6.7 Clank/ Rev

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Feb 18, 2022 | 10:42 AM

bdanaldson1

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6.7 Clank/ Rev

2012 6.7 diesel, 50 K miles. I was driving down the and got about a mile from my home when I heard a clank from the engine. I turned around and drove back home. I turned it off. Later that day I cranked it to see if it was still there and it still had the noise and approximately a minute later it started revving I would guess 3500-4000 rpm. I immediately turned it off. Again later I tried it again and it did the same thing about a minute into running it would “run away”.

This is a very noticeable sound. I’m thinking of running it yet again but taking a mechanic scope and listening to locate the sound, but does anyone have any idea what this could be? It is such a low mileage truck it’s crazy!

Side note of frustration lol: it sucks paying so much for these diesels, pay so much for the fuel to put in them, so much for maintenance, and then they break.

Feb 18, 2022 | 11:07 AM

djousma

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From: West Michigan

i personally would not run it anymore if there is a possibility of some sort of mechanical failure in progress. Could be the difference between a $5k repair vs a $10K engine replacement. You could have a failed injector that is spewing fuel into the cylinder causing the run away, that eventually would cause a hydrolock. I'm not a mechanic, but if it were mine, I'd probably get it towed to one for diagnosis making it clear to them not run or run very long.

Feb 18, 2022 | 06:13 PM

senix

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From: Frederick, MD

money well spent to scan for codes, you don't indicate any but worth a scan.

I too would check all your fluids and see what that presents.

A tow is probably the best idea.