Triton V10 reliability

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Joined
Jul 23, 2020
Messages
11
I'm thinking of buying a used Class C and many of the ones I've seen have the Triton V10. I understand some early ones (before 2002) had a tendency to blow out their spark plugs, but this may have been partly due to over torque on installation. Does anyone know how likely this is to be a problem and what to look for on a used one? Also, what is typical for mileage and do the Airtabs make any difference in economy?
 
Joined
Nov 3, 2019
Messages
752
Location
Florida
RV Year
2018
RV Make
Newmar
RV Model
CanyonStar
RV Length
39' 11"
TOW/TOAD
Demco KarKaddy 460SS and VW Passat
Fulltimer
No
unfortunately Ford used only a few threads to secure the plugs in the early modular engines, including the 6.8L V10. Either poor maintenance or heat cycles loosened the plugs and consequently they became a projectile.
There is a fix that does not require the head to be removed. Can be accomplished in about 15 minutes per plug on average.
It appears that the rear plugs near the firewall may be more of a challenge.

 
Joined
Dec 25, 2019
Messages
1,026
Miealage on my 2016 V10 engine on a 30 ft C was 8.5-9.5 mpg, which was on the high end. It had the aerodynamic cab. Uussually figure 6-10 mpg. I don't have ant experience with the tabs.
 
Joined
Jul 23, 2020
Messages
11
unfortunately Ford used only a few threads to secure the plugs in the early modular engines, including the 6.8L V10. Either poor maintenance or heat cycles loosened the plugs and consequently they became a projectile.
There is a fix that does not require the head to be removed. Can be accomplished in about 15 minutes per plug on average.
It appears that the rear plugs near the firewall may be more of a challenge.

that’s a neat little repair kit. my bet is you could do that repair on the road with a small compressor and angle drill plus basic tools. it would be easier at home tho.
 
Joined
Jul 23, 2020
Messages
11
Miealage on my 2016 V10 engine on a 30 ft C was 8.5-9.5 mpg, which was on the high end. It had the aerodynamic cab. Uussually figure 6-10 mpg. I don't have ant experience with the tabs.
thanks for that response. we rented a 2019 and probably did close to the same. i was also wondering whether the older tritons would get about the same as i have seen some around 20 years old.
 
Joined
Dec 25, 2019
Messages
1,026
Anything that old would probably need a lot of work from the ground up. Unless you must, I would not trust anything that old.
 
Joined
Oct 12, 2020
Messages
32
Location
Richmond VA
RV Year
2012
RV Make
forest river
RV Model
sunseeker
RV Length
29'9"
Fulltimer
No
My 2012 triton v10, 43,000 miles, gets 8.1 mpg on fairly flat ground. And that's with the wife driving 40% of the time.
 
Joined
Jul 23, 2020
Messages
11
Anything that old would probably need a lot of work from the ground up. Unless you must, I would not trust anything that old.
I am willing and able to do the work, either drive train or interior rehab. I got a bit scared though driving the rental that had maybe 20K miles on it. Going up a hill, the transmission overheated or something and I had to give it a 15 minute rest. Then again, the dealership had left the fluid a bit low so that could have been an issue.
 
Joined
Jan 28, 2020
Messages
429
Location
Cypress Inn, TN
RV Year
2011
RV Make
Thor
RV Model
Hurricane
RV Length
32ft
TOW/TOAD
2018 Nissan Rogue
On the earlier mod V10’s there was a design issue on the heads not having enough depth for the spark plugs. This allowed a few threads of the plug th be inside the combustion chamber. With use carbon would build up on the the threads and when you tried to remove the plug the carbon would damage the head. One way to get around that was to loosen the plug a 1/4 turn then pour a carbon cleaner around the plug and let sit, then repeat to loosen the carbon, then remove the plug.

they have since then fix the head on the newer models and that is no longer a problem.
 
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