V-10 spark plugs
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From: Sundridge, North Ontario
V-10 spark plugs
I have a 1998 E Super Duty C class motorhome with the Triton 6.8L engine with 47,000 miles. The engine has developed a slight misfire and I would think the spark plugs are still the original factory plugs.
I have heard there are problems with removing the plugs.
Is there a proper procedure I can follow to remove and install new ones.
What should I watch for.
Is this a job I can do, I am quite mechanically inclined and have worked as a machinist for 40 years, built engines in my younger years and been around engines all my life.
Walt
I have heard there are problems with removing the plugs.
Is there a proper procedure I can follow to remove and install new ones.
What should I watch for.
Is this a job I can do, I am quite mechanically inclined and have worked as a machinist for 40 years, built engines in my younger years and been around engines all my life.
Walt
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Joined: Aug 2007
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From: Millersburg, OH
If you have a mis-fire it is probably a coil or coil boot that went bad. You can use a scanner that reads pending codes (Advanced Auto, etc will loan you one free) and it will tell you the cylinder that has a mis-fire. First thing to do is pull the coil out and look at the boot. Sometimes they dry-rot. You can replace just the boot for a few bucks. If the boot looks fine then the coil it's self is bad. Rock Auto (Auto Parts Fast at RockAuto) has a good price and they have super fast shipping on Motorcraft coils.
If you still want to do plugs while you are in there it really is nothing special. Let the engine cool completely! Do not changes plugs on a hot engine! Pull the coil off (remove 7mm bolt and wire harness), blow the plug hole out with compressed air, remove the plug, put anti-seize on new plug threads, replace plug and torque to 14 ft-lbs, fill coil boot with dielectric grease and replace the coil. Repeat 9 more times!
If you still want to do plugs while you are in there it really is nothing special. Let the engine cool completely! Do not changes plugs on a hot engine! Pull the coil off (remove 7mm bolt and wire harness), blow the plug hole out with compressed air, remove the plug, put anti-seize on new plug threads, replace plug and torque to 14 ft-lbs, fill coil boot with dielectric grease and replace the coil. Repeat 9 more times!
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Joined: Jul 2008
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From: La Plata, NM
The rest of the story is that depending on your access (I had an Excursion with lots of room and it still was tight) you have to lay on the motor to reach the back 2 or 3. I had ot remove the air filter and somem vacuum lines (much easier than working around them!). Took me a couple hours and a few frustration breaks, but all in all it was not that bad of an experience. But to echo the previous post check the boots, I had 116k on the factory plugs and they need repalcing, but so did a couple of the coil boots as well.
Good Luck,
Bill
Good Luck,
Bill
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From: Stephensville WI
If you do replace the plugs, install the Motorcraft plugs. The Triton engines are very picky about the plugs used. The Motorcraft Platinum plugs seem to work the best. Carefully blow out the area with compressed air before removing the plugs. Use a good thread penetrating lubricant, give it time to work.
Pay very close attention to the plug installation procedure. The 14 ft/lbs torque reading is not a misprint.
Pay very close attention to the plug installation procedure. The 14 ft/lbs torque reading is not a misprint.
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From: Sundridge, North Ontario
V-10 spark plugs
Here in Northern Ontario I could not find a place with a scanner that could do a scan for me. The place where I bought the plugs only had 8 plugs but got the rest in the following day.
Being a Econoline body sure limits the access to the plugs, it is tight at the best of times. I have some skinned knuckles but the job is done and the misfire is gone.
All the boots looked real good and still quite pliable, there was no noticeable hardening on them.
All the plugs seemed the same colour, one had a bit of a deposit on it, they all came out quite easy. I did blow out the hole before loosening them and put some penetrating oil down and then cracked it, left it set then took them out. Most after a couple of turns came out by hand. Put antiseize on them and torqued them to 168 in/lbs.
I had to use Champion 3401 plugs, they are a platinum plug, thats what was available.
There has been only 47,000 miles put on it in 10 years, most of those before I owned it, we generally put 2-3,000 miles on a year.
So these should last for some time.
Thank you for the replies, I greatly appreciate them.
Walt
Being a Econoline body sure limits the access to the plugs, it is tight at the best of times. I have some skinned knuckles but the job is done and the misfire is gone.
All the boots looked real good and still quite pliable, there was no noticeable hardening on them.
All the plugs seemed the same colour, one had a bit of a deposit on it, they all came out quite easy. I did blow out the hole before loosening them and put some penetrating oil down and then cracked it, left it set then took them out. Most after a couple of turns came out by hand. Put antiseize on them and torqued them to 168 in/lbs.
I had to use Champion 3401 plugs, they are a platinum plug, thats what was available.
There has been only 47,000 miles put on it in 10 years, most of those before I owned it, we generally put 2-3,000 miles on a year.
So these should last for some time.
Thank you for the replies, I greatly appreciate them.
Walt
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