• HEADINGS
  • Special Tools
  • Component Location Index
  • Symptom Troubleshooting Index
  • Oil Pressure Switch Test
  • Oil Pressure Switch Replacement
  • Oil Pressure Test
  • Engine Oil Replacement
    • '04-05 models
    • '06-08 models
  • Engine Oil Filter Replacement
  • Oil Filter Feed Pipe Replacement
  • Oil Jet Inspection
  • Oil Pump Overhaul
    • Exploded View
    • Oil Pump Removal
    • Oil Pump Inspection
    • Balancer Shaft Inspection
    • Oil Pump Installation
• FIGURES
  • Fig. 1: Identifying Special Tool
  • Fig. 2: Identifying Engine Lubrication Components Location
  • Fig. 3: Identifying YEL/RED Wire And Oil Pressure Switch
  • Fig. 4: Identifying Oil Pressure Switch W/Torque Specification
  • Fig. 5: Identifying Oil Pressure Gauge
  • Fig. 6: Identifying Maintenance Lid And Drain Bolt W/Torque Specifications
  • Fig. 7: Identifying Maintenance Lid And Drain Bolt W/Torque Specifications
  • Fig. 8: Identifying Oil Filter Rubber Seal And Threads
  • Fig. 9: Tightening Oil Filter W/Torque Specification
  • Fig. 10: Identifying Oil Filter Bolt
  • Fig. 11: Identifying Tightening Procedure Chart
  • Fig. 12: Identifying Oil Filter Feed Pipe
  • Fig. 13: Identifying Oil Filter Feed Pipe Nut
  • Fig. 14: Identifying Nozzle Hole Diameter
  • Fig. 15: Exploded View Of Oil Pump W/Torque Specifications
  • Fig. 16: Identifying Oil Pump Chain Tensioner And Bolts
  • Fig. 17: Inserting Pin Driver Into Maintenance Hole
  • Fig. 18: Identifying Oil Pump And Sprocket
  • Fig. 19: Identifying Pump Housing And Bolts
  • Fig. 20: Checking Clearance Between Inner Rotor And Outer Rotor
  • Fig. 21: Checking Clearance Between Rotor And Pump Housing
  • Fig. 22: Checking Clearance Between Outer Rotor And Pump Housing
  • Fig. 23: Checking Balancer Shaft End Play
  • Fig. 24: Identifying Front Balancer Shaft And Rear Balancer Shaft
  • Fig. 25: Measuring Inner Diameters Of No 1 Bearing For Front Balancer Shaft Hole
  • Fig. 26: Measuring Inner Diameters Of No 1 Bearing For Rear Balancer Shaft Hole
  • Fig. 27: Measuring Diameters Of No. 1 Journal On Front Balancer Shaft
  • Fig. 28: Measuring Diameters Of No. 1 Journal On Rear Balancer Shaft
  • Fig. 29: Identifying Bearings And Upper Balancer Shaft Holder W/Torque Specifications
  • Fig. 30: Measuring Widest Part With Plastigage
  • Fig. 31: Aligning Punch Mark On Rear Balancer Shaft In Center Of Two Punch Marks On Front Balancer Shaft
  • Fig. 32: Applying Engine Oil to Threads W/Torque Specifications
  • Fig. 33: Identifying Pump Housing Bolts W/Torque Specification
  • Fig. 34: Aligning Dowel Pin On Rear Balancer Shaft With Mark On Oil Pump
  • Fig. 35: Inserting Pin Driver Into Maintenance Hole
  • Fig. 36: Identifying Oil Pump Sprocket Mounting Bolt W/Torque Specification
  • Fig. 37: Identifying Oil Pump Chain Tensioner And Set Clip
  • Fig. 38: Identifying Oil Pump Chain Tensioner W/Torque Specification
  • Fig. 39: Identifying Oil Pump Chain Tensioner Set Clip
• TABLES
  • SYMPTOM TROUBLESHOOTING CHART

2004-08 ENGINE

Engine Lubrication - TSX

Special Tools

Fig. 1: Identifying Special Tool
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Component Location Index

Fig. 2: Identifying Engine Lubrication Components Location
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Symptom Troubleshooting Index

SYMPTOM TROUBLESHOOTING CHART

Symptom	Diagnostic procedure	Also check for
Excessive engine oil consumption	Verify the engine oil filler cap, oil drain bolt, and oil filter are tight. Check for oil leaks. Check for worn valve guide(s) (see VALVE SEAT RECONDITIONING ) or worn valve stem seal(s) (see VALVE SEAT RECONDITIONING ). Check for damaged or worn piston ring(s) (see BLOCK AND PISTON INSPECTION ). 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 control module 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 control module and the oil pressure switch
Low oil pressure indicator stays on	Check the engine oil level. Do the gauge control module 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. Inspect the oil pump (see OIL PUMP INSPECTION ).	A wire shorted to ground between the gauge control module and the oil pressure switch

Oil Pressure Switch Test

1. Remove the YEL/RED wire (A) from the oil pressure switch (B).

   Fig. 3: Identifying YEL/RED Wire And Oil Pressure Switch
   Courtesy of AMERICAN HONDA MOTOR CO., INC.

