turbo noise

relentlesss

Member
Mar 27, 2016
34
Middle river MD
Boat Info
1996 Sea ray 450 Dancer 3126 cats garmin plotter raymarine radar
Engines
3126 Caterpillars 420hp
Good afternoon.

On my stbd motor 3126 mechanical. In a 1996 Sea ray 450 da. On our trip over the weekend. I noticed a ringing or pinging type sound between 2400 and 2500 rpms. If dropped rpms it went away or went above 2600 it went away. I did just clean all air seps and related parts. Checked again nothing seems loose. ?????
 

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