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#800328 - 10/15/05 01:17 AM how do you change the spark plugs?
Chister Offline
Climber

Registered: 10/03/05
Posts: 999
Loc: Cypress, CA
I have a 03 CV 4.6. the fuel rail is right on top of the spark coils. How do you replace the spark plugs? do you have to first remove the fuel rail? if so, isn't that dangerous?


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_________________________
2003 CV w HPP - 4.6/4R70W, 47K
1992 F250 - 351/5 speed man, 70K
1978 Chevy Caprice 2 door - 350 4bbl/T350, 260K <- all time favorite car!

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#800329 - 10/15/05 01:25 AM Re: how do you change the spark plugs?
99_03PantherS Offline
Poobah

Registered: 03/22/03
Posts: 9471
Loc: NW side Chicago
no need to take off fuel rail. just get a 10mm socket and take off them black things (COPS) then you have access to the plugs.
_________________________

Jason G. Replaced 1st intake manifold at 15. haha
'03 Marquis: 67K,15.31 @ 91.19, MZT 93 octane tune, P&P Aviator T/B, duals with rear cats missing, 3.27 Trac loc 31 spline rear, sway bars, tints, badgeless grille..blahblah various exterior mods *NEW* Steeda pulleys and Towncar rims
'08 F-450 6.4 Powerstroke: DPF,EGR delete, Spartan powered tuner.

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#800330 - 10/15/05 02:11 AM Re: how do you change the spark plugs?
cvpi71 Offline
Mr. Kozmo
Grand Poobah

Registered: 01/28/02
Posts: 13886
Loc: member since 8/2001 lost in Ma...
Quote:

I have a 03 CV 4.6. the fuel rail is right on top of the spark coils. How do you replace the spark plugs? do you have to first remove the fuel rail? if so, isn't that dangerous?



it's only been discussed like a gazillion times on here. scroll down a few threads and you will see.
_________________________

R.I.P Elfy 6/06
97 PI

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#800331 - 10/15/05 08:30 AM Re: how do you change the spark plugs?
Trouper Offline

Over the Hill

Registered: 12/03/00
Posts: 1738
Loc: West TN
Justa question, but in a 2003 model, why would you need to change the spark plugs this soon? The 4.6 shouldn't need to have the original plugs changed for many-many miles! It's not like the old days when you needed to change them with every tune-up. These newer ones can go for years!
_________________________
1999 Crown Victoria HPP -
Too "Heavily Modified" to list it all here.
If you MUST know, then please ask me.


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#800332 - 10/15/05 09:08 AM Re: how do you change the spark plugs?
SmokeyHPP Offline
Member

Registered: 11/16/03
Posts: 335
Loc: Lufkin, TX
He may have had the same problem I did. Mine started missing sporadictly last week and finally got to where it had a dead miss in it. Since I am out of the 36K mile warranty it now costs me a $100 deductible to take it to the dealer. I pulled my plugs and they looked weird, kinda an orange coating on them. I was almost empty on the fuel so I put new factory spec plugs in, replaced the fuel filter and filled up with 93 octane from where I normally get gas. Maybe I got some funky gas or something the last fillup. There have been reports of inferior grade/quality of fuel in this area during hurrican Rita. The last fill up I had to put 89 octane in it while in another city as that was all that was available. Seems to run ok now, except for a slight hesitation when first taking off. Still runs strong when you put your foot in it. I am going to let it run for awhile with the new tank of gas and see what happens.
_________________________
2004 Crown Vic LX Silver Birch / Dark Charcoal Leather, Marauder Steering Wheel, Graphite Dash Trim Overlay, AM/FM/6 CD In-Dash Changer, Dual Exhaust / Stainless turn down tips, SCT XCal2 Tuner, LX Sport 17" Wheels, 3.55 Traction Lok, 11" Tailshaft housing, Aluminum Marauder Driveshaft, AutoPage Remote Start
Some of my past cars: http://rides.smokeys.org/files/
Retired Texas LEO - 22 years.
My 2004 CV LX

Replaced on 03-01-06 with 2003 Lincoln LS V8 Sport

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#800333 - 10/15/05 11:52 AM Re: how do you change the spark plugs?
galaxie64 Offline
Climber

Registered: 10/18/04
Posts: 775
Loc: Cheyenne, WY
*IF* you do take the fuel rail off, it is not dangerous. You just need to make sure the O rings all go back in right and you may need to lube them a bit to get them to seat right.

If you are worried about the fuel pressure simply take the Fuel pump fuse out and crank the engine over. This is also the easiest way to relieve pressure to replace the filter.
_________________________
--------------------------------------------------
'92 GMQ, went to killer
----
'08 Bullit (Sold)
'01 P71-Old Driver
'97 F150 Reg Cab 5.4L
'64 Galaxie500 352 4bbl
'09 F150
'08 CVPI- Driver

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#800334 - 10/15/05 06:17 PM Re: how do you change the spark plugs?
GhostRider Offline

Posting Addict

Registered: 04/14/03
Posts: 15105
Loc: (Area of) Columbus, Ohio USA
Quote:

Justa question, but in a 2003 model, why would you need to change the spark plugs this soon? The 4.6 shouldn't need to have the original plugs changed for many-many miles! It's not like the old days when you needed to change them with every tune-up. These newer ones can go for years!




