Oil Pump

WARNING: This page is about a different car, the 2007 Chrysler PT Cruiser. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Checking Oil Pump Cover Flatness

Courtesy of CHRYSLER LLC

1 - STRAIGHT EDGE

2 - FEELER GAUGE

3 - OIL PUMP COVER

Inspect the mating surface of the oil pump. Surface should be smooth. Replace pump cover if scratched or grooved.
Lay a straightedge (1) across the pump cover (3) surface. See Fig 1. If a 0.025 mm (0.001 in.) feeler gauge (2) can be inserted between cover and straight edge, cover should be replaced.

Fig 2: Measuring Outer Rotor Thickness
Courtesy of CHRYSLER LLC
Measure thickness and diameter of outer rotor (1). If outer rotor thickness measures 10.699 mm (0.421 in.) or less. or if the diameter is 85.924 mm (3.383 in.) or less, replace outer rotor (1). See Fig 2.

Fig 3: Measuring Inner Rotor Thickness
Courtesy of CHRYSLER LLC
If inner rotor (1) measures 10.699 mm (0.421 in.) or less replace inner rotor (1). See Fig 3.