Spark Plugs
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Junior Member
Joined: Aug 2000
Posts: 3
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From: Ohio
Spark Plugs
I have recently traded my 1993 ranger for a 1998 F 150 with a 5.4 L.....I want to do my own maint......I have changed the oil and would like to change my spark plugs if I could only find them.....HELP
Senior Member
Joined: May 2000
Posts: 368
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From: Ypsi, MI USA
I have a '99 and I know the feeling. I haven't changed mine yet, but I understand they are under a rail. So there aren't really plug wires. I think....
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'99 F150 SC Lariat 4x4 Deep Wedgewood Blue with Harvest Gold 2-Tone, Medium Prairie Tan Leather (getting seat repaired), all the factory options (minus captain's chairs, 6 disc cd changer, ford tonnuea and push button 4wd) Polar Bear Brush Guard, Ford Factory Steb Bars, Extang Tonnuea Cover, Duracoat Liner with Rubber Mat, Flowmaster 50 series, Superchip, K&N Filter, Airbox Mod and Silencer Removed, 2 Rockford Fosgate 8"'s and a 250 watts RF amp
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'99 F150 SC Lariat 4x4 Deep Wedgewood Blue with Harvest Gold 2-Tone, Medium Prairie Tan Leather (getting seat repaired), all the factory options (minus captain's chairs, 6 disc cd changer, ford tonnuea and push button 4wd) Polar Bear Brush Guard, Ford Factory Steb Bars, Extang Tonnuea Cover, Duracoat Liner with Rubber Mat, Flowmaster 50 series, Superchip, K&N Filter, Airbox Mod and Silencer Removed, 2 Rockford Fosgate 8"'s and a 250 watts RF amp
Former Sponsor
Joined: Mar 1998
Posts: 13,385
Likes: 4
From: Virginia
Hi FordE2,
Your 5.4 motor uses a COP (coil over plug) setup, so you don't have traditional spark plug wires. The spark plugs themselves are located in a recess in the cam covers, like an old Mopar Hemi engine. So they reside basically in a little "well" in the cam covers. You will see a small "hole" in the valve cover ("valve cover" is not the exact correct term in this overhead cam engine, but that will suffice) for each spark plug, and down in there is where the spark plug resides.
Hope that helps,
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Mike Troyer
Performance Products, Inc.
National Distributor of Superchips
(540) 862-9515
Email: mtroyer@compuserve.com
Performance Products F150Online Superchip ordering system: F150Online Superchip Ordering System
First National F-150 Online Rally Event Organizer
Your 5.4 motor uses a COP (coil over plug) setup, so you don't have traditional spark plug wires. The spark plugs themselves are located in a recess in the cam covers, like an old Mopar Hemi engine. So they reside basically in a little "well" in the cam covers. You will see a small "hole" in the valve cover ("valve cover" is not the exact correct term in this overhead cam engine, but that will suffice) for each spark plug, and down in there is where the spark plug resides.
Hope that helps,
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Mike Troyer
Performance Products, Inc.
National Distributor of Superchips
(540) 862-9515
Email: mtroyer@compuserve.com
Performance Products F150Online Superchip ordering system: F150Online Superchip Ordering System
First National F-150 Online Rally Event Organizer
Senior Member
Joined: Jul 2000
Posts: 133
Likes: 0
From: Galveston, TX
!!Are you serious?! Even though that sounds really cool: Hemi engine (he he), that sounds like a pain to swap the plugs for some aftermarkets. Are they covered or concealed by something, like a specific cap for each plug/coil?... cuz I cain't see nuttin.
I know the owners manual told us each plug now has their own coil... And I'm stoaked n all, but damn. I'd like to see some of these phenomenons.
I know the owners manual told us each plug now has their own coil... And I'm stoaked n all, but damn. I'd like to see some of these phenomenons.
Senior Member
Joined: Jun 1999
Posts: 329
Likes: 0
From: Cary, NC
They're not as hard to change as everyone makes it sound. Change them when the intake is off and just before you install the blower! 
I'm sorry, I couldn't help myself. 
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98 F-150 XLT 4X4 ORP Super Cab Short Bed, 4.6, Auto. Magnacharger supercharger. Superchip, Gibson sing. cat-back, 80/100w German head lamps. Warn HS9500i winch with semi hidden mount. Wrangler dual battery kit with red & yellow top Optima batteries. Torsion bars cranked up 2 turns. Needs one more door.
I'm sorry, I couldn't help myself. ------------------
98 F-150 XLT 4X4 ORP Super Cab Short Bed, 4.6, Auto. Magnacharger supercharger. Superchip, Gibson sing. cat-back, 80/100w German head lamps. Warn HS9500i winch with semi hidden mount. Wrangler dual battery kit with red & yellow top Optima batteries. Torsion bars cranked up 2 turns. Needs one more door.
Senior Member
Joined: Nov 1999
Posts: 1,177
Likes: 0
From: Carolina, Puerto Rico, USA
FordE2
If you are interested in spark plugs, I have an extra set of new in the box SplitFires for the 98 5.4.
jmogroup@bigplanet.com
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1998 F150 4x4 SuperCab, Lariat Flareside 5.4L, 4 Speed Auto., ORP, Tow Package, 3.55 LS in oxford white two tone, K&N Filtercharger, Stepshield door sill protectors, Performance Accesories 3" body lift and Lift Lips.
If you are interested in spark plugs, I have an extra set of new in the box SplitFires for the 98 5.4.
jmogroup@bigplanet.com
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1998 F150 4x4 SuperCab, Lariat Flareside 5.4L, 4 Speed Auto., ORP, Tow Package, 3.55 LS in oxford white two tone, K&N Filtercharger, Stepshield door sill protectors, Performance Accesories 3" body lift and Lift Lips.