Toyota 17201-42020 Turbocharger Sub-Assy

Avoid sudden racing or acceleration right after starting a cold engine.

Because the turbine wheel rotates at speeds up to 110,000 rpm, severe damage can result from the interruption of coolant or contamination of the oil supply to the turbine bearings. Check for leaks in the coolant and oil inlet lines and obstructions in the oil drain-back line, as this can cause severe oil loss through the turbocharger seals. Burned oil on the turbine housing is a sign of this. Caution: Whenever a major engine bearing such as a main, connecting rod, or camshaft bearing is replaced, the turbocharger should be flushed with clean oil.