Throwing Spark Plugs
Thread Starter
|
Senior User
Joined: Apr 2007
Posts: 143
Likes: 0
Throwing Spark Plugs
I am still waiting for my 07 SCREW to get here but I have a question on the 5.4 V-8. I have a 99 F-350 with a V-10. It threw a spark plug @ 95,000 miles. I heard that this was more common on the V-8. Has this issue been fixed? I replaced the heads myself and don't want to have to do it again. I must have done it right since I now have over 250,000 on the V-10.
Also how do you get the information under the line describing what you drive?
Thanks
Also how do you get the information under the line describing what you drive?
Thanks
New User
Joined: Sep 2002
Posts: 15
Likes: 0
From: NOYB
Originally Posted by thechief96
I am still waiting for my 07 SCREW to get here but I have a question on the 5.4 V-8. I have a 99 F-350 with a V-10. It threw a spark plug @ 95,000 miles. I heard that this was more common on the V-8. Has this issue been fixed? I replaced the heads myself and don't want to have to do it again. I must have done it right since I now have over 250,000 on the V-10.
Also how do you get the information under the line describing what you drive?
Thanks
Also how do you get the information under the line describing what you drive?
Thanks
Trending Topics
Fleet Mechanic
Joined: Nov 2000
Posts: 1,713
Likes: 2
From: In my House
Not sure when Ford starting using the 3V 5.4 in the Superduty, but in 04 when they cam out with the new body style F150, this was the first year for the F150. The older 5.4 2v along with the 6.8, were the ones spitting plugs out. The new 5.4 3V, you Can't get them out without them breaking off usually. A lot of guys have had very good success with changing them around 30k. I would not wait until the 100k mark.
Rich
Rich
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
10 Most Surprising 2026 Ford Truck Features!
Joe Kucinski
Top 10 Ford Trucks Coming to Mecum Indy 2026
Brett Foote
5 Best / 5 Worst Ford Truck Wheels of All Time
Joe Kucinski
MMNC (SS)(Ret)
Joined: Mar 2004
Posts: 11,602
Likes: 148
From: SE Georgia
Originally Posted by tonygauvin
I will be changing the plugs on my 2006 F150 Larait @ the 10K service interval just for safe measure, the truck has 5K on it now
but yeah, the 5.4 2v and the 4.6 2v had issues with insufficient threads on the spark plugs. this could lead to the plug threads stripping and the spark plug "ejecting" from the cylinder.
New User
Joined: Sep 2002
Posts: 15
Likes: 0
From: NOYB
Originally Posted by tylus
why. not to step on toes, but why risk breaking your plugs when they clearly don't need to be done. I'd say 50,000 miles at the earliest unless you start to exhibit a rough idle and decreased MPG due to bad plugs
but yeah, the 5.4 2v and the 4.6 2v had issues with insufficient threads on the spark plugs. this could lead to the plug threads stripping and the spark plug "ejecting" from the cylinder.
but yeah, the 5.4 2v and the 4.6 2v had issues with insufficient threads on the spark plugs. this could lead to the plug threads stripping and the spark plug "ejecting" from the cylinder.
MMNC (SS)(Ret)
Joined: Mar 2004
Posts: 11,602
Likes: 148
From: SE Georgia
Originally Posted by tonygauvin
I have several reasons. The first is that when the spark plug problem happened on 1999 V10 it was 5K out of warranty and cost me $1500 to repair (new heads). This time I will have the ford service tech work on my removing plugs IAW TSB # 06512 which tells them to put anti-seize on the new plugs threads. Funny thing about Ford is even when they know they created the problem they will only take care of it if it is under warranty. I figure I'll send $100 now instead of $1500 later. Besides there are better plugs than the factory autolites so I was as well put in some better plugs now. Changing plugs @ 50K means it is out of warranty, I have a 2006. (see below for both trucks)
YOU HAVE TO PAY FOR THE EXTRACTION
If you're lucky, that special tool will work, but most likely the head will have to be pulled. I'd make very sure of all the costs, and potential costs before touching those plugs. I'm worried about the breakage also, but I'll be doing it at the 50k mark myself. I'm not in the mood to pay thousands for a repair that isn't needed just yet to prevent a plug from maybe getting stuck. just my opinion though
New User
Joined: Sep 2002
Posts: 15
Likes: 0
From: NOYB
Originally Posted by tylus
I don't know if they told you, but if the plugs break
YOU HAVE TO PAY FOR THE EXTRACTION
If you're lucky, that special tool will work, but most likely the head will have to be pulled. I'd make very sure of all the costs, and potential costs before touching those plugs. I'm worried about the breakage also, but I'll be doing it at the 50k mark myself. I'm not in the mood to pay thousands for a repair that isn't needed just yet to prevent a plug from maybe getting stuck. just my opinion though
YOU HAVE TO PAY FOR THE EXTRACTION
If you're lucky, that special tool will work, but most likely the head will have to be pulled. I'd make very sure of all the costs, and potential costs before touching those plugs. I'm worried about the breakage also, but I'll be doing it at the 50k mark myself. I'm not in the mood to pay thousands for a repair that isn't needed just yet to prevent a plug from maybe getting stuck. just my opinion though
Not according the Maine *where I live* state consumer law. I have already have this covered with the dealer.
Thread
Thread Starter
Forum
Replies
Last Post
GoodandPLENTY
1999 - 2016 Super Duty
11
May 27, 2016 12:17 AM
WorldCommander
1968-Present E-Series Van/Cutaway/Chassis
4
Jan 13, 2016 01:51 PM
