Noisy Turbo

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Dirt or debris in the compressor housing
Air leaks in ducting or hoses
Clogged or restricted ducting
Insufficient Lubrication for Turbocharger
Exhaust Manifold leaking
Severe Exhaust restriction
Oil contamination
Failure to Pre-Lubricate Turbocharger at installation and per instructions
Turbocharger Mounting
Turbocharger Housing

1) Remove air intake duct from turbo and inspect inside the wheel vane area for foreign material such as metal or hardware, air filtration material, leaves or dirt. Clean accordingly.

2) Review vanes on compressor wheel for worn or damaged tips. If damaged replace turbo.

1) Carefully inspect all metal and rubber ductwork connections, seals, clamps, o-rings, gaskets associated with the turbocharger.  Repair and replace as needed.  

2) Use a commercial grade smoker to assist or run the vehicle creating a pressurized system, then spray a water and dish soap solution on connections, ducting and charger cooler interfaces.  Leaks will show via soap bubbles created.

1) Inspect ducting for bending, collapsing, rust or deterioration. Remove ducting and inspect internally for oil or material restriction. Repair and replace as needed.


2) Clogged charge air coolers can be reviewed with thermal evaluation guns across the cooler face.  Temperature should drop from compressed air flow ducting across the charger cooler into the exiting ducting.  Pressure should remain the same at the entry and exit of the cooler.

Inspect exhaust manifold for cracks or damage and leaking gaskets.

1) Excessive carbon build up, mixed soot or oil due to engine or turbo failure.

2) Review for incorrect exhaust pipe diameter.

3) Clogged muffler or DPF filter (DPF filter issues are a main concern on Dodge / Cummins 6.7L) 

Review oil velocity, color, burnt or fuel odor. Examine oil for evidence of micro particles of metal filings or flakes. Replace turbo if damaged, change oil and filters at OEM recommended periods. Determine if engine or fuel systems are failing.
At engine start up the turbocharger may have speeds approaching 20,000 rpm induced. Failure to pre-lubricate the turbo at the high pressure oil inlet may result in the turbo operating for a period without any lubrication. This will cause unrepairable damage to the turbo internal components. Be sure to follow guidelines for pre-lubrication
Review all mounting studs, bolts and threads for damage and deterioration. Heat and age will deteriorate metals on and surrounding the turbo. Repair and or replace as required.
Review the turbo casting for evidence of cracks or breaks, often indicated by evidence of black soot on the casting. Replace turbo accordingly.
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