fuel filter NISSAN GT-R 1998 Service Manual

TROUBLE DIAGNOSES t i
CONSULT (Cont'd) i
FUNCTION TEST MODE
CHECK ITEM (REMEDY)
FUNCTION
TEST
ITEM JUDGEMENT
CONDITION
lgnition switch: ON
(Engine stopped)
Displays the results of on board
diagnostic system.
SELF-DIAG
RESULTS Objective
system
--
ignition switch: ON
(Engine stopped)
Throttle position sensor circuit is
tested when throttle is opened and
closed fully. ("IDLE POSITION" is
the test item name for the vehicles
in which idle is selected by throttle
position sensor.) Harness and connector
Throttle position sensor (Closed
throttle position)
Throttle position sensor (Closed
throttle position) adjustment
Throttle linkage
Venfy operation in DATA
MONITOR mode.
Throttle
valve:
opened OFF
ON
CLOSED THROTTLE
POSl Throttle valve:
closed
lgnition switch: ON
(Engine stopped)
Throttle position sensor circuit is
tested when throttle is opened and
closed fully.
Harness and connector
Throttle position sensor
Throttle position sensor
adjustment
Throttle linkage
Verify operation in DATA
MONITOR mode.
Range
(Throttle
valve fully opened
- Throttle valve
fully closed) More
than 3.0V THROTTLE POSl
SEN CKT
lgnition switch: ON
(Engine stopped)
Neutral position switch circuit is
tested when shift lever is
manipulated.
lgnition switch: ON
(Engine stopped)
Fuel pump circuit is tested by
checking the pulsation in fuel
pressure when fuel tube is
pinched. Out of
N/P
positions OFF
Harness
and connector
Neutral position switch
Linkage adjustment
PARWNEUT POSl SW CKT
In
N/P positions
Harness and connector
Fuel pump
Fuel pump relay
Fuel filter clogging
Fuel level
There
is pressure pulsation on
the fuel feed hose.
FUEL PUMP
CIRCUIT
--
The valve timing control system is
diagnosed by checking for
operating sound of the solenoid
valve.
lgnition switch: ON
(Engine stopped)
Cooling fan circuit is tested when
cooling fan is rotated.
VALVE
TIMING
SN
CKT
Harness and connector
Cooling fan motor
Cooling fan relay
COOLING
FAN
CIRCUIT RB25DE, RB25DET
The cooling fan rotates and
stops every
3 seconds.
lgnition switch: ON -+ START
Start signal circuit is tested when
engine is started by operating the
starter. Battery voltage and water
temperature before cranking, and
average battery voltage, mass air
flow sensor output voltage and
cranking speed during cranking
are displayed.
Harness and connector
lgnition switch
START
SIGNAL
CIRCUIT Start
signal: OFF 3 ON

TROUBLE DIAGNOSES
Fuel Pressure Inspection
Fuel pump fuse
Pressure hose
QUICK
INSPECTION
0 Turn ignition switch ON (engine not running).
Select "FUEL PUMP CIRCUIT' in "FUNCTION TEST
mode.
Pinch fuel hose with fingers and check for pulsation.
Pinch fuel hose between fuel filter and fuel gallery (fue
@ damper for RB2SDET model) with fingers while fuel puml
is operating. Hose should feel hard or pulsating.
INSPECTION USING FUEL PRESSURE GAUGE
Releasing fuel pressure
Start engine.
Select "FUEL PRESSURE RELEASE" in "WORK SUP
PORT' mode.
Touch "START' and after engine stalls, crank it two o
three times to release all fuel pressure.
Start engine and disconnect fuel pump fuse.
After engine stalls, crank it two or three times to releas
all fuel pressure.
Installing fuel pressure gauge
Connect a fuel pressure gauge between fuel filter and fue
gallery (fuel damper for
RB25DET model).
CAUTION:
When disconnecting fuel hose, use shop cloth to remove an!
fuel leaks.
Install fuel pump fuse.
Fuel pressure standard value confirmation
Start engine and check that the fuel pressure is as specified.
Fuel pressure [MPa (kg/cm2)]
At idle: 0.25 (2.5)
When vacuum hose is disconnected from pres-
sure regulator:
0.29 (3.0)
If the vehicle shows poor starting, check fuel pressure fo
approx.
5 seconds after ignition switch is turned ON (During :
sec. after ignition switch turned ON for RB25DET model).
Fuel pressure [MPa (kg/cm2)]
During 5 sec. after ignition switch turned ON:
0.29 (3.0)
When fuel pressure is NG
Too high: Malfunctioning pressure regulator, malfunction in^
fuel damper, clogged fuel return line, bent hose
Too low: Malfunctioning pressure regulator, malfunctioning fue
damper, poor fuel pump discharging, clogged fuel supply line
clogged fuel filter
CAUTION:
Also check fuel pressure at increased engine speed.

