Daihatsu F300 Service Manual page 1153

ENGINE MECHANICALS
Problem Possible causes Remedies Page
•
Engine hesitateS/Poor Spark plugs faulty Inspect spark plugs. IG-12
acceleration
Resistive cords faulty. Inspect resistive cords. IG-11
Incorrect ignition timing. Reset ignition timing. EM-23
Incorrect valve clearances. Adjust valve clearances. EM-16
Low compression. Check compression. EM-29
Fuel system clogged. Check fuel system.
FU-4
Air cleaner clogged. Check air cleaner. EM-13
Engine overheats. Check cooling system.
C~7
Air leakage Check throttle body. EF-106, 224
• Throttle body
Emission control system
Repair as necessary. EF-14, 15
malfunctioning (cold engine)
EFI system malfunctioning Repair. as necessary. EF-29, 136
Engine dieseling (Runs EFI system malfunctioning Repair, as necessary. EF-29, 136
after ignition switch is
Incorrect ignition timing. Reset timing. EM-23
turned off.)
•
Muffler explosion (after Incorrect ignition timing.
Reset timing. EM-23
fire) during deceleration
Incorrect valve clearance. Adjust valve clearance. EM-16
only
Air cleaner clogged. Check air cleaner. EM-13
EFI system malfunctioning Repair, as necessary. EF-29. 136
Engine backfires. Incorrect ignition timing. Reset timing. EM-23
Incorrect valve clearances. Adjust valve clearance.
EM-16
EFI system malfunctioning
Repair, as necessary. EF-29. 136
Excessive oil Oil leak. Repair, as necessary.
consumption.
PCV line clogged. Check PCV hose. EC-4, 16
Piston rings worn or damaged. Check piston rings. EM-124
Valve stems worn. Check valves and guides.
Valve stem oil seals worn or
Replace oil seal.
damaged.
Poor fuel economy
Spark plugs faulty. Inspect spark plugs. IG-12
Incorrect ignition timing.
Reset timing. EM-23
Low compression. Check compression.
EM-29
•
Air cleaner clogged.
Check air cleaner. EM-13
Fuel leak. Repair, as necessary.
Tires improperly inflated
Inflate tires to specified pressure.
Clutch slipping
Trouble shoot clutch.
Brakes dragging Trouble shoot brakes.
EFI system malfunctioning Repair. as necessary. EF-29, 136
Unpleasant odor Incorrect idle speed Adjust idle speed.
EM-23
Incorrect ignition timing
Reset ignition timing. EM-23
Vacuum leaks
Check PCV system.
• PCV line
• Intake manifold
Check intake manifold.
• Throttle body
Check throttle body.
EFI system malfunctioning Repair, as necessary.
EF-29, 136
•
EM-12