6.7 ps knocking noise?
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Trailering
Joined: Oct 2021
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6.7 ps knocking noise?
Hi, I recently bought a 2018 6.7 ps with 98k on the clock, I’ve noticed some rather concerning noise, I’m not very familiar with these engines but do know they make more of a knocking sound that has engines, I have uploaded a video and would like someone’s opinion if I’m just paranoid or if something is wrong
Laughing Gas
Joined: Apr 2023
Posts: 928
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From: SE PA
Sounds like a 6.7 should.
Edit: I also noticed that the EGR has been deleted, the DPF and DEF systems may also have been removed. Did you know that this was deleted?
Edit: I also noticed that the EGR has been deleted, the DPF and DEF systems may also have been removed. Did you know that this was deleted?
Last edited by Strider250; Nov 1, 2024 at 03:58 PM. Reason: Added delete info.
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Trailering
Joined: Oct 2021
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Hotshot
Joined: Jul 2013
Posts: 14,301
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The thumping noise is from the intake…it echos valve train closings ….very slight in my opinion and you probally won’t even hear it when the engine is hot.
if it gets louder ..it could be rocker arms or rocker tips….very rare on a 6.7
if it gets louder ..it could be rocker arms or rocker tips….very rare on a 6.7
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