Toyota 3F-E - Engine Overheating; Engine Troubleshooting; Hard Starting; Rough Idling

EM-4
ENGINE MECHANICAL —
Troubleshooting
TROUBLESHOOTING
ENGINE OVERHEATING
Problem
Possible cause
Remedy
Page
Engine overheats
Cooling system faulty
Troubleshoot cooling system
Incorrect ignition timing
Reset timing
EM-11
HARD STARTING
Problem Possible cause Remedy
Page
Engine will not crank
or cranks slowly
Starting system faulty
Troubleshoot starting system
Engine will not start/
hard to start
No fuel supply to injector
• No fuel in tank
Troubleshoot EFI system FI-9
(cranks OK) • Fuel pump no working
• Fuel filter clogged
•
Fuel line clogged or leaking
EFI system problems Repair as necessary
Ignition problems
Perform spark test
IG-5
• Ignition coil
•
Igniter
• Distributor
Spark plug faulty Inspect plugs
IG-6
High-tension cords disconnected broken Inspect cords
IG-6
Vacuum leaks Repair as necessary
• PCV line
•
EGR line
•
Intake manifold
• Air intake chamber
• Throttle body
•
ISC valve
•
Brake booster line
Pulling in air between air flow meter and
throttle body
Repair as necessary
Low compression
Check compression
EM-16
ROUGH IDLING
Problem Possible cause
Remedy Page
Rough idle, stalls or
Spark plug faulty
Inspect plugs
IG-6
misses
High-tension cord faulty
Inspect cords
IG-6
Ignition problems
• Ignition coil
Inspect coil
IG-7
•
Igniter
Inspect igniter
IG-5
• Distributor
Inspect distributor
IG-7
Incorrect ignition timing
Reset timing
EM-11
Vacuum leaks
Repair as necessary
• PCV line
• EGR line
•
Intake manifold
•
Air intake chamber
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