6.4L on 4th Crank Seal !!! -- Need Opinions - Diesel Forum - TheDieselStop.com
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6.4L Power Stroke Engine and Drivetrain Discussion of the 6.4L Power Stroke diesel engine and drivetrain in the 2008-Up Super Duty trucks. No gas engine discussion allowed except on transmissions and drivetrain that pertain to all models. Please confine discussion of topics in this forum to those items that are specific to the 6.4L Power Stroke engine.

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Old 01-12-2009, 04:22 PM   #1 (permalink)
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6.4L on 4th Crank Seal !!! -- Need Opinions

All,

I just bought a truck with 17K, which had an oil leak when I bought it from a dealer (not Ford). I had the dealer bring it to Ford and get it fixed, they replaced a crank seal. I took delivery, and within 50 miles it was leaking again. I assumed they never fixed the issue, but I was just told by the Ford service manager that was the 4th crank seal on that truck, and it was leaking again!

I told him that I wanted them to find the root cause of the seal blowing, and that another replacement would not be acceptable. He seemed to agree with me on the phone, but I wonder how much influence on this process does he actually have? My guess is there is bad casting in the rear main area, or a defect in the rear crank main bearing. Does anyone have any other guesses?

My questions are:

- Anyone else having a similar issue? I lost 1/2 quart in 100 miles.

- Anyone know how many recurrences of the same issue would trigger a "lemon" 6.4L? The service manager says they would replace the motor not the truck, which is fine with me, I am just trying to gauge what the odds would be that a replacement engine would actually happen at some point.

- How has Ford been in general in standing behind issues on these trucks?


I have had a 2000 7.3L, and a 2004 6.0L. The 7.3L was bulletproof, the 6.0L had issues, but they were tolerable. I would kill (metaphor) for a 7.3L with 100 miles on it right now....

thanks for the opinions. I have been a member here for years, this site has been an extremely valuable resource, thanks to all for contributing.

Blake
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Old 01-12-2009, 05:02 PM   #2 (permalink)
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i had my front cover replaced, after the same issue
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Old 01-13-2009, 11:46 PM   #3 (permalink)
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Update

Well, after stopping in at the dealer and seeing the entire cab suspended six feet over the chassis, the tech now says he thinks its a seal leak from a cover on the top rear of the engine. I guess I will have to wait and see if they can get the truck back together and see if it leaks....
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Old 01-14-2009, 10:36 AM   #4 (permalink)
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That makes sense actually. I remember the 7.3 used to get oil leaks in the valley on top of the engine , they would leak down the rear and look just like a rear main seal leak. Sounds like same thing here.
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Old 01-14-2009, 09:07 PM   #5 (permalink)
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Quote:
Originally Posted by kelso View Post
All,

"... but I wonder how much influence on this process does he actually have? "
Blake
I cannot speak for how much influence the service manager has. However, there is some element of influence you have. Check the lemon laws in your state. Most states give "x" number of days in shop and "y" number of attempts at fixing the same problem and it if exceeds the number the vehicle can be declared a lemon..Some states also put a cap on the max number of days in shop when there is a combination of several different problems. Therefore, Ford will buy it back from you or offer a replacement.
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Old 01-18-2009, 12:27 AM   #6 (permalink)
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3rd try ??!!

Ford dealer called on Friday, truck is done, test driven by the service manager and the mechanic, all is well. Stopped in today to pick it up, and found a diesel leaking off the drivers inner fender well, and transmission fluid on the engine/bellhousing mating surface running down both sides of the transmission. I didn't even get this thing out of the parking lot. So now they kept it again, its been in since the 3rd of January. At this point, how can I trust the mechanic working on it? Everyone makes mistakes, but this is getting a little out of hand, especially on my 50K truck......ARGH!
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