Daihatsu F300 Service Manual page 1149

ENGINE MECHANICALS
TROUBLE SHOOTING (HD-C ENGINE)
•
Problem Possible causes
Remedies
Page
Engine overheats. Cooling system faulty Trouble shoot cooling system. C0-2
Incorrect ignition timing Trouble shoot ignition system. IG-2
Fuel system faulty Trouble shoot fuel system. FU-2
Lubrication system faulty Trouble shoot lubrication system. LU-2
Engine will
not
crank or
Starting system faulty
Trouble shoot starting system.
cranks slowly.
Charging system faulty Trouble shoot charging system.
Engine will not start/Hard
Ignition problem
to start. (Only cases • Ignition coil Inspect ignition coil. IG-14
where cranking by starter • Distributor
Inspect distributor.
IG-16
motor is normal)
• Ignition timing Reset ignition timing. EM-23
Spark plugs faulty Inspect spark plugs IG-12
Resistive cords disconnected or
Inspect resistive cords. IG-11
faulty
Vacuum leaks
•
• PCV line Check PCV line. EC-4, 16
•lTC line Check lTC line.
• Intake manifold Check intake manifold.
• Carburetor hoses
Check carburetor hoses. EC-3
• Brake booster line Check brake booster.
Low compression Check compression. EM-29
No fuel supply to carburetor Check fuel line and fuel pump.
FU-4
• Fuel line
• Fuel filter
• Fuel pump
Carburetor problems
FU-14
• carburetor out of adjustment
• Choke operation
• Aooding (outer vent valve, BVSV) Repair, as necessary.
• Needle valve sticking or clogged
• Vacuum hose disconnected
• Fuel cut solenoid valve not open
Rough idle/Engine stalls Spark plug faulty
Inspect spark plugs. IG-12
or misses.
Resistive cords faulty Inspect resistive cords. IG-11
•
Ignition problems
Inspect ignition coil.
IG-14
• Ignition coil IG-16
• Distributor
Inspect distributor.
Incorrect ignition timing Reset timing. EM-23
Incorrect valve clearance
Adjust valve clearances.
EM-16
Low compression Check compression. EM-29
Incorrect idle speed Adjust idle speed. EM-23
Vacuum leaks
• PCV line Check PCV system. EC-4, 16
•lTC line Check lTC system.
• Intake manifold Check intake manifold.
• Carburetor hoses Check carburetor hoses. EC-3
• Brake booster line Check brake booster.
•
EM-8