Daihatsu F300 Service Manual page 1384

EFISYSTEM
(Con!' d)
•
Checking spark plugs
BAD
Spark plugs
I
(See page IG 12.)
1. lnjector(s)- Shorted or leaking
All
spark!
2. Injector wiring(s) between ECU and injectors
OK
plug
are wet.
Checking compression pressure
I
1. Valve clearances {hot)
{See
page
EM-29.)
I
BAD
(See page EM-16.)
OK
2. Piston rings, cylinder bores and pistons worn
3.
Gasket blown out
4.
Valves malfunctioning
5.
Poor valve seating
Check fuel pressure.
I
1. Fuel pump
•
(See page EF-77.)
I BAD
2. Fuel filter
OK
3.
Fuel pressure regulator
(See page EF-92.)
Check fuel flow rate.
I I
1. Fuel pump
(See
page
EF-79.)
I
BAD I
2.
Fuel filter
OK
Check injector operating sound.
I I
1. Injector wiring(s) between ECU and injector
(See page EF-97.) I
BAD
I 2. Injector
OK
Injection condition/leakage
Check injector fuel flow rate
BAD
Injector
(See page EF-99.)
OK
Check EFI electronic circuit, using voltfohm meter
I
1. Power to ECU
•
(See page EF-35.)
I
BAD
(1) Fusible link
(2) Fuses
(3) Main Relay
2.
Pressure sensor
3.
Water temperature sensor
4. Intake air temperature sensor
•
EF-16