Toyota Land Cruiser 1988 Repair Manual page 150

EFI SYSTEM -Troubleshooting Fl-19
SYMPTOM- ENGINE HESITATES AND/OR POOR ACCELERATION
CHECK BRAKES
I
BAD I
Brakes - Drag
~OK
CHECK FOR VACUUM LEAKS IN AIR
1. Oil filler cap
INTAKE LINE
BAD
2. Oil dipstick
3. Hose connections
4. PCV hose(s)
5. EG R system - EG R valve stays open
!
OK
CHECK AIR FILTER ELEMENT
1
Element - Clean or replace
BAD
~OK
CHECK DIAGNOSIS SYSTEM Diagnostic code(s) (See pages Fl-24, 25)
Check for output of diagnostic code. Malfunction
(See page Fl-21)
code(s)
~
Normal code
CHECK IGNITION SPARK 1. High-tension cords
(See page IG-5) BAD 2. Distributor
3. Ignition coil
4. Igniter
JOK
CHECK IGNITION TIMING Ignition timing- Adjust (See page IG-11)
1. Short terminals TE1 and E1 of the NO
check connector.
2. Check ignition timing.
Standard:
7o BTDC @ idle
(w I short circuited
TE1 and E1)
toK
CHECK FUEL PRESSURE 1. Fuel pump (See page Fl-46)
(See page Fl-47) BAD 2. Fuel filter
3. Fuel pressure regulator (See page Fl-55)
~OK
CHECK INJECTORS Injection condition
(See page Fl-57)
BAD
l OK CONTINUED ON PAGE Fl-20