
SYMPTOM — ENGINE HESITATES AND/OR POOR ACCELERATION
CHECK CLUTCH AND BRAKE
BAD
1. Clutch — Slips
2. Brakes — Drag
OK
CHECK FOR VACUUM LEAKS IN AIR
INTAKE LINE
BAD
1. Oil filler cap
2. Oil dipstick
3. Hose connections
4. PCV Hoses
5. EGR system — EGR valve system open
OK
CHECK AIR FILTER ELEMENT
BAD
Element — Clean or replace
OK
CHECK DIAGNOSIS SYSTEM
Check for output of diagnostic code.
(See page FI-23)
Malfunction
code(s)
Diagnostic code(s) (See page FI-26)
Normal code
CHECK IGNITION SPARK
7M-GE
(See page IG-5)
7M-GTE
(See page IG-10)
BAD
1. High tension cords
2. Distributor (7M-GE) or cam position
sensor (7M-GTE)
3. Ignition coil
4. Igniter
OK
CHECK IGNITION TIMING
1. Connect terminals TE1 and E1 of the
check connector.
2. Check ignition timing.
STD: 10° BTDC @ idle
[w/ connect terminals TE1 and E1]
NO
Adjust ignition timing (See page IG-20)
OK
CHECK FUEL PRESSURE
(See page FI-71)
BAD
1. Fuel pump (See page FI-70)
2. Fuel filter
3. Fuel pressure regulator (See page FI-81)
OK
CHECK INJECTORS
(See page FI-83)
BAD
Injection condition
OK
CONTINUED ON PAGE FI-22