Possible Cause

Possible Remedy

Restricted engine crankcase breather

Refer to engine manufacturer's manual, clear restriction

Turbocharger bearing housing sludged or coked

Change engine oil and oil filter, overhaul or replace turbocharger as required

Worn engine piston rings or liners

Refer to engine manufacturer's manual and repair as required

Burnt valves and/or pistons

Refer to engine manufacturer's manual and repair as required

Excessive dirt build up on compressor wheel and/or diffuser vanes

Clean in accordance with details/instructions from Steve Boyle at UFI

Turbocharger damaged

Find and correct cause of failure, repair or replace turbocharger as necessary

Restricted turbocharger oil drain line

Remove restriction or replace damaged parts as required