B18-009

Service Bulletin
18-009
March 16, 2018
07536 Version 2
Engine Oil Consumption Exceeds Client Expectations
AFFECTED VEHICLES
Year
Model
Trim
VIN range
2010–13
MDX
ALL
ALL
2011–12
RL
ALL
ALL
2009–14
TL SH-AWD
ALL
ALL
2010–13
ZDX
ALL
ALL
SYMPTOM
The oil control rings may become clogged with carbon deposits. These deposits restrict the ability to scrape and return
oil from the cylinder walls to the crankcase, which can result in engine oil consumption that may exceed client
expectations.
CORRECTIVE ACTION
If the client complains of oil consumption, do the oil consumption test. If the test shows excessive oil consumption,
contact your DPSM for approval, then disassemble and inspect the engine. In most cases, you will need to replace the
pistons, piston pins, rings and spark plugs.
REQUIRED MATERIALS
Part Name
Part Number
Quantity
Acura Long-Life Antifreeze/Coolant Type 2
OL999-9011
3
ATF Fluid
08200-9008A
4
Acura Genuine Motor Oil 5W-20
08798-9033
6
Power Steering Fluid (MDX/ZDX)
08206-9002
3
CLIENT INFORMATION: The information in this bulletin is intended for use only by skilled technicians who have the proper tools, equipment,
and training to correctly and safely maintain your vehicle. These procedures should not be attempted by “do-it-yourselfers,” and you should not
assume this bulletin applies to your vehicle, or that your vehicle has the condition described. To determine whether this information applies,
contact an authorized Acura automobile dealer.
© 2018 American Honda Motor Co., Inc. – All Rights Reserved
Page 1 of 25
TOOL INFORMATION
Part Name
Tool Number
Quantity
Tapered Piston Ring Compressor (90mm)
ARP 901-9000
(commercially available or
equivalent)
1
Ridge Reamer (if needed)
WR30A (commercially
available or equivalent)
1
Part Name
Part Number
Quantity
Timing Belt
14400-RCA-A01
1
Flange Bolt (10 mm X 30 mm)
90163-SDB-A00
3
Flange Bolt (10 mm X 35 mm)
90163-SDA-A01
2
Spool Valve Filter Assembly
15825-P8A-A01
1
Oil Filter
15400-PLM-A01
1
EGR Pipe Gasket A
18716-R70-A01
1
EGR Pipe Gasket B
18719-R70-A01
1
Head Cover Gasket Set
12030-R70-A00
1
Head Cover Gasket Set RR
12050-R70-A00
1
Cylinder Head Gasket
12251-RKG-004
2
Exhaust Chamber Gasket
18115-R70-A01
2
Exhaust Pipe Gasket
18212-SA7-003
2
Front Injector Base Gasket
17055-RYE-A01
1
Front Water Passage Gasket
19411-P8A-A03
1
Intake Manifold Gasket
17105-RCJ-A01
1
Intake Manifold Cover Gasket (upper)
17146-R70-A01
1
Oil Hole Gasket
15115-P8A-A01
1
Pre Chamber Gasket
18393-SDB-A00
1
Injector Base Gasket
17065-RYE-A01
1
Water Passage Gasket
19412-P8A-A02
1
Self-Lock Nut (10 mm)
90212-SA5-003
12
Self-Lock Nut (8 mm)
90212-RCA-A01
8
Oil Seal (41 mm X 56 mm X 7 mm)
91212-R70-A02
1
O-Ring
15221-RYE-A01
1
O-Ring (31.2 X 4.1)
91314-PH7-003
2
O-Ring (7.47 X 3.6)
91301-PLC-000
2
