6.7 knock
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8th Gear
Joined: Feb 2023
Posts: 8
Likes: 1
From: Tracy ca
6.7 knock
Hi everyone, I have a 2013 f350 6.7 diesel, recently had the DEF repaired and also the catastrophic fuel system replaced, and now I have a intermittent knock on acceleration, I don’t know what is the cause or if it’s major damage, I’ll upload a video, if anyone knows possible issues. Much appreciated. Thx!
Last edited by Fergusonbri; Feb 23, 2023 at 12:55 AM. Reason: Add video
Logistics Pro
Joined: May 2011
Posts: 4,832
Likes: 668
From: Maine
Yes, it was very loud. Was this the same shop that replaced the fuel system?
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8th Gear
Joined: Feb 2023
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From: Tracy ca
Yes they did all the work, but Ford worked on the computer. I’m just hoping at this point it’s not a rod knock or internal damage
Last edited by Fergusonbri; Feb 23, 2023 at 09:58 AM. Reason: Add video
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8th Gear
Joined: Feb 2023
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From: Tracy ca
Supposedly the injectors are part of the kit, and I’m not sure if the injector test is under load
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8th Gear
Joined: Feb 2023
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From: Tracy ca
2nd opinion
I got a second opinion from another diesel mechanic and he said the same thing. Injector or multiple
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8th Gear
Joined: Feb 2023
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From: Tracy ca
Not sure what has been done, besides the complete fuel system being replaced and MAF sensor being replaced twice, they tested the injectors and they were good, but idk if that was under a load, it’s scheduled to go to Ford for more testing, if it’s anything related to the fuel system, then I feel like it’s on them to get it right
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8th Gear
Joined: Feb 2023
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From: Tracy ca
Shelbyhauler
247k is about exactly the same mileage as mine, but idk if you heard the video knocking, but it’s never done that before changing the fuel system and I believe will cause more damage if not corrected, it happens more when warmed up, my biggest concern is that it’s not a rod or bearings
247k is about exactly the same mileage as mine, but idk if you heard the video knocking, but it’s never done that before changing the fuel system and I believe will cause more damage if not corrected, it happens more when warmed up, my biggest concern is that it’s not a rod or bearings
Laughing Gas
Joined: Dec 2017
Posts: 1,002
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From: Miami, Fl
Shelbyhauler
247k is about exactly the same mileage as mine, but idk if you heard the video knocking, but it’s never done that before changing the fuel system and I believe will cause more damage if not corrected, it happens more when warmed up, my biggest concern is that it’s not a rod or bearings
247k is about exactly the same mileage as mine, but idk if you heard the video knocking, but it’s never done that before changing the fuel system and I believe will cause more damage if not corrected, it happens more when warmed up, my biggest concern is that it’s not a rod or bearings
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