Honda Transalp XL700V Manual page 590

TROUBLESHOOTING
ENGINE DOES NOT START OR IS HARD TO START
TROUBLESHOOTING
1. Fuel Line Inspection
Check fuel flow to throttle body.
Does fuel reach the throttle body?
NO
YES
2. Spark Plug Inspection
Remove and inspect spark plugs.
Are the spark plugs in good condition?
NO
YES
3. Spark Test
Perform spark test.
Is there weak or no spark?
YES
NO
4. PGM-FI System Inspection
Check the PGM-FI system.
Is the PGM-FI system normal?
YES
NO
5. Cylinder Compression
Test cylinder compression.
Is the compression low?
YES
NO
6. Engine Starting Condition
Start engine by following normal procedure.
Does the engine start then stops?
YES
23-2
– • Clogged fuel line and strainer
• Clogged fuel tank breather
• Faulty fuel pump unit (page 5-58)
– GO TO STEP 2.
– • Incorrect spark plug heat range
• Incorrect spark plug gap
• Dirty air cleaner
– GO TO STEP 3.
– • Faulty spark plug
• Loose or disconnected ignition system wires
• Broken or shorted spark plug wire
• Faulty CKP sensor
• Faulty ignition coil
• Faulty engine stop relay
• Faulty ECM
• Faulty engine stop switch
– GO TO STEP 4.
– GO TO STEP 5.
– Faulty PGM-FI system (page 5-13)
– • Valve clearance too small
• Valve stuck open
• Worn cylinder and piston rings
• Damaged cylinder head gasket
• Improper valve timing
– GO TO STEP 6.
– • Leaking intake manifold
• Faulty IACV
• Improper ignition timing (Faulty ECM, CKP sensor or TP sensor)
• Contaminated fuel