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 REPLACEMENT ).

Oil Pressure Switch Replacement

1. Disconnect the oil pressure switch connector, then remove the oil pressure switch.

   Fig. 4: Identifying Oil Pressure Switch W/Torque Specification
   Courtesy of AMERICAN HONDA MOTOR CO., INC.

2. Remove all of the old liquid gasket from the switch and switch mounting hole.
3. Apply a very small amount of liquid gasket to the new 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 oil pressure warning indicator stays on with the engine running, check the engine oil level. If the oil level is correct:

1. Remove the oil pressure switch, and install an oil pressure gauge (A).

   Fig. 5: Identifying Oil Pressure Gauge
   Courtesy of AMERICAN HONDA MOTOR CO., INC.

2. Start the engine. Shut it off immediately if the gauge registers no oil pressure, and 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/cm² , 10 psi) min.
   • At 3,000 rpm: 300 kPa (3.1 kgf/cm² , 44 psi) min.
4. If the oil pressure is not within specifications, inspect these items.
   • Check the oil screen for clogging.
   • Inspect the oil pump (see OIL PUMP INSPECTION ).

Engine Oil Replacement

'04-05 models

1. Warm up the engine.
2. Remove the maintenance lid (A).

   Fig. 6: Identifying Maintenance Lid And Drain Bolt W/Torque Specifications
   Courtesy of AMERICAN HONDA MOTOR CO., INC.

3. Remove the drain bolt (B), and drain the engine oil.
4. Reinstall the drain bolt with a new washer (C).
5. Refill with the recommended oil (see LUBRICANTS AND FLUIDS ).

   Capacity

   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)

6. Run the engine for more than 3 minutes, then check for oil leakage.

'06-08 models

1. Warm up the engine.
2. Remove the maintenance lid (A).

   Fig. 7: Identifying Maintenance Lid And Drain Bolt W/Torque Specifications
   Courtesy of AMERICAN HONDA MOTOR CO., INC.

3. Remove the drain bolt (B), and drain the engine oil.
4. Reinstall the drain bolt with a new washer (C).
5. Refill with the recommended oil (see LUBRICANTS AND FLUIDS ).

   Capacity

   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)

6. Connect the Honda Diagnostic System (HDS) to the data link connector (DLC) (see step 2 ofHOW TO USE THE HDS (HONDA DIAGNOSTIC SYSTEM) ).
7. Turn the ignition switch ON (II).
8. Make sure the HDS communicates with the vehicle and the engine control module (ECM)/powertrain control module (PCM). If it doesn't communicate, troubleshoot the DLC circuit (see DLC CIRCUIT TROUBLESHOOTING ).
9. Select BODY ELECTICAL with the HDS.
10. Select ADJUSTMENT in the GAUGES MENU with the HDS.
11. Select RESET in the MAINTENANCE MINDER with the HDS.
12. Select RESETTING THE ENGINE OIL LIFE with the HDS.

    NOTE:

    If you changed the ATF at the same time with the engine oil, select RESETTING THE ENGINE OIL LIFE AND ATF with the HDS instead.

13. Run the engine for more than 3 minutes, then check for oil leakage.
14. Reset the maintenance display (see RESETTING THE MAINTENANCE INFORMATION DISPLAY ).

Engine Oil Filter Replacement

Special Tools Required

Oil filter wrench 07AAA-PLCA100

1. Remove the oil filter with the oil filter wrench.
2. Inspect the threads (A) and the rubber seal (B) on the new filter. Clean the seat on the engine block, then apply a light coat of oil to the new filter rubber seal. Use only filters with a built-in bypass system.

   Fig. 8: Identifying Oil Filter Rubber Seal And Threads
   Courtesy of AMERICAN HONDA MOTOR CO., INC.

3. Install the oil filter by hand.
4. After the rubber seal seats, tighten the oil filter clockwise with the oil filter wrench (A).

   Tighten: 3/4 Turn Clockwise

   Tightening Torque: 12 N.m (1.2 kgf.m, 8.8 lbf.ft)

   Fig. 9: Tightening Oil Filter W/Torque Specification
   Courtesy of AMERICAN HONDA MOTOR CO., INC.

5. If four numbers or triangle marks (1 to 4 or triangle marks) 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, 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.

     Fig. 10: Identifying Oil Filter Bolt
     Courtesy of AMERICAN HONDA MOTOR CO., INC.

     Fig. 11: Identifying Tightening Procedure Chart

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.

