Toyota Celica Supra 1986 Service And Repair Manual page 122

Fl-20
EFI SYSTEM - Troubleshooting
SYMPTOM - ENGINE HESITATES AND/ OR POOR ACCELERATION
CHECK ClUTCH AND BRAKE
1. Clutch - slips
BAD
2.
Brakes - drag
OK
CHECK FOR VACUUM lEAKS IN AIR
1.
Oil filler cap
INTAKE LINE
BAD 2. 011
level gauge
3. Hose connections
4 .
PCV hoses
5. EGR system - EGR valve stays open
OK
CHECK AIR Fll TEA ElEMENT
BAD
Clean or replace
OK
CHECK DIAGNOSIS SYSTEM
Diagnostic code(sl (See page Fl-251
Check f or ootput of diagnostic code.
Malfunction
(See page F1·221
code lsi
Normal code
CHECK IGNITION SPARK
1.
Plug wires
1. Unplug connectors of iniector resist or
BAD
2.
High·tftnsion cords
and start injection tim& switch.
3.
Distributor
2.
Check by holding spark plug w ire
4 .
Ignition coil, igniter
8 - 10 mm (0.31 - 0 .39 in. I away
from engine block while engine cranking.
A strong spark should be noted .
•
OK
CHECK IGNITION TIMING
lgnitoon system !See page lG·21
1.
Shon both terminals of the
NO
check connector.
2. Check Ignition timing.
STD:
10°
BTDC
(w /thort terrrinalo of the
check connector)
OK CONTINUED ON PAGE
F1·21