Bore Plate Seal
17112-RKB-003
1
Spark Plug
12290-R40-A02
6
PARTS INFORMATION FOR ALL MODELS
Page 2 of 25
PARTS INFORMATION ADDITIONAL (MDX)
Part Name
Part Number
Quantity
Converter Bolt
18176-PT0-003
3
Flange Bolt (10 mm X 20 mm)
90163-S5A-000
10
Flange Bolt (10 mm X 25 mm)
90113-S3V-A00
16
Flange Bolt (10 mm X 40 mm)
90164-SHJ-A00
2
Flange Bolt (12 mm X 115 mm)
90161-SZA-A00
1
Flange Bolt (12 mm X 20 mm)
95701-12020-08
1
Flange Bolt (12 mm X 65 mm)
95701-12065-08
2
Flange Bolt (12 mm X 83 mm)
90163-SHJ-A00
4
Pre Chamber Gasket
18393-SJA-A01
1
Part Name
Part Number
Quantity
Flange Bolt (10 mm X 30 mm)
90113-SJA-003
8
Flange Bolt (12 mm X 30 mm)
95701-12030-08
3
Flange Bolt (12 mm X 85 mm)
90167-SDA-A00
4
Flange Bolt (6 mm X 12 mm)
90003-RNA-A00
2
Converter Bolt
18176-PT0-003
6
Flange Nut (10 mm)
90310-TK5-A00
4
Hex Cap Nut (10 mm)
90310-SJA-000
8
Flange Bolt (10 mm X 20 mm)
90163-S5A-000
8
Flange Bolt (10 mm X 60 mm)
90168-TA1-A00
2
Flange Bolt (12 mm X 45 mm)
90161-SDA-A01
1
Part Name
Part Number
Quantity
Flange Bolt (10 mm X 25 mm)
90113-S3V-A00
8
Flange Bolt (12 mm X 30 mm)
90176-SKN-000
2
Flange Bolt (12 mm X 56 mm)
90170-TA1-A00
4
Hex Cap Nut (10 mm)
90310-SJA-000
4
Converter Bolt
18176-PT0-003
3
Flange Bolt (10 mm X 20 mm)
90163-S5A-000
8
Flange Bolt (10 mm X 60 mm)
90168-TA1-A00
2
Flange Bolt (12 mm X 45 mm)
90161-SDA-A01
1
PARTS INFORMATION ADDITIONAL (RL)
PARTS INFORMATION ADDITIONAL (TL)
Page 3 of 25
PARTS INFORMATION ADDITIONAL (ZDX)
Part Name
Part Number
Quantity
Flange Bolt (10 mm X 75 mm)
95701-10075-08
2
Converter Bolt
18176-PT0-003
3
Flange Bolt (10 mm X 20 mm)
90163-S5A-000
10
Flange Bolt (10 mm X 25 mm)
90113-S3V-A00
16
Flange Bolt (10 mm X 40 mm)
90164-SHJ-A00
2
Flange Bolt (12 mm X 115 mm)
90161-SZA-A00
1
Flange Bolt (12 mm X 20 mm)
95701-12020-08
1
Flange Bolt (12 mm X 65 mm)
95701-12065-08
2
Flange Bolt (12 mm X 83 mm)
90163-SHJ-A00
4
Pre Chamber Gasket
18393-SJA-A01
1
Part Name
Part Number
Quantity
Front Cylinder Head (MDX)
10004-RYE-A11
1
Rear Cylinder Head (MDX)
10005-RYE-A11
1
Front Cylinder Head (RL)
10004-RKG-A03
1
Rear Cylinder Head (RL)
10005-RKG-A03
1
Front Cylinder Head (TL)
10004-RK2-A02
1
Rear Cylinder Head (TL)
10005-RK2-A02
1
Front Cylinder Head (ZDX)
10004-RK2-A02
1
Rear Cylinder Head (ZDX)
10005-RK2-A02
1
Part Name
Part Number
Quantity
Piston Set
13010-RKG-305
6
Piston Ring Set
13011-RKG-305
6
Part Name
Part Number
Quantity
Short Block (MDX)
10002-RYE-A11
1
Short Block (RL)
10002-RKG-A07
1
Short Block (TL)
10002-RK2-A04
1
Short Block (ZDX)
10002-RP6-A02
1
PARTS INFORMATION-CYLINDER HEADS
PARTS INFORMATION-PISTONS/RINGS
PARTS INFORMATION-SHORT BLOCK
Page 4 of 25
WARRANTY CLAIM INFORMATION
NOTE: There is no additional flat rate time for cylinder head replacement since this component is already
disassembled.
