Land Rover Fuel Injection System Manual

r-t19 FUEL INJECTION SYSTEM-.- - -.wII
MT PROCEDURERESULTS - Check cables and units shown in bold
13.Check air bypass valve - Part IOhm-meter reading of 48-58 Ohms -
Proceed to Test 14
Incorrect reading
Check:-
13
IGNlTtON OFF
RR1828E
ITEST PROCEDURE
14.Check air bypass valve - Part 2
0
-
I3-IGNITION 
OFFRESULTS 
- Check cables and units shown in bold
Ohm-meter reading of 
48-58 Ohms -Proceed to Test 15
I
Incorrect reading
ICheck:-
‘.16Y. .,‘.*::, ‘.REVISED: APR. 88 

.
KHNCIt 1987
ROVERFUEL INJECTION SYSTEM 119 1..1RESULTS 
- Check cables and units shown in bold
Ohm-meter reading of 
5000 Ohms -Proceed to Test 16Incorrect reading of Infinity
Check:-
[EST PROCEDURE
15.Check throttle potentiometer - Part 1
15
u3NIlloN OfT
RA1830E
rEST PROCEDURE
16.Check throttle potentiometer - Part 2RESULTS 
- Check cables and units shown in bold
Correct voltmeter 
readings-
Proceed to Test 17
ThrottleThrottle
closedopen0.29 
)( 4.6 Volts
)smooth (
)__....__...___________(0.36 )swing(...

RANGE
19 FUEL INJECTION SYSTEM“*’ ROVER
‘EST PROCEDURE
17.Check ou~pul ofAirflow sensor
RESULTS . Check cables and units shown in bold
Voltmeter reading of 0.3-0.6 volts-
Proceed to Test 18
Incorrect voltmeter reading
Check:--
IGNITION ONw
PRECAUTION:Depressurize the fuel system when fitting the fuel pressure gauge ordisconnecting/replacing fuel system
components.
CAUTION: Thoroughly clean the immediate area around the fuel filter and hose connections before
disconnecting the fuel feed line from the...

,’‘.’
:;
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‘..(. ‘.FUEL 
INIECTION SYSTEM 119 1NOTE: Insert the pressure
gauge in the fuel feed line
immediately after the fuel
line filter. The filter is
located beneath the right
hand rear wheel arch attached
to the chassis
(34.0-37.0 p.s.i.)
(6)Pressure drop-max 0.7 kgflcm’(IO p.s.9 in one minute
IGMTION OFF
1R1833EContinued19 

RANGE
FUEL INJECTION SYSTEMlg8’ ROVER
EST PROCEDURERESULTS - Check cables and units shown in bold
9.Check for leaking injectorWARNING: Ensure that allnecessary precautions are takenNOTE: Before removing any
of the injectors, remove and
examine the spark plugs.
check for 
consistenlcolouration of plugs.
A leaking injector will
result in the appropriate
spark plug being ‘sooted up’.IO prevent fire and explosion.
Replace any injector which leaks
more than 2 drops of fuel per minute.
Remove all injectors...

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;
rot;; 1987
FUEL INJECTION SYSTEM
rEST PROCEDURE
!O.Check for injector operation
Left bank injectors 1,3,5,7
20\
rEST PROCEDURE
11.Right bank injectors 2,4,6,6
IGNITION ONRESULTS 
- Check cables and units shown in bold
WARNING: Ensure that 
allnecessary precautions are takenIO prevent fire and explosion.
Repeat test for other injectors
Replace any injector which does not
operate.
NOTE: Fuel flow is 
167cc minimum
per minute per 
injeclorRESULTS 
- Check cables and units shown in bold
WARNING:...

:.
‘.‘.:.
‘: .,:.
‘. .’ ,‘:
RANGEFUEL INJECTIONSYSTEM
lg8’ ROVER
‘EST PROCEDURE
!2.Check gear switch inputRESULTS 
- Check cables and units shown in bold
Voltmeter reading of zero 
volts-Neutral and park
Voltmeter reading of 
4.5-5.0 Volts-R.D.3.2.1 - Proceed to Test 23
Incorrect reading
Check:
1otw10r-d ON
RR1837E22
.
. . .‘

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ro7;; 1987
FUEL INJECTION SYSTEM Ii9 1
‘_’
,,,‘EST PROCEDURE
:3.Check road speed inputRESULTS 
- Check cables and units shown in bold
Voltmeter reading of 0 to 12V fluctuating 6 times per
revolution 
- Proceed to Test 24
NOTE: Raise and rotate the left hand
rear road wheel slowly
Incorrect reading
Check:
IGNITCON ON
RR1838E
rEST PROCEDURE
24.Check Lambda sensor heater coils
NOTE: Remove pump relay from its 
conneclorRESULTS . Check cables and 
unils shown...

FUEL INJECrlONSYSTEM
ENGINE TUNING PROCEDURE
Before carrying out ‘Engine Tuning’ on fuel injection
vehicles, it is important that all other engine relatedsetting procedures are undertaken first; air flow
sensor to air cleaner correctly fitted, ignition and
throttle potentiometer 
correcty set; all hoses
correctly fitted and secured.
These checks should be carried out with the enginecoolant temperature beween 80” to 95°C (176” to
203°F).CHECK AND ADJUST IGNITION TIMING
1. Check that ignition timing is at...

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yo;;; 1987
FUEL INJECTION SYSTEM 119 1
.:
AIR CLEANERRemove and Refit
Removing
1.
2.
3.4.
5.
7.
8.
9.
. .
“.Release the two clamps securing the air
cleaner to the airflow sensor.
Release the two nuts and bolts securing the air
cleaner to the left hand valance mounting
bracket.
Detach the airflow sensor from the air cleaner,
and lay carefully to one side.
Detach the air cleaner from the centre
mounting...