Subaru 1600 Service Manual page 113

ENGINE
Trouble and possible cause
Corrective action
6)
Defective distributor
• Cap troubles (cracked cap, damaged Clean or replace.
or corroded cord contacts, etc.)
• Malfunction of operating parts Repair or replace
(vacuum advance, centrifugal
advance mechanism, etc.)
• Improper air gap or defective pick Adjust or replace.
up coil.
7) Defective ignition control system.
• Clogged vacuum lines
Inspect, repair or replace.
• Malfunction of operating parts
Replace.
(Thermo vacuum valve I, check
valve etc.)
2. Defective fuel I) Improper idle speed. Adjust.
and air intake
system 2) Clogged air cleaner element
Replace.
3)
Defective carburetor
• Improper float level
Adjust.
• Malfunction of choke system
Adjust, repair or replace.
• Plugged jets or air bleeds
Clean or replace.
• Malfunction of antidieseling switch
Repair or replace.
(Hitachi carburetor) or idle stop
solenoid (C-W carburetor) or defec-
tive wire connection
• Defective metering rod (C-W Repair or replace.
carburetor)
!
• Others
See "Troubleshooting of carburetor"
in Chapter 4.
4) Defective fuel pump, filter, delivery
See "Troubleshooting of fuel system"
line, etc.
in Chapter 4.
S) Vacuum leaks
• Leakage from vacuum lin!:s Inspect, repair or replace.
• Loose intake manifold bolts or Tighten or replace.
defective gasket.
• Loose carburetor nuts or defective Tighten or replace.
gasket
• Defective EG R valve, PCV valve,
Replace.
6) Malfunction of fuel feed system.
Adjust, repair or replace.
7) Malfunction of ECC system.
Refer to Chapter S.
3. Insufficient
i
I)
Improper valve clearance
• AdjUSt.
engine com-
pression pres-
I
2) Loose spark plug or defective gasket
Tighten or replace.
sure
3) Loose cylinder head nuts or defective Tighten or replace.
head gasket
4) Defective valve seat contact Resurface valve and valve seat.
S) Seizure of valve stem Repair or replace.
I
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