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Duramax Fifth Generation: 2011-2016 (LML) Discuss the fifth generation (2011-2016) of the 6.6L Duramax diesel engine & associated components. Engine related discussion ONLY. is the premier Duramax Diesel Forum on the internet. Registered Users do not see the above ads.
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Old 10-21-2018, 03:54 PM   #1 (permalink)
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Knocking sound at low rpm while under load

So last February my cp4 grenaded and I had to replace everything. I went with an exergy sportsman pump new Bosch injectors all new fuel lines rails and a wcfab intake y bridge and intercooler pipes. Havenít put many miles on it because I have this sound which sounds like if it were a gas motor Iíd say pinging. Has anyone dealt with this and can point me in the right direction? And yes I updated my tune when I did the cp3 conversion. Thanks. It also has a Kennedy dual LP.

2012 2500 tuned and deleted
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