Contents Wiring diagrams Section: Lubrication System All sections

Engine Lubrication Acura RSX I

Lubrication System 25 illustrations ~1145 words

Scheme 1

Scheme 1: Special Tools

Scheme 2

Scheme 2: K20A3 engine

Scheme 3

Scheme 3: K20A2, K20Z1 engines

Symptom Troubleshooting Index

SymptomDiagnostic procedureAlso check for
Excessive engine oil consumptionCheck the loose of the engine oil fill cap, oil drain bolt, and oil filter. Check for oil leaks. Check for worn valve guide(s) (see VALVE STEM-TO-GUIDE CLEARANCE INSPECTION ) or worn valve stem seal(s) (see VALVE STEM-TO-GUIDE CLEARANCE INSPECTION ). Check for damaged or worn piston ring(s) (see PISTON RING REPLACEMENT ). Check for damaged or worn engine internal parts (cylinder wall, pistons, etc.) (see BLOCK AND PISTON INSPECTION ).
Low oil pressure indicator does not come on with the ignition switch ON (II)Do the gauge assembly self-diagnostic function (see SELF-DIAGNOSTIC FUNCTION ). Test the oil pressure switch (see OIL PRESSURE SWITCH TEST ).An open in the wire between the gauge assembly and the oil pressure switch
Low oil pressure indicator stays onCheck the engine oil level. Do the gauge assembly self-diagnostic function (see SELF-DIAGNOSTIC FUNCTION ). Test the oil pressure switch (see OIL PRESSURE SWITCH TEST ). Check the engine oil pressure (see OIL PRESSURE TEST ). Check the oil filter for clogging. Check the oil screen for clogging. Check the relief valve. Test the oil pump (see OIL PUMP REMOVAL ).A wire shorted to ground between the gauge assembly and the oil pressure switch

SYMPTOM TROUBLESHOOTING INDEX

Scheme 4

Scheme 4: Oil Pressure Switch Test
  1. Remove the YEL/RED wire (A) from the engine oil pressure switch (B).
  2. Check for continuity between the positive terminal (C) and the engine (ground). There should be continuity with the engine stopped. There should be no continuity with the engine running.
  3. If the switch fails to operate, check the engine oil level. If the engine oil level is OK, check the engine oil pressure. If the oil pressure is OK, replace the oil pressure switch (see «OIL PRESSURE SWITCH TEST»(/acura/rsx/i-2001-2004/remont/lubrication-system/#engine-lubrication) ).

Scheme 5

Scheme 5: Oil Pressure Switch Replacement
  1. Disconnect the oil pressure switch connector, then remove the oil pressure switch.
  2. Apply liquid gasket to the oil pressure switch threads, then install the oil pressure switch. NOTE: Using too much liquid gasket may cause liquid gasket to enter the oil passage or the end of the new oil pressure switch.

Oil Pressure Test

If the low oil pressure indicator stays on with the engine running, check the engine oil level. If the oil level is correct

Scheme 6

Scheme 6: Oil Pressure Test
  1. Remove the engine oil pressure switch, and install an oil pressure gauge (A).
  2. Start the engine. Shut it off immediately if the gauge registers no oil pressure. Repair the problem before continuing.
  3. Allow the engine to reach operating temperature (fan comes on at least twice). The pressure should be: Engine Oil Temperature: 176°F (80°C) Engine Oil Pressure: At Idle: 70 kPa (0.7 kgf/cm 2 , 10 psi) min. At 3,000 RPM: 300 kPa (3.1 kgf/cm 2 , 44 psi) min.
  4. If the oil pressure is NOT within specification, inspect these items. Check the oil strainer for clogging. Check the oil pump (see «OIL PUMP REMOVAL»(/acura/rsx/i-2001-2004/remont/lubrication-system/#engine-lubrication) ).

Scheme 7

Scheme 7: Engine Oil Replacement

Scheme 8

Scheme 8
  1. Warm up the engine.
  2. Remove the drain bolt (A), and drain the engine oil. K20A3 engine: K20A2, K20Z1 engines
  3. Reinstall the drain bolt with a new washer (B).
  4. Refill with the recommended oil. Capacity K20A3 Engine: At Oil Change: 4.0 L (4.2 US qt) At Oil Change Including Filter: 4.2 L (4.4 US qt) After Engine Overhaul: 5.3 L (5.6 US qt) K20A2, K20Z1 Engines: At Oil Change: 4.5 L (4.8 US qt) At Oil Change Including Filter: 4.7 L (5.0 US qt) After Engine Overhaul: 5.8 L (6.1 US qt)
  5. Run the engine for more than 3 minutes, then check for oil leakage.

