Classification:

Reference:

Date:

EM19-005

ITB19-016

July 22, 2019

2017-2018 QX80; ENGINE KNOCK OR TICK NOISE

APPLIED VEHICLE: 2017-2018 QX80 (Z62)

IF YOU CONFIRM
A knock or tick noise is coming from the engine
Or
The customer states a knock or tick noise is heard from the engine area.

ACTION
Refer to REPAIR OVERVIEW on page 3.

IMPORTANT: The purpose of ACTION (above) is to give you a quick idea of the work you will be performing.
You MUST closely follow the entire REPAIR OVERVIEW as it contains information that is essential to
successfully completing this repair.
Infiniti Bulletins are intended for use by qualified technicians, not 'do-it-yourselfers'. Qualified technicians are properly trained
individuals who have the equipment, tools, safety instruction, and know-how to do a job properly and safely. NOTE: If you believe that
a described condition may apply to a particular vehicle, DO NOT assume that it does. See your Infiniti retailer to determine if this
applies to your vehicle.

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ESSENTIAL TOOL

Tech Cam J-51951

Lens swab J-51963
(not part of J-51951)

Figure 1

Additional Tech Cam J-51951 kits and components are available from Tech•Mate: 1-800-662-2001, or
nissantechmate.com.

2/9

ITB19-016

REPAIR OVERVIEW
A knock or tick noise is
heard from the engine
area

2017 QX80

2018 QX80

Perform the
service procedure in
ITB17-052
(if not already done)

Remove the # 7
spark plug
Inspect the cylinder wall
for scuffing

Has the noise stopped?
Yes

No

Is the cylinder wall
scuffed?
(see Figures 2-4
Fi
4
No
Yes

STOP HERE
(This bulletin
does not apply)

Replace the short
engine assembly
See page 7 for
warranty information

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Go to CLAIMS
INFORMATION for
cylinder inspection
Refer to ASIST/ESM
for further diagnosis

ITB19-016

SERVICE PROCEDURE
Inspect Cylinder Wall
1.

For 2018 QX80, proceed to step 2. For 2017 QX80, refer to ITB17-052 first:


If ITB17-052 has been performed, skip to step 2.



If ITB17-052 has not been performed, do so now.
 If the incident has been resolved (knock/tick noise has stopped) after performing ITB17-052,
STOP HERE. This bulletin does not apply.
 If the incident has not been resolved after performing ITB17-052, go to step 2.

2.

Remove the # 7 spark plug.
 For spark plug removal, refer to the Electronic Service Manual (ESM), section ENGINE >
ENGINE MECHANICAL > PERIODIC MAINTENANCE > SPARK PLUG > Removal and
Installation.

3.

Using Essential Tool Tech Cam J-51951, visually inspect the # 7 cylinder wall for scuffing.


If the cylinder wall has scuffing, replace the short engine assembly.
 Refer to Figures 3 and 4 on page 5 for examples of cylinder wall scuffing.
 See page 7 for warranty information.
 Refer to the appropriate section of the ESM for short engine assembly replacement.




See page 6 for additional short engine assembly replacement instructions.

If there is no scuffing on the cylinder wall, go to CLAIMS INFORMATION (for the “inspection” OP
CODE). Refer to the ESM for further diagnosis.
 Refer to Figure 2 on page 5 for an example of an “OK” cylinder wall.

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ITB19-016

Cylinder hone
cross hatch

OK

Figure 2

Piston

NG

NG
Cylinder wall
scuffing

Pistons

Figure 3

Figure 4

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ITB19-016

Oil Jet Installation:


Install the “short” oil jet on Bank 2 (B2) side, and the “long” oil jet on Bank 1 (B1) side (see Figure 5 and
Figure 6).
 The vertical mark should be 90° +/- 10° to the horizontal line, while the cutouts face to the upper
inward direction.
 Using a suitable tool such as a small ball peen hammer or brass hammer, tap in the oil jet until it is
fully seated (see Figure 6).
 Sealant is not needed.

B2 side
10°

B1 side

10°
10°

Cutout

Cutout

Vertical mark on
“short” oil jet
(# 13081-AR000)

Vertical mark on
“long” oil jet:
(# 13081-AR010)

Crankshaft
snout

Horizontal
line

10°

Horizontal
line

90°

90°

Figure 5

NG

OK

Gap

Fully
seated

Oil jet

Oil jet

Figure 6

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Engine
Block

ITB19-016

Warranty Related Information When Replacing Short Engine Assembly
4.

5.

Record a continuous video (15 seconds or less) of the area(s) of the cylinder wall that indicates a failed
inspection and the Vehicle Identification Number (VIN) on the F.M.V.S.S. certification label (VIN label).


Use tool Tech Cam J-51951 as needed (see page 2).



Make sure the continuous video has a clear image of the incident area(s) of the damaged cylinder
wall and the VIN on the VIN label.



The Powertrain Call Center (PCC) may require a live “Tech Cam” session.

Complete the PCC Preauthorization Form in ASIST.


See the pre-selection screen below.

Fill out these two lines,
select “Engine”,
and then select Next

Figure 7
6.

Attach the video and parts list to the Preauthorization Form.

7.

After submitting the Preauthorization Form with the attached video and parts list, call the PCC at
800-973-9992 (opt 1) for repair pre-approval to replace:


The short engine assembly (with oil and oil filter, coolant, etc).

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ITB19-016

PARTS INFORMATION

(1)

DESCRIPTION

PART NUMBER

QUANTITY

NUT

14094-9BA0A

16

BOLT

14069-JD00A

8

GASKET-MANIFOLD TO CYLINDER HEAD

14035-1LA0A

8

WASHER