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Old 01-06-2022, 03:58 PM   #1
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Spark plugs

Hi all! Hope everyone is starting out with a good new year.

Question. Iím going to replace my plugs on my 2015 Thor. Picking up the plugs at Napa they informed me I donít have wires but instead have spark plug ďbootsĒ does this sound correct?

Also does anyone know the torque specs for tightening the plugs?

Thank you!

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Old 01-06-2022, 04:12 PM   #2
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Are you replacing the plugs as a routine maintenance thing or is there an issue? Plugs usually last a pretty long time just make sure they are gaped and burning cleanly (no oily residue). One of my vehicles continues running perfect after 160,000 miles on original plugs. I typically seat the plugs and torque by feel since there is a crush washer on the plugs. The internet may provide a torque spec for your chassis if your owners manual doesn't. I suspect that by "boots" he means the plugs recess into the heads or valve covers and the boots seat and seal around the plugs against the opening to access the plugs.
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Old 01-06-2022, 04:57 PM   #3
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What engine? You may have coil over packs, that sit directly over the plug. Unless you are experiencing misses, or have exceeded 100K miles, you should leave the plugs alone. As stated above, they are good for at least that long.
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Old 01-06-2022, 05:41 PM   #4
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Originally Posted by HarryS View Post
What engine? You may have coil over packs, that sit directly over the plug. Unless you are experiencing misses, or have exceeded 100K miles, you should leave the plugs alone. As stated above, they are good for at least that long.
Exactly.
You're asking very basic questions which leads to us believing you have very basic skills and information based on vehicle experiences from 39 years ago.

Strip one of those holes and experience 4 months down time and $4,000+ labor.

Chances of stripping a hole?
The same as 15 year old boys against a national womens soccer team.
15:1 against the boys, yet the boys won 15 to 0.

No one thought the boys could beat them.
No one thinks themselves a mediocre mechanic.
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Old 01-07-2022, 03:30 AM   #5
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Probable has individual coil pack instead of wires
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Old 01-07-2022, 06:01 PM   #6
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Originally Posted by VanCampFarm View Post
Hi all! Hope everyone is starting out with a good new year.

Question. Iím going to replace my plugs on my 2015 Thor. Picking up the plugs at Napa they informed me I donít have wires but instead have spark plug ďbootsĒ does this sound correct?

Also does anyone know the torque specs for tightening the plugs?

Thank you!
Filters, oil and spark plugs will ALWAYS bring out the...
1. IF YOU DON'T GO BY THE BOOK blah.....
2. MY WAY or your a blah...
3. what ever's on sale

Here's a link to your owners manual, IF YOU HAVE A FORD chassis.
Looks like Ford recomends 97500 for "our" V10 in a E450

Finding the torque is taking A LOT of searching, haven't found it yet probably because the V10 has a nasty reputation for spitting the plugs out with the threads

Good luck with your DIY and "please" update if/when you find the torque
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Old 01-07-2022, 06:27 PM   #7
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The other thing I have seen multiple times with Ford engines (at least here in snow country) is cracked exhaust manifolds with blown out gaskets which is a huge (or expensive) PITA to fix and change.
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Old 01-07-2022, 06:39 PM   #8
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I have had diesels since back in the day of the 460 engines. Only tried two v10's and went right back to diesels, had several trucks at a time so not that many years

How-ever both v10's had coil pack failures long before the plugs were bad

Given those engines complexity a trip to the dealer is in order
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Old 01-07-2022, 06:42 PM   #9
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Originally Posted by Edensob View Post
The other thing I have seen multiple times with Ford engines (at least here in snow country) is cracked exhaust manifolds with blown out gaskets which is a huge (or expensive) PITA to fix and change.
I bought exhaust wrap for the RV.
I am hesitant to install it.
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Old 01-07-2022, 06:49 PM   #10
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Typical for the posters on the Thor Forum. Nothing but insults and off topic references. If you are at the recommended mileage on the plugs, you can go ahead and change them but to answer your question each plug has a coil pack so there are no really plug wires to change.
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Old 01-07-2022, 07:10 PM   #11
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Poster didn't mention milage, just going to change them

Coil packs are suspect and a good tester or technician would sure steer him the right direction

For the poster it isn't that hard of a job to do if your going to take it on
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Old 01-07-2022, 09:05 PM   #12
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Quote:
Originally Posted by abjbrtd View Post
Filters, oil and spark plugs will ALWAYS bring out the...
1. IF YOU DON'T GO BY THE BOOK blah.....
2. MY WAY or your a blah...
3. what ever's on sale

Here's a link to your owners manual, IF YOU HAVE A FORD chassis.
Looks like Ford recomends 97500 for "our" V10 in a E450

Finding the torque is taking A LOT of searching, haven't found it yet probably because the V10 has a nasty reputation for spitting the plugs out with the threads

Good luck with your DIY and "please" update if/when you find the torque
Torque on the V-10 after 2004 is 25 ft lbs. The 'newer' V-10's, after about 2004 have modified heads, which removes the propensity of "spitting the plugs out".
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Old 01-08-2022, 04:19 PM   #13
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Originally Posted by Lt Keefer View Post
Typical for the posters on the Thor Forum. Nothing but insults and off topic references. If you are at the recommended mileage on the plugs, you can go ahead and change them but to answer your question each plug has a coil pack so there are no really plug wires to change.

