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Engine Noise Under Load

WARNING: This page is about a different car, the 2015 Chevrolet Trax and 2015 Buick Encore. However, it is still accessible from the selected car via links, so may be relevant.
Cause Correction
Low oil pressure Insufficient or poor oil supply to components.
  1. Perform oil pressure test.
  2. Repair or replace all damaged components.
Loose torque converter bolts
  1. Inspect the torque converter bolts and flywheel.
  2. Repair or replace all damaged components.
Loose and/or damaged flywheel
  1. Inspect the flywheel and flywheel attaching bolts.
  2. Repair or replace all damaged components.
Excessive piston-to-cylinder bore clearance
  1. Inspect the piston rings for low ring tension, broken or worn rings, inspect cylinder bore.
  2. Repair or replace all damaged components.
Excessive crankshaft thrust bearing clearance
  1. Inspect the crankshaft end play and crankshaft thrust bearings.
  2. Repair or replace all damaged components.
Excessive crankshaft bearing clearance
  1. Inspect the crankshaft bearings and crankshaft journals.
  2. Repair or replace all damaged components.
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