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Home >> Mitsubishi >> 1990 >> Eclipse Base, Standard >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> 1.8L 4-CYL - VIN (T), 2.0L VIN (R,U,V) & 2.4L VIN (W) 4-Cylinder >> Engine Lubrication >> Oil Pump & Front Cover >> Inspection (2.0L DOHC)

Inspection (2.0L DOHC)

  1. Inspect components for damage. Install oil pump gears in front cover. Using feeler gauge, measure gear-to-front cover clearance between tip of teeth on each gear and front cover.
  2. Place straightedge across front cover above oil pump gears. Using feeler gauge, check gear side clearance between straightedge and both oil pump gears. Check for ridge on oil pump cover in gear operating area. Ensure relief plunger slides freely in bore. Check free length and spring pressure of relief plunger spring. Replace components if not within specification. See OIL PUMP SPECIFICATIONS (2.0L DOHC) table.
  3. On turbo models, ensure oil cooler by-pass valve slides freely. Measure distance from valve body to tip of valve at room temperature. Distance should be 1.358" (34.49 mm). Heat oil to 212°F (100°C) and submerge valve in heated oil for a few minutes. Remove valve and measure distance from valve body to tip of valve. Distance should be at least 1.57" (39.88 mm). Replace valve assembly if measurements are not as specified.
OIL PUMP SPECIFICATIONS (2.0L DOHC)

Application Specification
Gear Side Clearance
Drive Gear
Standard .0031-.0055" (.079-.140 mm)
Limit .0098" (.249 mm)
Driven Gear
Standard .0024-.0047" (.061-.119 mm)
Limit .0098" (.249 mm)
Gear-to-Front Cover Clearance
Drive Gear
Standard .0063-.0083" (.160-.211 mm)
Limit .0098" (.249 mm)
Driven Gear
Standard .0051-.0071" (.130-.180 mm)
Limit .0098" (.249 mm)
Relief Plunger Spring
Free Length 1.835" (46.61 mm)
Spring Pressure 13.4 lbs. @ 1.579" (6.0 kg @ 40.11 mm)