Thank you sir!
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Old 01-08-2022, 04:23 PM   #14
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Originally Posted by ducksface View Post
Exactly.
You're asking very basic questions which leads to us believing you have very basic skills and information based on vehicle experiences from 39 years ago.

Strip one of those holes and experience 4 months down time and $4,000+ labor.

Chances of stripping a hole?
The same as 15 year old boys against a national womens soccer team.
15:1 against the boys, yet the boys won 15 to 0.

No one thought the boys could beat them.
No one thinks themselves a mediocre mechanic.
Weíll Face of Duck, im an industrial mechanic by trade. I work on extremely tight tolerance, high speed heavy machinery. Iím just asking a forum of respected minded individuals a question since Iím working and not home to look through my manual while also looking for previous experience from someone who may have done the trick. Iíve heard in these Ford engines that the plugs are barley biting by a few threads, therefore tend to strip out and blow out easier. Hence, the reason for my question and preventative maintenance on my coach.

I suggest you practice some humility, or tone down the keyboard warrior jabs till you actually open your mouth in public by mistake.
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Old 01-08-2022, 04:24 PM   #15
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Originally Posted by HarryS View Post
Torque on the V-10 after 2004 is 25 ft lbs. The 'newer' V-10's, after about 2004 have modified heads, which removes the propensity of "spitting the plugs out".
Thank you! A gentleman at work told me he thought they were around 25 as well. Appreciate your response sir.
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Old 01-08-2022, 04:25 PM   #16
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Originally Posted by lwmcguire View Post
Poster didn't mention milage, just going to change them

Coil packs are suspect and a good tester or technician would sure steer him the right direction

For the poster it isn't that hard of a job to do if your going to take it on
Iím at 70,000 on her right now. Iím pretty sure they havenít been changed. Iím sorry that was definitely a big detail to leave out
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Old 01-08-2022, 04:26 PM   #17
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Quote:
Originally Posted by abjbrtd View Post
Filters, oil and spark plugs will ALWAYS bring out the...
1. IF YOU DON'T GO BY THE BOOK blah.....
2. MY WAY or your a blah...
3. what ever's on sale

Here's a link to your owners manual, IF YOU HAVE A FORD chassis.
Looks like Ford recomends 97500 for "our" V10 in a E450

Finding the torque is taking A LOT of searching, haven't found it yet probably because the V10 has a nasty reputation for spitting the plugs out with the threads

Good luck with your DIY and "please" update if/when you find the torque
Thank you very much. I appreciate it!
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Old 01-08-2022, 04:48 PM   #18
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Quote:
Originally Posted by VanCampFarm View Post
Weíll Face of Duck, im an industrial mechanic by trade. I work on extremely tight tolerance, high speed heavy machinery. Iím just asking a forum of respected minded individuals a question since Iím working and not home to look through my manual while also looking for previous experience from someone who may have done the trick. Iíve heard in these Ford engines that the plugs are barley biting by a few threads, therefore tend to strip out and blow out easier. Hence, the reason for my question and preventative maintenance on my coach.

I suggest you practice some humility, or tone down the keyboard warrior jabs till you actually open your mouth in public by mistake.
Thanks for quoting the "" I don't see his post. WOW typical for the
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Old 01-08-2022, 04:57 PM   #19
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Originally Posted by VanCampFarm View Post
Iím at 70,000 on her right now. Iím pretty sure they havenít been changed. Iím sorry that was definitely a big detail to leave out
We're almost at 70k, this thread is suddenly provided some good info.

I do all my maintenance at 2/3 miles what the "book" says, been dreading it, my 74 yr old body is going to be sore for 3 days instead of the usual 1 or 2
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Old 01-08-2022, 06:43 PM   #20
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Originally Posted by abjbrtd View Post
We're almost at 70k, this thread is suddenly provided some good info.

I do all my maintenance at 2/3 miles what the "book" says, been dreading it, my 74 yr old body is going to be sore for 3 days instead of the usual 1 or 2

Haha I understand!

Iíve always done my own maintenance and for the most part do the same. Iím thinking better get to it before it get to you when it comes to potential problems.

A gentleman I spoke to in the subject told me he has done this particular job on his gasser A-class before and said you can do it from inside the cab with the cover off but is easier to go in from underneath, just turn the tires for room and do one side at a time. I havenít checked it out yet but plan to do this job in the next week or so. Iíll make sure to post the results/problems along the way 👍🏽
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