The normal warranty applies.
Operation
Number
Description
1111EE
2010-13 MDX: Do the engine oil
consumption test, and replace the
pistons, rings, and spark plugs.
If the front cylinder head was
replaced - add
A
Flat Rate
Time
13.1 hrs
Defect
Code
Symptom
Code
Template
ID
06901
09401
B18009A
06901
09401
B18009B
06901
09401
B18009C
B
If the rear cylinder head was
replaced - add
C
If both front and rear cylinder
heads were replaced - add
06901
09401
B18009D
1111EF
2010-13 MDX: Do the engine oil
consumption test, and replace the
short block.
06901
09401
B18009E
A
If the front cylinder head was
replaced - add
06901
09401
B18009F
B
If the rear cylinder head was
replaced - add
06901
09401
B18009G
C
If both front and rear cylinder
heads were replaced - add
06901
09401
B18009H
1111EE
2009-14 TL: Do the engine oil
consumption test, and replace the
pistons, rings, and spark plugs.
If the front cylinder head was
replaced - add
06901
09401
B18009I
06901
09401
B18009J
06901
09401
B18009K
A
13.6 hrs
11.0 hrs
B
If the rear cylinder head was
replaced - add
C
If both front and rear cylinder
heads were replaced - add
06901
09401
B18009L
1111EF
2009-14 TL: Do the engine oil
consumption test, and replace the
short block.
06901
09401
B18009M
A
If the front cylinder head was
replaced - add
06901
09401
B18009N
11.0 hrs
B
If the rear cylinder head was
replaced - add
06901
09401
B18009O
C
If both front and rear cylinder
heads were replaced - add
06901
09401
B18009P
Failed Part
Number
10002-RYE-A10
10002-RK2-A03
Page 5 of 25
1111EE
A
2011-12 RL: Do the engine oil
consumption test, and replace the
pistons, rings, and spark plugs.
If the front cylinder head was
replaced - add
10.4 hrs
06901
09401
B18009Q
06901
09401
B18009R
06901
09401
B18009S
B
If the rear cylinder head was
replaced - add
C
If both front and rear cylinder
heads were replaced - add
06901
09401
B18009T
1111EF
2010-13 RL: Do the engine oil
consumption test, and replace the
short block.
06901
09401
B18009U
A
If the front cylinder head was
replaced - add
06901
09401
B18009V
B
If the rear cylinder head was
replaced - add
06901
09401
B18009W
C
If both front and rear cylinder
heads were replaced - add
06901
09401
B18009X
1111EE
2010-13 ZDX: Do the engine oil
consumption test, and replace the
pistons, rings, and spark plugs.
If the front cylinder head was
replaced - add
06901
09401
B28009A
06901
09401
B28009B
06901
09401
B28009C
A
11.2 hrs
11.0 hrs
B
If the rear cylinder head was
replaced - add
C
If both front and rear cylinder
heads were replaced - add
06901
09401
B28009D
1111EF
2010-13 ZDX: Do the engine oil
consumption test, and replace the
short block.
06901
09401
B28009E
A
If the front cylinder head was
replaced - add
06901
09401
B28009F
B
If the rear cylinder head was
replaced - add
06901
09401
B28009G
C
If both front and rear cylinder
heads were replaced - add
06901
09401
B28009H
Skill Level:
11.6 hrs
10002-RKG-A06
10002-RP6-A01
Repair Technician
DIAGNOSIS
Do an engine oil consumption test. Refer to job aid Engine Oil Consumption Test.