On a 2003 CVPI, Ford recommends you change the spark plugs every 100K miles.
_________________________
-Tim

1997 Ford Crown Victoria Police Interceptor (12-23-02 to 11-21-07)
2006 Ford Crown Victoria Police Interceptor (7-11-07 to 8-31-13)
2013 Ford Taurus Limited (8-31-13 to Present)

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#800335 - 10/15/05 06:28 PM Re: how do you change the spark plugs?
BigTomZ Offline
Over the Hill

Registered: 02/24/04
Posts: 1258
Loc: Alexandria, VA
Maybe he's gonna be coming up on 100k soon and would rather know now than later.
_________________________
2000 Grand Marquis LS HPP - Marauder airbox with 80mm MAF, 04 P71 zip tube, ADTR ported upper intake, SCT Xcalibrator with Reinhart custom tuning, Steeda underdrives, Gatorback belt, 3.55 gears, 11.25" torque converter, dual exhaust, Flowmaster 40's, 3" tailpipes. Alpine CDA-7998 CD/MP3 player, JL Audio 500/1 amp, JL Audio 300/4 amp, 2 Infinity Perfect 12 inch subwoofers, Boston Acoustic door and deck speakers, Stinger 1 farad capacitor.

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#800336 - 10/15/05 07:54 PM Re: how do you change the spark plugs?
galaxie64 Offline
Climber

Registered: 10/18/04
Posts: 775
Loc: Cheyenne, WY
If you wait till 100K you are asking for trouble. 60-70K max as far as I am concerned.
_________________________
--------------------------------------------------
'92 GMQ, went to killer
----
'08 Bullit (Sold)
'01 P71-Old Driver
'97 F150 Reg Cab 5.4L
'64 Galaxie500 352 4bbl
'09 F150
'08 CVPI- Driver

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#800337 - 10/17/05 12:49 AM Re: how do you change the spark plugs?
Chister Offline
Climber

Registered: 10/03/05
Posts: 999
Loc: Cypress, CA
thanks for the replies guys!

I have 30K miles on the car and I think the plugs should be good for a while longer. I had a 97 T-bird with the same engine and the plugs lasted me 90K+ miles. Even when I finally replaced the plugs, they looked pretty good still. Anyhow I was looking at the engine last week and saw the fuel rail right on top of the plug coils. I realize you have to remove the coil before getting to the plug. It appears to be a tight fit. I hope you are right that I won't have to remove the fuel rail to remove the coils. Many thanks, you guys are really great.
_________________________
2003 CV w HPP - 4.6/4R70W, 47K
1992 F250 - 351/5 speed man, 70K
1978 Chevy Caprice 2 door - 350 4bbl/T350, 260K <- all time favorite car!

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#800338 - 10/17/05 12:52 AM Re: how do you change the spark plugs?
texasvic Offline
I'm so fancy
Grand Poobah

Registered: 05/22/04
Posts: 13690
Loc: Katy, Tx
Quote:

I hope you are right that I won't have to remove the fuel rail to remove the coils.




We are.
_________________________
-Michael


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#2120900 - 08/20/10 04:50 PM Re: how do you change the spark plugs? [Re: texasvic]
CRTdave Offline
n00b

Registered: 07/10/10
Posts: 47
Loc: Eastern Shore Maryland
 Originally Posted By: texasvic
 Quote:
I hope you are right that I won't have to remove the fuel rail to remove the coils.


We are.


Damn Skippy you are.

I just did my plugs and it is no where near as hard as many make it out to be. Swivel socket is all you will need.
_________________________
1998 Lincoln Towncar Cartier 169,000 miles, burns just a touch of oil, and it was FREE.

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#2121444 - 08/21/10 12:27 PM Re: how do you change the spark plugs? [Re: CRTdave]
Mileaway Offline
Posting Addict

Registered: 10/06/05
Posts: 16817
Loc: Sacto. Calif.
then by all means...can u do mine?
We have a highway sign that says Ocean City Mrylnd 3000 miles on Int 80 in Sac.

how soon can I expect u?
_________________________
2000 P71 Interceptor orig. equip.near mint parchment int.& carpet 155,000 mi. 3.55 rear


Little Anthony: That's all the television there is.











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#2121503 - 08/21/10 01:33 PM Re: how do you change the spark plugs? [Re: Mileaway]
CRTdave Offline
n00b

Registered: 07/10/10
Posts: 47
Loc: Eastern Shore Maryland
Well, I am planing a road trip, but I won't be going past 700 miles. So, no real time soon.
_________________________
1998 Lincoln Towncar Cartier 169,000 miles, burns just a touch of oil, and it was FREE.

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#2121588 - 08/21/10 04:01 PM Re: how do you change the spark plugs? [Re: Mileaway]
Car_54 Offline
Member

Registered: 08/04/10
Posts: 161
Loc: SW,WA
Wow, that engine looks clean enough to eat off of.


Edited by Car_54 (08/21/10 04:02 PM)
_________________________
~DJ~

2001 P71, Wedgewood blue w/ denim interior ; 170K,
Ex WSP academy car.

1994 F150 4X4 5.0L / 5 speed ; 216K

1956 Ford Fairlane Town Sedan

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