Oil Filter Feed Pipe Replacement

1. Remove the oil filter (see ENGINE OIL FILTER REPLACEMENT ).
2. Remove the oil filter feed pipe.

   Fig. 12: Identifying Oil Filter Feed Pipe
   Courtesy of AMERICAN HONDA MOTOR CO., INC.

3. Install the 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.

   Fig. 13: Identifying Oil Filter Feed Pipe Nut
   Courtesy of AMERICAN HONDA MOTOR CO., INC.

4. Tighten the oil filter feed pipe to the block to 50 N.m (5.0 kgf.m, 37 lbf.ft), then remove the nuts from the oil filter feed pipe.

Oil Jet Inspection

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/cm² , 28 psi) to unseat the check ball.

   NOTE:

   Replace the oil jet assembly if the nozzle is damaged or bent.

   Fig. 14: Identifying Nozzle Hole Diameter
   Courtesy of AMERICAN HONDA MOTOR CO., INC.

2. Carefully install the oil jet. The mounting torque is critical.

   Torque: 16 N.m (1.6 kgf.m, 12 lbf.ft)

Oil Pump Overhaul

Exploded View

Fig. 15: Exploded View Of Oil Pump W/Torque Specifications
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Oil Pump Removal

1. Turn the crankshaft pulley so its top dead center (TDC) mark lines up with the pointer (see step 4 of CAM CHAIN REMOVAL .
2. Remove the oil pan (see OIL PAN REMOVAL ).
3. Remove and discard the oil pump chain tensioner.

   Fig. 16: Identifying Oil Pump Chain Tensioner And Bolts
   Courtesy of AMERICAN HONDA MOTOR CO., INC.

4. To hold the rear balancer shaft, insert a 6 mm pin driver (A) into the maintenance hole in the lower balancer shaft holder and through the rear balancer shaft.

   Fig. 17: Inserting Pin Driver Into Maintenance Hole
   Courtesy of AMERICAN HONDA MOTOR CO., INC.

5. Loosen the oil pump sprocket mounting bolt.
6. Remove the oil pump sprocket (A), then remove the oil pump (B).

   Fig. 18: Identifying Oil Pump And Sprocket
   Courtesy of AMERICAN HONDA MOTOR CO., INC.

Oil Pump Inspection

1. Remove the pump housing.

   Fig. 19: Identifying Pump Housing And Bolts
   Courtesy of AMERICAN HONDA MOTOR CO., INC.

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): 0.06-0.16 mm (0.002-0.006 in.)

   Service Limit: 0.20 mm (0.008 in.)

   Fig. 20: Checking Clearance Between Inner Rotor And Outer Rotor
   Courtesy of AMERICAN HONDA MOTOR CO., INC.

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): 0.035-0.070 mm 0.0013-0.0028 in.)

   Service Limit: 0.12 mm (0.005 in.)

   Fig. 21: Checking Clearance Between Rotor And Pump Housing
   Courtesy of AMERICAN HONDA MOTOR CO., INC.

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.)

   Fig. 22: Checking Clearance Between Outer Rotor And Pump Housing
   Courtesy of AMERICAN HONDA MOTOR CO., INC.

5. Inspect both rotors and the pump housing for scoring or other damage. Replace the parts if necessary.

Balancer Shaft Inspection

1. Seat the balancer shaft by pushing it away from the oil pump sprocket end of the oil pump.
2. Zero the dial indicator against the end of the balancer shaft, then push the balancer shaft back and forth and read the end play.

   Balancer Shaft End Play

   Front Balancer Shaft:

   • Standard (New): 0.063-0.108 mm (0.0025-0.0043 in.)
   • Service Limit: 0.14 mm (0.0055 in.)

   Rear Balancer Shaft:

   • Standard (New): 0.063-0.108 mm (0.0025-0.0043 in.)
   • Service Limit: 0.14 mm (0.0055 in.)

   Fig. 23: Checking Balancer Shaft End Play
   Courtesy of AMERICAN HONDA MOTOR CO., INC.

3. Remove the baffle plate (A) and upper balancer shaft holder (with bearings) (B), then remove the front balancer shaft (C) and rear balancer shaft (D).

   Fig. 24: Identifying Front Balancer Shaft And Rear Balancer Shaft
   Courtesy of AMERICAN HONDA MOTOR CO., INC.

4. Measure the inner diameters of the No. 1 bearing for the front balancer shaft hole and the rear balancer shaft hole.

   Bearing Inner Diameter Front: Standard (New): 20.000-20.020 mm (0.7874-0.7882 in.)

   Service Limit: 20.03 mm (0.789 in.)

   Rear: Standard (New): 24.000-24.020 mm (0.9449-0.9457 in.)

   Service Limit: 24.03 mm (0.946 in.)

   Front:.