Review the results of the engine oil consumption test.
If the engine is consuming an unusually high amount of oil, contact your DPSM for approval, then go to REPAIR
PROCEDURE.
 If the engine is consuming a normal amount of engine oil, the vehicle is OK. Have the service advisor explain to
the client that the vehicle is OK, and that the consumption of oil is within a normal range.
NOTE: Have the service advisor remind the client to check the engine oil level every time the fuel tank is filled.
Modern engines require less frequent oil changes, which may impact the amount of oil used between oil changes.

Page 6 of 25
REPAIR PROCEDURE
NOTE: The following service information procedures have been used in full or in part within this service bulletin.
For more detail on these procedures and torque specifications for some components, refer to the service information.
 Engine Oil Replacement
 Battery Terminal Disconnection and Reconnection
 Fuel Pressure Relieving
 Coolant Replacement
 Drive Belt Removal/Installation
 Hydraulic Power Steering Fluid Check/Replacement
 Air Cleaner Removal/Installation
 Fuel Line/Quick-Connect Fitting Removal
 Front Bulkhead Cover Replacement
 Cylinder Head Cover Removal
 Intake Manifold Removal and Installation
 Warm Up TWC Removal/Installation
 Cylinder Head Removal and Installation
 Cam Chain Removal and Installation
 Valve Adjustment
 Propeller Shaft Removal
 Alternator Removal and Installation
 Ignition coil and Spark Plug Removal and Installation
 Exhaust Pipe and Muffler Replacement
 Strut Brace Removal/Installation
Relieve the fuel pressure.
NOTE:
 Use fender covers to avoid damaging painted surfaces.
 To avoid damaging any wires and terminals, unplug the circuit connectors carefully while holding the connector
portion.
 Connect the i-HDS to the DLC, and monitor the ECT SENSOR 1. To avoid damaging the cylinder head, wait
until the engine coolant temperature drops below 100°F (38°C) before loosening the cylinder head bolts.
 Mark all wiring and hoses to avoid misconnection. Also, be sure that they do not contact any other wiring or
hoses or interfere with any other parts.
Wait until the engine is cool, then carefully remove the radiator cap.
Loosen the drain plug on the radiator, and drain the engine coolant.
Plug the power steering hoses at the reservoir, and move them out of the way.
Do the battery removal procedure.
Remove the engine cover. (TL has multiple covers.)
Page 7 of 25
Disconnect the A/C suction line bracket at the right strut tower to allow for more clearance.
Remove the alternator.
Remove the intake manifold.
Remove the six ignition coils.
Remove the timing belt.
Disconnect the following engine wire harness connectors, and remove the wire harness clamps from the cylinder head:










Six injector connectors
Knock sensor connector
ECT sensor 1 connector
Engine mount control solenoid valve connector
EGR valve connector
CMP sensor connector
Rocker arm oil control solenoid connector
Rocker arm oil pressure switch connector
Two A/F sensor connectors
Two secondary HO2S connectors
Remove the front warm up TWC and the rear warm up TWC.
Page 8 of 25
Remove the quick-connect fitting cover, then disconnect the fuel feed hose.
Remove the connector bracket from the front cylinder head.
Remove the mount control solenoid valve bracket from the rear cylinder head.
Page 9 of 25
Remove the injector bases.
Remove the water passage.
Remove the camshaft pulleys and the back covers.
CYLINDER HEAD REMOVAL AND INSPECTION
Remove the cylinder head covers.
Remove the cylinder head bolts. To prevent warpage, loosen the bolts in sequence 1/3 turn at a time; repeat the
sequence until all the bolts are loosened.
Remove the cylinder heads, and visually inspect the head of the valves on the combustion side of the cylinder head for
damage.
NOTE: This is only a visual inspection looking for damage to the valves.
 If any of the valves show signs of damage, replace the affected cylinder head and go to CYLINDER BORE
INSPECTION.
