Vibration Or Noise
- Inspect for defective bearings or interference of rotating parts with related objects. Consider neglect of engine oil change, sustained use with contamination in oil pipe, a restricted or broken oil filter. Check for repeated abrupt starts and stops that could cause bearing failure.
- If nothing is wrong with lubricating system, an incorrectly balanced rotating section or bent shaft may be suspected. This is due to excessive wear of bearings or contamination that have caused damage to turbine or compressor wheels.
- If any of these conditions exist, turbocharger assembly must be replaced. Before a new turbocharger assembly is installed, carefully check for contamination or pieces of broken turbine or compressor wheels which might be left in manifold system.