   Fig. 25: Measuring Inner Diameters Of No 1 Bearing For Front Balancer Shaft Hole
   Courtesy of AMERICAN HONDA MOTOR CO., INC.

   Rear:

   Fig. 26: Measuring Inner Diameters Of No 1 Bearing For Rear Balancer Shaft Hole
   Courtesy of AMERICAN HONDA MOTOR CO., INC.

5. Measure the diameters of the No. 1 journal on the front balancer shaft and rear balancer shaft.

   Journal Diameter

   Front:

   • Standard (New): 19.938-19.950 mm (0.7850-0.7854 in.)
   • Service Limit: 19.92 mm (0.784 in.)

   Rear:

   • Standard (New): 23.938-23.950 mm (0.9424-0.9429 in.)
   • Service Limit: 23.92 mm (0.942 in.)

   Front:

   Fig. 27: Measuring Diameters Of No. 1 Journal On Front Balancer Shaft
   Courtesy of AMERICAN HONDA MOTOR CO., INC.

   Rear:

   Fig. 28: Measuring Diameters Of No. 1 Journal On Rear Balancer Shaft
   Courtesy of AMERICAN HONDA MOTOR CO., INC.

6. Clean both balancer shaft No. 2 journals and bearing halves with a clean shop towel, then install the balancer shaft on the lower balancer shaft holder.
7. Place one strip of plastigage across each No. 2 journal.
8. Reinstall the bearings and upper balancer shaft holder, then torque the bolts.

   NOTE:

   Do not rotate the balancer shafts during inspection.

   Fig. 29: Identifying Bearings And Upper Balancer Shaft Holder W/Torque Specifications
   Courtesy of AMERICAN HONDA MOTOR CO., INC.

9. Remove the upper balancer shaft holder and bearings, then measure the widest part with the plastigage. If the balancer shaft No. 2 journal oil clearance is out-of-tolerance, install new bearings, and recheck. If it is still out-of-tolerance, replace the balancer shafts.

   No. 2 Journal Oil Clearance

   Standard (New): 0.060-0.120 mm (0.0024-0.0047 in.)

   Service Limit: 0.15 mm (0.006 in.)

   Fig. 30: Measuring Widest Part With Plastigage
   Courtesy of AMERICAN HONDA MOTOR CO., INC.

10. Align the punch mark on the rear balancer shaft in the center of the two punch marks on the front balancer shaft, then install the balancer shafts on the lower balancer shaft holder.

    Fig. 31: Aligning Punch Mark On Rear Balancer Shaft In Center Of Two Punch Marks On Front Balancer Shaft
    Courtesy of AMERICAN HONDA MOTOR CO., INC.

11. Apply new engine oil to the threads of the 8 mm bolts (A).

    Fig. 32: Applying Engine Oil to Threads W/Torque Specifications
    Courtesy of AMERICAN HONDA MOTOR CO., INC.

12. Install the upper balancer shaft holder (B) and baffle plate (C).
13. Install the pump housing.

    Fig. 33: Identifying Pump Housing Bolts W/Torque Specification
    Courtesy of AMERICAN HONDA MOTOR CO., INC.

Oil Pump Installation

1. Make sure the No. 1 piston is at TDC (see step 6 of CAM CHAIN REMOVAL ).
2. Align the dowel pin (A) on the rear balancer shaft with the mark (B) on the oil pump.

   Fig. 34: Aligning Dowel Pin On Rear Balancer Shaft With Mark On Oil Pump
   Courtesy of AMERICAN HONDA MOTOR CO., INC.

3. To hold the rear balancer shaft, insert a 6 mm pin driver (A) into the maintenance hole in the lower balancer shaft holder and through the rear balancer shaft.

   Fig. 35: Inserting Pin Driver Into Maintenance Hole
   Courtesy of AMERICAN HONDA MOTOR CO., INC.

4. Apply new engine oil to the threads of the oil pump sprocket mounting bolt (A).

   Fig. 36: Identifying Oil Pump Sprocket Mounting Bolt W/Torque Specification
   Courtesy of AMERICAN HONDA MOTOR CO., INC.

5. Loosely install the oil pump (B), then install the oil pump sprocket (C).
6. Remove the pin driver (D).
7. Tighten the oil pump mounting bolts.
8. 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.

   Fig. 37: Identifying Oil Pump Chain Tensioner And Set Clip
   Courtesy of AMERICAN HONDA MOTOR CO., INC.

9. Install the new oil pump chain tensioner.

   Fig. 38: Identifying Oil Pump Chain Tensioner W/Torque Specification
   Courtesy of AMERICAN HONDA MOTOR CO., INC.

10. Remove the set clip from the oil pump chain tensioner.

    Fig. 39: Identifying Oil Pump Chain Tensioner Set Clip
    Courtesy of AMERICAN HONDA MOTOR CO., INC.

11. Install the oil pan (see OIL PAN INSTALLATION ).