2012 6.7 Random Clanking Engine Bay

indianaboost · Jul 8, 2018

Have noticed a random clank/clack/tick sound after truck is warmed up. I dont remember it making this noise before I changed the oil and fuel filter, maybe I wasnt paying as much attention. You can hear what I am talking about behind the normal sounds of your typical diesel engine running especially when my pusher fan clicks off. I though it might be coming from ac compressor clutch but it continues making the sound when AC is off. I did check valve lash and adjusted a few cylinders but nothing was out of the ordinary. Sounds like something is rattling around maybe in the pan? There was a thread with the same sound on an early 6.7 on this forum but the thread is closed and nothing was ever sorted out.

Oil just changed with Mopar filter and 15w40 Valvoline premium blue
Fuel filter is Fleetguard FS53000

https://drive.google.com/open?id=12PS6sO8f4m0YWuBPI26VdOdbqBmuEHSs

indianaboost · Jul 8, 2018

This video is the same noise but once again no definitive answer on what it was. Most just seem to leave it be and someone claimed to fix it with a lift pump.

Bigredcherokee · Jul 8, 2018

indianaboost said:
This video is the same noise but once again no definitive answer on what it was. Most just seem to leave it be and someone claimed to fix it with a lift pump.

https://www.youtube.com/watch?v=I1feZZhKfK8

Sounds like a lifter needs adjusting.

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fitz011 · Jul 15, 2018

Couldn't hear much beyond normal to me...

Quint · Jul 15, 2018

I found that both my 12 and then 14 had lifters that were mostly at the upper most end of the spec (pretty loose), that and they varied from one to the other. Tightening them up and making them all the same quieted the racket down some on both trucks.

indianaboost · Jul 18, 2018

I am definitely going to open it back up and check them again, just waiting on some time to do it.

2012 6.7 Random Clanking Engine Bay

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