ENGINE MECHANICAL I RB~ODE (UB) ]
STANDARD AND REPAIR LIMIT
Firing order I 1-5-3-6-2-4
Compression pressure
MPa
(kg/cm2)/rpm
Distortion limit mm
- - -- --- - Ignition advance device
Electronically-controlled ignition advance
Engine
oil capacity
e
Spark plug standard
Limit
. Limit
of variation between cylinders
Intake manifold
Intake manifold collector
Exhaust manifold
Cylinder head
Cvlinder block
lgnition timing (during no feed back control) 1.23
(1 2%)/300
0.93 (9.5)1300
0.1 (1.0)/300
0.1 0.1
0.3
0.2
0.1
Without filter
With filter
MakerlTypeISpark
plug gap mm
Engine idling speed
W'
Idle base speed (during no feed back control)
rPm
Density of
COIHC at idling speed
Wppm Approx.
3.8
Approx. 4.2
NG WPFR5G-11 11.0
- 1
-1
650-.50
(N or P position for
A/T)
600 (N or P position for AlT)
Less than O.l/Less than 50
I New I Used I Limit
Valve
clearance
(INTIEXH)
mm
Deflection
amount of accessory V-belt
Measured with tension gauge
N (kg) Hot
engine
.
Cold engine (at ambient temperature)
Measured by pushing at 98 N (10 kg)
mm 0.36+0.062/0.53+0.062
0.31 1~,0.04/0.50i0.04
Fuel tank capacity
e
Engine coolant total capacity [with reservoir tank (max. level)] e
Thermostat opening temperature [start to open - full open]
"C
Radiator cap opening pressure
MPa (kg/cm2) Approx.
65
Approx. 9.4 82 - 95
0.06
- 0.1 0 (0.6 - 1 .O)
A/C compressor belt
Power
steering pump belt
Fan belt
Power steering pump belt
1 8-10 1 10-12 1 16
667
- 755
(68
- 77)
A/C compressor belt 1 6-8 1 7-9 / 12
Fan belt
1 3-5 1 4-6 1 7.5
559 - 637
(57
- 65)
SEC.117 Power steering
Fan belt pump be1 t
284 (29)

ENGINE MECHANICAL
STANDARD AND REPAIR LIMIT
Firing order
Compression pressure
MPa (kg/cm2)/rpm
-
Intake manifold
Intake manifold collector
--- - Standard Limit
Limit of variation between
cylinders
0.1
0.1
Distortion limit mm
Engine oil capacity
P
Spark plug
Deflection amount of accessory
V-belt Power steering pump
belt
I
- -- - - 1.26 (1 2.8)/300
0.96 (9.8)/300
0.1
(1 .OY300
Measured with tension gauge Exhaust
manifold
Cylinder head
Cylinder block
Without filter
With filter
MakerKype/Spark
plug gap
mrn
I "
650.-50 (N or P position for CVT)
600 (N or P position for AIT)
Less than O.l/Less than 50
15U600
0.36~0.06210.53~0.062
0.31 -.0.04/0.50~0.04
Approx. 65
Approx. 9.4
82 - 95
0.06 - 0.10 (0.6 - 1 .O)
"
Engine idling speed rpm
Idle base speed (during no feed back control)
rpm
Density of
COIHC at idling speed
%/ppm
Ignition timing (during no feed back control)
BTDCO/rpm
I NC compressor err
0.3
0.2
0.1
Approx. 3.8
Approx. 4.2
NGWPFR5G-11/1.0
- 1.1
lanition
advance device
1
Valve clearance (INTIEXH) mm
(kg)
/ Fan belt Electronicallv-controlled
ianition
advance
Hot engine
Cold engine (at ambient temperature)
I power steerina DU~D belt 1 8-10
Fuel tank capacity
Q
Engine
coolant total capacity [with reservoir tank (max. level)] e
Thermostat opening temperature [start to open - full open] OC
Radiator cap opening pressure
MPa (kg/crn2)
,
I Fan belt 1 3-5
Measured
by pushing at 98
N (10 kg)
mm
I SEC.! I7 Power steering I
*I I 1
AK compressor belt 1 6-8
Fan belt pump beit
Used 1 Limit

ENGINE MECHANICAL
STANDARD AND REPAIR LIMIT
Distortion limit mm
- - Intake manifold
Intake manifold collector
1 -5-3-6-2-4
1.20 (1
2.2)/300
0.90 (9.2)/300
0.1 (1.0)/300
Firing order
-- - 0.1
0.1
- -- - ( Cylinder block 0.1
Compression
pressure
MPa
(kg/cm2)/rpm
Exhaust manifold
Cvlinder head
Engine oil capacity Standard
Limit
-
Limit of variation between cylinders
0.3
0.2
- - -- - Spark plug I ~akerfl~~e/~~ark plug gap mm r NGKPFRGG-11/1.0 - 1.1
Without
filter
'with
filter
ignition advance device
I Electronically-controlled ignition advance
Approx.
3.9
Aoorox.
4.3
Engine idling speed
rPm
Idle
base speed (during no feed back control)
Pm
650-e50
(N or P position for
A/T)
600 (N or P position for AQ
Density of COIHC at idling speed
Wppm
Ignition timing (during no feed back control)
BTDCO/rpm Less
thanbl~ess than 50
15dY600
Valve clearance
(INT/EXH) mm
Deflection amount of accessory V-belt Hot
engine
Cold engine (at ambient temperature)
Measured
with tension gauge
(kg)
I
SEC.117 Power steering
Fan belt pump belt
0.36+0.062/0.53i0.062
0.3
1 20 .04/0.50a0.04
Fuel tank capacity
4
Engine coolant total capacity [with reservoir tank (max. level)] t
Thermostat opening temperature [start to open - full open]
OC
Radiator cap opening pressure
MPa (kg/cm2)
Power steering pump belt
Measured by pushing at 98
N (1 0 kg)
mm Approx.
65
Approx. 9.4
82
- 95
0.06
- 0.1 0 (0.6 - 1 .O)
New 1 Used 1 Limit
AfC
compressor belt
Fan belt
,
667 - 755
(68
- 77)
Power steering pump belt
' AfC compressor belt
Fan belt
559 - 637 284 (29)
(57 - 65)
667
- 755
(68
- 77)
667
- 755
(68
- 77)
559 - 637 284 (29)
(57 - 65)
559 - 637 284 (29) (57 - 65)
8-
10
6-8
3 - 5
- 10 - 12 16
7-9 12
4
- 6 7.5