Engine Oil Filter Replacement

Special Tools Required

Oil filter wrench 07HAA-PJ70100

Scheme 9

Scheme 9: Engine Oil Filter Replacement

Scheme 10

Scheme 10

Scheme 11

Scheme 11
  1. Remove the oil filter with the special tool.
  2. Inspect the threads (A) and rubber seal (B) on the new filter. Wipe off the seat on the engine block, then apply a light coat of engine oil to the filter rubber seal. Use only filters with a built-in bypass system.
  3. Install the oil filter by hand.
  4. After the rubber seal seats, tighten the oil filter clockwise with the special tool. Tighten: 3/4 turn clockwise Tightening Torque: 12 N.m (1.2 kgf.m, 8.7 lbf.ft)
  5. If four numbers or marks (1 to 4 or "DTRIF" to "DTRIF""DTRIF""DTRIF""DTRIF") are printed around the outside of the filter, use the following procedure to tighten the filter. Spin the filter on until its seal lightly seats against the block/oil cooler, and note which number or mark is at the bottom. Tighten the filter by turning it clockwise three numbers or marks from the one you noted. For example, if number 2 is at the bottom when the seal is seated, tighten the filter until the number 1 comes around the bottom.
  6. After installation, fill the engine with oil up to the specified level, run the engine for more than 3 minutes, then check for oil leakage.

Scheme 12

Scheme 12: K20A3 Engine

Scheme 13

Scheme 13
  1. Remove the oil filter (see «ENGINE OIL FILTER REPLACEMENT»(/acura/rsx/i-2001-2004/remont/lubrication-system/#engine-lubrication__engine-oil-filter-replacement) ).
  2. Remove the oil filter feed pipe.
  3. Install two 20 x 1.5 mm nuts (A) onto the new oil filter feed pipe. Hold the nut with a wrench, then tighten the other nut.
  4. Tighten the oil filter feed pipe to the block to 49 N.m (5.0 kgf.m, 36 lbf.ft), then remove the nuts from the oil filter feed pipe.

Scheme 14

Scheme 14: K20A2, K20Z1 Engines
  1. Remove the oil filter (see «ENGINE OIL FILTER REPLACEMENT»(/acura/rsx/i-2001-2004/remont/lubrication-system/#engine-lubrication__engine-oil-filter-replacement) ).
  2. Remove the oil cooler bypass hoses (A) and oil cooler center bolt (B), then remove the oil cooler (C).
  3. Install the oil cooler using a new O-ring (D). Tighten the oil cooler center bolt to 74 N.m (7.5 kgf.m, 54 lbf.ft).

Scheme 15

Scheme 15: K20A2, K20Z1 Engines
  1. Remove the oil jet, and inspect it as follows. Make sure that a 1.1 mm (0.04 in.) diameter drill will go through the nozzle hole (A) (1.2 mm (0.05 in.) diameter). Insert the other end of a 1.1 mm (0.04 in.) drill into the oil intake (1.2 mm (0.05 in.) diameter). Make sure the check ball (B) moves smoothly and has a stroke of approximately 4.0 mm (0.16 in.). Check the oil jet operation with an air nozzle. It should take at least 200 kPa (2.0 kgf/cm 2 , 28 psi) to unseat the check ball. NOTE: Replace the oil jet assembly if the nozzle is damaged or bent.
  2. Carefully install the oil jet. The mounting torque is critical. Torque: 16 N.m (1.6 kgf.m, 12 lbf.ft)

Scheme 16

Scheme 16: Exploded View

Scheme 17

Scheme 17: Oil Pump Removal

Scheme 18

Scheme 18
  1. Remove the oil pan (see «OIL PAN REMOVAL»(/acura/rsx/i-2001-2004/remont/mechanical/#engine-block) ).
  2. Remove and discard the oil pump chain tensioner.
  3. Remove the oil pump.

Scheme 19

Scheme 19: Oil Pump Inspection

Scheme 20

Scheme 20

Scheme 21

Scheme 21
  1. Remove the pump cover.
  2. 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): 0.02-0.15 mm (0.001-0.006 in.) Service Limit: 0.20 mm (0.08 in.)
  3. Check the housing-to-rotor axial clearance between the rotor (A) and pump housing (B). If the housing-to-rotor axial clearance exceeds the service limit, replace the oil pump. Housing-to-Rotor Axial Clearance Standard (New): 0.02-0.07 mm (0.001-0.003 in.) Service Limit: 0.12 mm (0.005 in.)
  4. Check the housing-to-outer rotor radial clearance between the outer rotor (A) and pump housing (B). If the housing-to-outer rotor radial clearance exceeds the service limit, replace the oil pump. Housing-to-Outer Rotor Radial Clearance Standard (New): 0.15-0.21 mm (0.006-0.008 in.) Service Limit: 0.23 mm (0.009 in.)
  5. Inspect both rotors and the pump housing for scoring or other damage. Replace parts, if necessary.
  6. Install the oil pump cover.

Scheme 22

Scheme 22: Oil Pump Installation

Scheme 23

Scheme 23

Scheme 24

Scheme 24

Scheme 25

Scheme 25
  1. Install the oil pump.
  2. Squeeze the new oil pump chain tensioner (A), then install the set clip (B) on it as shown. NOTE: The set clip is supplied with the oil pump chain tensioner.
  3. Install the oil pump chain tensioner.
  4. Remove the set clip from the oil pump chain tensioner.
  5. Install the oil pan (see «OIL PAN INSTALLATION»(/acura/rsx/i-2001-2004/remont/mechanical/#engine-block) ).