Check the inner-to-outer rotor radial clearance between the inner rotor (A) and outer rotor (B). If the inner-to-outer rotor radial clearance exceeds the service limit, replace the oil pump.

Inner Rotor-to-Outer Rotor Radial Clearance
Standard (New):	0.06−0.16 mm (0.002−0.006 in.)
Service Limit:	0.20 mm (0.008 in.)