Major engine failures
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Former Vendor
Joined: Jan 2014
Posts: 240
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From: Asheville, NC
Major engine failures
I am just starting to look into what type of major engine failures that people are seeing in the 6.7. Since most trucks are still under warranty, I haven't done any research on the 6.7 and would like to know because some of the high mileage trucks (out of warranty) will eventually need an engine.
I'm starting to do my research so we an start buying cores and getting ready. I know there are people who have never hadf a problem or had small problems, I don't need that info. Please provide any input that you can on major failures.
Thanks, Rob
I'm starting to do my research so we an start buying cores and getting ready. I know there are people who have never hadf a problem or had small problems, I don't need that info. Please provide any input that you can on major failures.
Thanks, Rob
Lead Driver
Joined: Feb 2011
Posts: 6,676
Likes: 913
From: Milford, MI
Only thing that stands out to me is we've had a few reports of broken/dropped exhaust valves on 2010 production/job 1 trucks. Still quite rare though. Most of your business with these I think is just going to be old fashion wearing out. But I'm not sure at what mileage to even expect that......lol.
Lead Driver
Joined: Jan 2010
Posts: 6,600
Likes: 84
There are only a handful of members here who have lost their 6.7L's related to what Chad mentioned and that's about it for engine issues.
I think the number of trucks over 100,000 miles here is still a low percentage.
I think there is a higher number of turbo issues and that's relatively low, too.
Hypothetically, if you were to create a business just repairing 6.7L's as they are currently, I don't think the business would survive.
These engines simply aren't failing in large amounts.
I think the number of trucks over 100,000 miles here is still a low percentage.
I think there is a higher number of turbo issues and that's relatively low, too.
Hypothetically, if you were to create a business just repairing 6.7L's as they are currently, I don't think the business would survive.
These engines simply aren't failing in large amounts.
Fleet Mechanic
Joined: Aug 2013
Posts: 1,313
Likes: 19
From: Louisiana
I don't believe there are any "major" engine failures, with the thing that occurs the most is the radiator leaking being the most prevalent issue. There is one guy out there with 500k on his 6.7 with no rebuilds or anything, just regular maintenance.
Post Fiend
Joined: Jan 2009
Posts: 6,521
Likes: 11
From: Greenwood, SC
If I were to inventory parts to be ready for engine service it would be limited to
1. Complete fuel system
2. Complete exhaust system (def pump and DPF sensors)
3. Turbo
4. Water pump and radiator
One of those 4 situations may come into your shop every 6 weeks if you live in a metro area with 100,000 trucks in/around. Odds are very low.
1. Complete fuel system
2. Complete exhaust system (def pump and DPF sensors)
3. Turbo
4. Water pump and radiator
One of those 4 situations may come into your shop every 6 weeks if you live in a metro area with 100,000 trucks in/around. Odds are very low.
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Former Vendor
Joined: Jan 2014
Posts: 240
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From: Asheville, NC
Thanks, guys! It's good to hear that the 6.7 is solid. We don't usually get into remanufacturing an engine big time until the 5 year warranty is up but there will be some calls for it in high mileage engines before then so I'm looking into it now. It's good to hear that the failures aren't catstrophic, ruining blocks like the 6.4.
As long as they can be remanned, there will be a lot of business rebuilding them eventually. After all, Ford sells more trucks than anybody else!
We don't do anything with fuel system and other things that were mentioned, we build short and long blocks. Please keep the comments coming if you have anything different to add.
As long as they can be remanned, there will be a lot of business rebuilding them eventually. After all, Ford sells more trucks than anybody else!
We don't do anything with fuel system and other things that were mentioned, we build short and long blocks. Please keep the comments coming if you have anything different to add.
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Super Moderator
Joined: Aug 2003
Posts: 25,479
Likes: 742
From: Isanti, MN
I think that's true some of the time, but often it's just scarring of the cylinder bore. The question then becomes how frequently the failure causes damage that can't be repaired by traditional methods. Rob, can you guys typically rebuild an engine that's dropped a valve?
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Former Vendor
Joined: Jan 2014
Posts: 240
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From: Asheville, NC
We reman engines all the time that drop a valve. Most of the time with a dropped valve the cylinder needs to be bored and re-assembled with larger pistons. There are times when the cylinder is scarred so badly that it needs to be sleeved. We don't sleeve any 6.0's because we've got plenty of good cores but on the 6.4 good cores are rare so we have sleeved some of those.
A lot of times with a dropped valve the head is destroyed but we do get heads that can be reworked a good portion of the time.
A lot of times with a dropped valve the head is destroyed but we do get heads that can be reworked a good portion of the time.
Thread Starter
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Former Vendor
Joined: Jan 2014
Posts: 240
Likes: 6
From: Asheville, NC
We reman engines all the time that drop a valve. Most of the time with a dropped valve the cylinder needs to be bored and re-assembled with larger pistons. There are times when the cylinder is scarred so badly that it needs to be sleeved. We don't sleeve any 6.0's because we've got plenty of good cores but on the 6.4 good cores are rare so we have sleeved some of those.
A lot of times with a dropped valve the head is destroyed but we do get heads that can be reworked a good portion of the time.
A lot of times with a dropped valve the head is destroyed but we do get heads that can be reworked a good portion of the time.
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