Inspection
PROCEDURE
1. Check the oil pan for cracks or damage and replace it if necessary.
2. Check the oil filter for cracks or damage and replace it if necessary.
3. Check the front cover for wear or damage at the contact surfaces with the oil pump rotors and replace it if necessary.
4. Check the oil pump rotor teeth for wear or damage.

5. Using a feeler gauge, measure the clearance between the oil pump outer rotor and the housing bore in the cover.
Maximum outer rotor clearance: 0.12–0.18 mm

6. Using a feeler gauge, measure the tooth tip clearance of the oil pump gears.
Maximum allowable oil pump gear tooth clearance: 0.001–0.003 mm

7. Using a metal straightedge and feeler gauge, measure the side clearance of the oil pump gears.
Maximum allowable oil pump rotor side clearance: 0.04–0.085 mm
Test yourself
A quick Hyundai Accent quiz: every answer comes with an explanation and a link to the manual page.