Nilfisk-Advance Advance Retriever 2060 Service Manual page 157

' , $ * 1 2 6 7 , & 3 5 2 & ( ' 8 5 ( 6
NO
See lock-off
diagnosis
Repair
wiring or
voltage
source
NO
NO
12V at
injector?
YES
Check
ground or
replace ECU
NO
Start
Engine
ZENITH FUEL SYSTEMS,
NO
Fuel level ?
YES
Momentary
fuel pressure
when key is
on?
YES
NO
Fuel
pressure
w/ crank?
YES
Injector
light
flashes?
YES
NO
Injector
sprays?
YES
Injector
leaks?
YES
Replace
injector or
o-rings
( Q J L Q H Z R Q · W V W D U W ² / 3 *
Add
fuel
Correct ignition
system.
Repair or
replace ECU
YES
NO
Tach.
signal
to ECU?
Adjust or
replace
regulator
NO
YES
primary reg.
pressure
28 psi?
Repair
wiring or
CKP sensor
Adjust or
replace
regulator
NO
Secondary
reg. pressure
24 psi ?
YES
Replace
injector
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