Garrett official fitting instructions
Official fitting instructions of a turbocharger Garrett by Honeywell
BEFORE REPLACING A TURBO
It is important to conduct a thorough diagnostic check of the engine system to determine if the “fault” is actually the turbocharger.
A lack of power, noisy operation, excessive smoke or oil consumption could result from a faulty fuel injection system, ECU or electrical problems, restricted or blocked air filter, a damaged exhaust system or a lubrication problem. If possible, check crankcase pressure according to the engine manufacturer’s specification. A higher than normal crankcase pressure reading may lead to oil leakage from the turbo into the inlet and exhaust systems.