 If the valves are ok, go to step 4.
Visually inspect each of the spark plugs for damaged or melted pieces of the center electrode or ground electrode.


If any of the spark plug shows signs of damage, remove the valve closest to the damaged plug from the cylinder
head and go to step 5.
If the spark plugs are OK, go to CYLINDER BORE INSPECTION.
Visually inspect the cylinder head valve seat and the valve seat face for damage.


If there are any signs of damage replace the cylinder head and go to CYLINDER BORE INSPECTION.
If the valves and valve seats are ok, assemble the cylinder head and go to CYLINDER BORE INSPECTION.
Page 10 of 25
CYLINDER BORE INSPECTION
NOTE: IMPORTANT – When inspecting cylinder bores for blocks related to this service bulletin, keep in mind that
blocks were produced with an aluminum cylinder sleeve. This sleeve will look characteristically different from most other
engines that you have done service on. Additionally, just because a defect can be felt by a fingernail or pencil, it does
not necessarily require the block to be changed.
Inspect the cylinder for any obvious concerns. Listed below are examples of concerns that may be found during your
inspection, which have been proven by factory testing to not create a functional issue.
 During piston assembly at the factory, there may have been a vertical scratch created. This scratch can run the
entire length of the cylinder bore and can be felt by a fingernail. Potentially, each bore could be effected; however,
the cylinder block is OK. Go to OIL PAN REMOVAL.
 In some cases, there is a discoloration of the cylinder bore. Examples are shown below. The cylinder block is OK.
Go to OIL PAN REMOVAL.
 Additionally, blocks that have an area of light bore scuffing, also shown below, have been confirmed by testing that
the cylinder block is OK. Go to OIL PAN REMOVAL.
 If the concern that you observe is different from these examples, contact your DPSM for evaluation.
Page 11 of 25
ENGINE OIL PAN REMOVAL
Drain the engine oil.
Disconnect the secondary HO2S.
Remove the under-floor TWC.
NOTE: Do not remove the front and rear secondary HO2S sensor.
Remove the rear warm up TWC bracket.
Disconnect the CKP sensor connector.
Remove the torque converter cover.
Remove the transmission assembly mounting bolts attached to the oil pan.
Page 12 of 25
Remove the bolts securing the oil pan.
Using a flat blade screwdriver, separate the oil pan from the engine block as shown.
Page 13 of 25
Remove the oil pan.
REMOVAL OF PISTON AND RODS
Remove the engine oil strainer and baffle plate.
Page 14 of 25
If you can feel a ridge of metal or hard carbon around the top of each cylinder, remove it with a ridge reamer.
Remove the connecting rod caps after setting the connecting rod journal at bottom dead center (BDC) for each cylinder.
Remove the piston /connecting rod assembly by pushing on the connecting rod.
NOTE:
 Before removing the rod caps, use a grease pencil or suitable marking pen to mark each cap and its
corresponding connecting rod with the cylinder number it came from. This ensures you are putting the same rod
and cap back together with the right orientation.
 Take care not to damage the oil jets, the connecting rod journal, or the cylinder with the connecting rod.
Do not confuse the existing markings on the side of the connecting rod and rod cap with a cylinder number.
They’re just manufacturing marks referring to the size of the big end of the rod.
 When torqueing the rod cap bolts, refer to the service information for details.
If you would like to see a video on this subject, we have added one to Tech2Tech®. Look for “Tips When Working
With Fracture Rods.”

Page 15 of 25
Remove the snap rings from both sides of each piston. Start at the cutout in the piston pin bore. Remove the snap
rings carefully so they do not go flying or get lost. Wear eye protection.
Separately heat each piston and connecting rod assembly to about 158 °F (70 °C), then remove the piston pin.
Page 16 of 25
INSTALLATION OF PISTONS, RODS, AND RINGS
Install a piston pin snap ring only on one side of the new piston.
