Toyota 4A-FE Repair Manual page 28

:M-6
Problem
Engine overheats
I
Problem
Engine will not crank
or cranks slowly
Engine will not start/
hard to start
(cranks OK)
ENGINE MECHANICAL - Troubleshooting (4A-FE)
TROUBLESHOOTING (4A-FE)
ENGINE OVERHEATING
Possible cause
Remedy
Cooling system faulty Troubleshoot cooling system
Incorrect ignition timing
Reset timing
HARD STARTING
Possible cause Remedy
Starting system faulty Troubleshoot starting system
No fuel supply to carburetor Troubleshoot EFI system
• No fuel in tank
• Fuel pump not working
• Fuel line clogged or leaking
EFI system problems Repair as necessary
Ignition problems Perform spark test
• Ignition coil
• Igniter
• Distributor (llA)
Spark plugs faulty Inspect plugs
High-tension cords disconnected or Inspect cords
broken
Vacuum leaks
Repair as necessary
• PCV line
• EGA line (w/ EGR system)
• Intake manifold
• Throttle body
• Brake booster line
Low compression Check compression
Page
C0-4
EM-20
Page
ST-2
Fl-10
IG-6
IG-7
IG-7
EM-38