When diagnosing an engine oil leak or a coolant leak on turbocharged V8 engines, it is necessary to use a borescope to identify if the source of the leak is from under the turbochargers.
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Do not remove the transmission before performing this inspection.
Insert the borescope to the inside and outside of the induction pipes.
Insert the borescope to the inside (1) and outside (2) of the induction pipes. Rotate the borescope 360 degrees to search for any leaks. Try using the bore scope in the straight and 90° viewing positions.
Pay special attention to any ferruled or clamped hose connections (1)
Insert the borescope downward towards the turbocharger oil return pipes. Look for leaking connections (1). Also search around the block surface for any standing engine oil or coolant (2).