Coat the new piston pin bore in the piston, the bore in the connecting rod, and the piston pin with new engine oil.
Heat the new piston to about 158°F (70°C).
Page 17 of 25
Assemble the new piston and the connecting rod with the arrow and the embossed mark on the same side. Install the
new piston pin.
NOTE: Apply new engine oil to the new piston pin.
Install the remaining snap rings.
Assemble the other new pistons the same way.
Page 18 of 25
Install the rings as shown. The top ring has a 1E mark and the second ring has a 2E mark. The manufacturing marks
must be facing upward.
Top Ring (Standard) A: 3.1 mm (0.122 in)
B: 1.2 mm (0.047 in)
Second Ring (Standard) A: 3.4 mm (0.134 in)
B: 1.2 mm (0.047 in)
Page 19 of 25
Rotate the rings in their grooves to make sure they do not bind.
Position the ring end gaps as shown.
Position the piston/connecting rod assembly with the arrow facing the timing belt side of the engine block.
Set the piston in the ring compressor, and position it in the cylinder.
Page 20 of 25
Set the ring compressor on the piston bore, then push the piston in with your hands.
Stop after the ring compressor pops free, and check the connecting rod-to-rod journal alignment before pushing the
piston into place.
Before installing the rod bolts, measure the diameter of each connecting rod bolt at point A and point B.
Calculate the difference in diameter between point A and point B.
Point A-Point B = Difference in Diameter.
Difference in Diameter Specification:
0-0.1 mm (0-0.004 in)
Page 21 of 25
If the difference in diameter is out of tolerance, replace the connecting rod bolt.
Install the connecting rod bearing, then line up the mark on the connecting rod and the rod cap.
Apply new engine oil to the bolt threads and flanges. Torque the bolts to 20 N·m (15 lb·ft).
Tighten the connecting rod bolt an additional 90°.
NOTE: Remove the connecting rod bolt if you tightened it beyond the specified angle, and inspect the connecting
rod bolt. Do not loosen it back to the specified angle.
Page 22 of 25
Install the engine oil strainer and baffle plate.
Install all removed parts according to the service information.
SHORT BLOCK REPLACEMENT
NOTE: When you replace the short block, do not replace the pistons or rings; the new block already has the countermeasured pistons and rings installed.
With the vehicle lowered on the rack, remove/disconnect any remaining hoses, connectors, and components, including
the oil filter base/oil filter assembly, so you can remove the short block with an engine hoist.
Raise the vehicle.
Remove the lower transmission housing bolts, the drive plate bolts, axle bearing support, and any other brackets and
bolts that secure the transmission to the short block.
Page 23 of 25
Lower the vehicle, loosen the remaining trans/block bolts, and remove the front and rear engine mount bolts. Support
the transmission with a floor jack and rubber block under the transmission bell housing area. Set up an engine hoist with
a sling to remove the short block up and out of the engine compartment.
NOTE: You will not completely remove the block/trans bolts until the engine is secured with the hoist.
Remove the upper transmission housing bolts and two of the front engine/transmission mount bolts, then begin to
separate the short block from the transmission.
Lift the short block assembly from the vehicle, and place the assembly on a work bench or other suitable surface.
NOTE: The rear engine mount bracket can remain bolted to the block while it is being lifted out. As the block is lifted it
might need to rotate approximately 90 degrees so the bracket can clear the front and rear cowl. This rear bracket can
be transferred to the new block before hoisting it back in. MDX is unable to be lifted with the rear mount attached to the
engine. This will have to be removed prior to lifting the engine out.
Page 24 of 25
Transfer all remaining components from the original block to the new block and then carefully hoist the new short block
assembly into the vehicle.
NOTE: Installation of the short block with the cylinder heads attached to the short block will not allow for proper
clearance. The cylinder heads must be installed after the short block is installed in the engine compartment. Make sure
all bolt holes are clean before installing the short block.
Install all removed parts according to the service information, and refill all fluids.
END
Page 25 of 25