Nissan Sentra Service Manual: Evap leak check
Inspection
CAUTION:
- Do not use compressed air or a high pressure pump.
- Do not exceed 4.12 kPa (0.042 kg/cm2, 0.6 psi) of pressure in EVAP
system.
NOTE:
- Do not start engine.
- Improper installation of EVAP service port adapter [commercial
service tool: (J-41413-OBD)] to the EVAP
service port may cause a leak.
1.EVAP LEAK CHECK
With CONSULT
- Install EVAP service port adapter [commercial service tool: (J-
41413-OBD)] and pressure pump to EVAP service port.

- Turn ignition switch ON.
- Select the “EVAP SYSTEM CLOSE” in “WORK SUPPORT” mode of “ENGINE” using
CONSULT.
- Touch “START”. A bar graph (Pressure indicating display) will appear on
the screen.
- Apply positive pressure to the EVAP system until the pressure indicator
reaches the middle of the bar
graph.
- Remove EVAP service port adapter [commercial service tool:
(J-41413-OBD)] and hose with pressure
pump.
- Locate the leak using a leak detector [commercial service tool:
(J-41416)]. Refer to EC-49, "EVAPORATIVE EMISSION SYSTEM
: System Description".

Without CONSULT
- Install EVAP service port adapter [commercial service tool: (J-
41413-OBD)] and pressure pump to EVAP service port.

- Apply battery voltage between the terminals of EVAP canister vent
control valve to make a closed EVAP
system.
- To locate the leak, deliver positive pressure to the EVAP system until
pressure gauge points reach 1.38 to
2.76 kPa (0.014 to 0.028 kg/cm2, 0.2 to 0.4 psi).
- Remove EVAP service port adapter [commercial service tool:
(J-41413-OBD)] and hose with pressure
pump.
- Locate the leak using a leak detector [commercial service tool:
(J-41416)]. Refer to EC-49, "EVAPORATIVE EMISSION SYSTEM
: System Description".
>> INSPECTION END

Inspection
EVAP CANISTER
1.CHECK EVAP CANISTER
Block port (B).
Blow air into port (A) and check that it flows freely out of port (C).
Release blocked port (B).
Apply vacuum pressure to por ...
Inspection
1.CHECK PCV VALVE
With engine running at idle, remove PCV valve from rocker cover. A
properly working valve makes a hissing noise as air passes through
it. A strong vacuum should be fel ...
Other materials:
Hoses
HOSE REMOVAL AND INSTALLATION
To prevent damage to
rubber hose, do not pry off rubber hose with
tapered tool or screwdriver.
To reinstall the
rubber hose securely, make sure that hose insertion
length and orientation is correct. (If tube is equipped with hose ...
Camshaft valve clearance
Inspection and Adjustment
INSPECTION
Perform inspection after removal, installation or replacement of camshaft or
valve-related parts, or if there are
unusual engine conditions regarding valve clearance.
Remove rocker cover. Refer to EM-46, "Exploded View".
Measure the valve cle ...
Dlc branch line circuit
Diagnosis procedure
1.Check connector
Turn the ignition switch off.
Disconnect the battery cable from the negative terminal.
Check the terminals and connectors of the data link connector for
damage, bend and loose connection
(connector side and harness side).
Is the inspection resul ...
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