Subaru 1600 Service Manual page 116

ENGINE
Trouble and possible cause
Corrective action
2) Loose oil pan attaching bolts or
Tighten or replace.
defective oil pan gasket
3) Loose oil pump attaching bolts or Tighten or replace.
defective oil pump gasket
4) Defective oil filler sealing
Replace.
5)
Defective crankshaft oil seals Replace.
6)
Defective rocker cover gasket Replace.
2. Oil enters
1) Improper piston ring gap
Replace.
combustion
chamber 2) Worn or damaged piston ring, cyl- Replace.
past piston inder, piston
ring.
3. Oil enters com- 1) Worn or damaged intake valve oil seal Replace.
bustion cham-
ber through 2) Excessive clearance between valve Replace.
valve stem-to- stem and guide
guide clearance.
8. Excessive fuel 1. Defective igni- 1) Improper ignition timing
Adjust.
consumption
tion system
2) Defective spark plug
• Improper spark plug gap
Adjust.
• Fouled spark plug Clean or replace.
• Defective insulator Replace.
3) Defective cord or wiring
•
Loose and/or damaged contacts of Inspect, repair or replace.
ignition system connection
•
Defective cords or wires Replace.
4) Others
See "Troubleshooting" in
Chapter IS.
2. Defective fuel
1) Improper idle speed
Adjust
and air intake
system 2) Clogged air cleaner element Replace.
3) Defective cord, wiring or vacuum line
• Improper float level
Adjust.
• Loose main jet or clogged main
Tighten, clean or replace.
air bleed
• Clogged vacuum pipe or disconnect- Check or replace pipe.
ed hose
• 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) Malfunction of ECC system Refer to Chapter S.