"

 

[wood_e]

I had copped in for 2 years. I'm going to replace them with motorcraft plats only because i got an awesome deal on a set. Will I be able to tell the difference? Probably not...

 

[jrherald420]

:shifty::shifty:

 

[NoLimit95]

I had copped in for 2 years. I'm going to replace them with motorcraft plats only because i got an awesome deal on a set. Will I be able to tell the difference? Probably not...

Unless they were cheaper than a set of copper 764's, you really didn't get a deal. Just being honest.

When you pull the coppers out, look at the thread length on them compared to the Motorcraft platinum's. Platinum thread length is longer.

 

[jrherald420]

Theres alot of good info on this site about spark plugs....... http://www.autolite.com/carcare/techSpecs.php

 

[96_Lincoln_LSC]

It would take the hand of God to arc the .54 gapped plug!

Nah, Just 1.25 Gigawatt to make to arc!! Lol

 

[NoLimit95]

Theres alot of good info on this site about spark plugs....... http://www.autolite.com/carcare/techSpecs.php

I learned why some are full thread and half thread lol. They both go into the chamber the same distance. Platinum is supposed to give you 50,000 miles of use. I'm not running no plugs 50,000 miles. I'm sticking with copper core once a year. Too cheap not to and it's not that hard of a job to do.

 

[jrherald420]

Yeah, these cars are way to easy to change out plugs......now my V6 Firebird......F*ck that!!!! lol Its a 3 hour job for 6 plugs and wires!!!!! Ill NEVER change out those plugs again unless im getting payed to do it.

 

[96_Lincoln_LSC]

AllData say two different types of Plugs used!

OK I've got something that might clear up a few things from ALLDATA...
Did you know Lincoln Used 2 types of Plugs... Cyl, 1,2,3 and 4 used this style and 5,6,7,and 8 used another.... according to this... Copied and pasted from Alldata..

1996 Lincoln Mark VIII V8-4.6L DOHC Copyright © 2008, ALLDATA 9.90 Page 1
Spark Plug: Application and ID
Three Different Styles
AWSF-32E spark plugs have a platinum enhanced center electrode and are used in cylinders 5,6,7 and 8. AWSF-32EG spark plugs have a
platinum enhanced ground (side) electrode and are used in cylinders 1,2,3 and 4.
Reusing Spark Plugs
If any spark plug is removed and re-installed, it must be re-installed in the same cylinder from which it was removed.
Installing New Spark Plugs
If any spark plug is replaced, use only spark plugs with part number AWSF-32EE (as listed on the Vehicle Engine Code Identification (VECI)
label. This replacement spark plug has a double platinum enhancement on both the center and ground electrode and may be used in all eight
cylinders.

 

[NoLimit95]

New one on me. Hope they didn't do that on the 95 because 764's all fit perfect and I can't even feel that car idle.

 

[96_Lincoln_LSC]

New one on me. Hope they didn't do that on the 95 because 764's all fit perfect and I can't even feel that car idle.

1998 Lincoln Mark VIII V8-281 4.6L DOHC VIN V MFI Copyright © 2008, ALLDATA 9.90 Page 1
Spark Plug: Application and ID
Spark Plug Type ........................................................................ AWSF-32E


1997 Lincoln Mark VIII V8-281 4.6L DOHC VIN V MFI Copyright © 2008, ALLDATA 9.90 Page 1
Spark Plug: Application and ID
Spark Plug Type ........................................................................ AWSF-32EE (a)
(a) Three different styles of platinum-enhanced spark plugs are produced for the 4.6L (4V) engine. Each spark plug has a different part number and
use.
^ AWSF-32E spark plugs have a platinum-enhanced center electrode and are used in cylinders 5, 6, 7 and 8.
^ AWSF-32EG spark plugs have a platinum-enhanced ground (side) electrode and are used in cylinders 1, 2, 3 and 4.
^ If any spark plug is removed and re-installed, it MUST be installed in the same cylinder from which it was removed. If any spark plug is replaced, use only spark plugs with part number AWSF-32EE (as listed on the VECI label). This replacement spark plug has double platinum-enhancement on both the center and ground electrode and may be used in all eight cylinders.

1996 Lincoln Mark VIII V8-4.6L DOHC Copyright © 2008, ALLDATA 9.90 Page 1
Spark Plug: Application and ID
Three Different Styles
AWSF-32E spark plugs have a platinum enhanced center electrode and are used in cylinders 5,6,7 and 8. AWSF-32EG spark plugs have a platinum enhanced ground (side) electrode and are used in cylinders 1,2,3 and 4.
Reusing Spark Plugs
If any spark plug is removed and re-installed, it must be re-installed in the same cylinder from which it was removed.
Installing New Spark Plugs
If any spark plug is replaced, use only spark plugs with part number AWSF-32EE (as listed on the Vehicle Engine Code Identification (VECI) label. This replacement spark plug has a double platinum enhancement on both the center and ground electrode and may be used in all eight cylinders.

Well heres what they say about 95..

