Honda Activa SCV110, Справочник по обслуживанию

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7-2
CYLINDER HEAD/VALVES
TOOLS
Valve spring compressor 070GE – 001-I100
Valve guide reamer 070MH – 001-I160
Valve guide driver 070ND – 006-I150
Seat cutter, 22 mm (45° IN) 070MH – 003-I150
Seat cutter, 27.5 mm (45° EX) 070MF – 003-I180
Flat cutter, 24 mm (32° IN) 070MH – 002-I180
Flat cutter, 28 mm (32° EX) 070MH – 002-I120
Interior cutter, 26 mm (60° EX) 070MF – 004-I150
Cutter holder 070MH – 005-I150
TROUBLESHOOTING
Engine top-end problems usually affect engine performance. These can be diagnosed by a compression test, or by tracing top-end
noises with a sounding rod or stethoscope.
Compression too low, hard starting or poor performance
at low speed.
• Valves
— Incorrect valve clearance
— Burned or bent valve
— Incorrect valve timing
— Broken valve spring
— Uneven valve seating
• Cylinder head
— Leaking or damaged cylinder head gasket
— Warped or cracked cylinder head
— Loose spark plug
• Faulty cylinder or piston (section 8)
Compression too high
• Excessive carbon built-up on piston or combustion
chamber
Excessive smoke
• Worn valve stem or valve guide
• Damaged stem seal
• Faulty cylinder or piston (section 8)
Excessive noise
• Incorrect valve clearance
• Sticking valve or broken valve spring
• Worn or damaged camshaft
• Worn or damaged rocker arm and/or shaft
• Worn or damaged cam sprocket teeth
• Loose or wom cam chain
• Worn or damaged cam chain tensioner
• Loose spark plug
• Faulty connecting rod or crankshaft (section 12)
• Worn,damaged or pitted ball bearing.
Rough idle
• Low cylinder compression