1995 Lincoln Mark VIII V8-4.6L DOHC Copyright © 2008, ALLDATA 9.90 Page 1
Spark Plug: Application and ID
Spark Plug Type ..................................................................................................... AWSF-32C

1994 Lincoln Mark VIII V8-4.6L DOHC Copyright © 2008, ALLDATA 9.90 Page 1
Spark Plug: Specifications
Spark Plug Gap
SPARK PLUG
Plug Type ............................................................................................................ Motorcraft AWSF-32C
Electrode Gap ........................................................................................................ 0.052-0.056 in (1.4-1.7 mm)


Direct cut and paste..
Now Im not sure what this crosses to but it looks as if its only one type of plug... figures mine would be different..
Bill

 

[Aquabrit]

Did you know Lincoln Used 2 types of Plugs... Cyl, 1,2,3 and 4 used this style and 5,6,7,and 8 used another.... according to this... Copied and pasted from Alldata..

My SHM book has an explanation for that:

I am sometimes asked why the spark plugs on new Ford 4.6 cars have different part numbers on the plugs from left and right cylinder banks. The reason is that there is a small button of material on the ground electrode on one bank of plugs, and on the center electrode on the other bank. This extra material is to compensate for erosion of the plug as it fires, and one bank fires from the center electrode to the ground strap, while the other bank fires in the reverse direction, from the ground strap to the center electrode. These plugs are replaced with service replacements which all have the extra material on the center electrode, because once the plugs are changed, Ford does not have to meet the 50,000 mile emission requirement any more.

 

[jrherald420]

Ding ding ding we have a winner!!! LOL i was about to post that.

 

[Kstills]

1998 Lincoln Mark VIII V8-281 4.6L DOHC VIN V MFI Copyright © 2008, ALLDATA 9.90 Page 1
Spark Plug: Application and ID
Spark Plug Type ........................................................................ AWSF-32E


1997 Lincoln Mark VIII V8-281 4.6L DOHC VIN V MFI Copyright © 2008, ALLDATA 9.90 Page 1
Spark Plug: Application and ID
Spark Plug Type ........................................................................ AWSF-32EE (a)
(a) Three different styles of platinum-enhanced spark plugs are produced for the 4.6L (4V) engine. Each spark plug has a different part number and
use.
^ AWSF-32E spark plugs have a platinum-enhanced center electrode and are used in cylinders 5, 6, 7 and 8.
^ AWSF-32EG spark plugs have a platinum-enhanced ground (side) electrode and are used in cylinders 1, 2, 3 and 4.
^ If any spark plug is removed and re-installed, it MUST be installed in the same cylinder from which it was removed. If any spark plug is replaced, use only spark plugs with part number AWSF-32EE (as listed on the VECI label). This replacement spark plug has double platinum-enhancement on both the center and ground electrode and may be used in all eight cylinders.

1996 Lincoln Mark VIII V8-4.6L DOHC Copyright © 2008, ALLDATA 9.90 Page 1
Spark Plug: Application and ID
Three Different Styles
AWSF-32E spark plugs have a platinum enhanced center electrode and are used in cylinders 5,6,7 and 8. AWSF-32EG spark plugs have a platinum enhanced ground (side) electrode and are used in cylinders 1,2,3 and 4.
Reusing Spark Plugs
If any spark plug is removed and re-installed, it must be re-installed in the same cylinder from which it was removed.
Installing New Spark Plugs
If any spark plug is replaced, use only spark plugs with part number AWSF-32EE (as listed on the Vehicle Engine Code Identification (VECI) label. This replacement spark plug has a double platinum enhancement on both the center and ground electrode and may be used in all eight cylinders.

Well heres what they say about 95..

1995 Lincoln Mark VIII V8-4.6L DOHC Copyright © 2008, ALLDATA 9.90 Page 1
Spark Plug: Application and ID
Spark Plug Type ..................................................................................................... AWSF-32C

1994 Lincoln Mark VIII V8-4.6L DOHC Copyright © 2008, ALLDATA 9.90 Page 1
Spark Plug: Specifications
Spark Plug Gap
SPARK PLUG
Plug Type ............................................................................................................ Motorcraft AWSF-32C
Electrode Gap ........................................................................................................ 0.052-0.056 in (1.4-1.7 mm)


Direct cut and paste..
Now Im not sure what this crosses to but it looks as if its only one type of plug... figures mine would be different..
Bill

So you get those EE's and you should be golden, no?

And nice find, btw. Should go to the tech section, maybe.

 

[96_Lincoln_LSC]

Im not sure if this really makes a sticky but hey I'll take it...
I have to check what the plugs cross over too....
Thanks
Bill

I hope this clears up something

 

[NoLimit95]

1996 can use one type of plug. Below is in the last paragraph of what you copied and pasted here for the 96...

If any spark plug is replaced, use only spark plugs with part number AWSF-32EE (as listed on the Vehicle Engine Code Identification (VECI) label. This replacement spark plug has a double platinum enhancement on both the center and ground electrode and may be used in all eight cylinders.

 

[invisiblem0nst3r]

i just got some ngk g power plugs will these not work?

 

[Sapperfire]

You should also replace the plugs with the motor cool, no anti-seize should be used if done properly