ENGINE
TROUBLESHOOTING
Engine Turns Over But Fails to Start
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No fuel
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Dirt in fuel line or filter
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Fuel will not pass through fuel valve
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Fuel pump inoperative/restricted
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Tank vent plugged
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Carb starter circuit
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Engine flooded
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Low compression (high cylinder leakage)
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No spark (Spark plug fouled)
Engine Does Not Turn Over
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Dead battery
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Starter motor does not turn
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Engine seized, rusted, or mechanical failure
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Kickstart components damaged
Engine Runs But Will Not Idle
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Restricted carburetor pilot system
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Carburetor misadjusted
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Choke not adjusted properly
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Low compression
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Crankcase breather restricted
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Air filter restriction
Engine Idles But Will Not Rev Up
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Spark plug fouled/weak spark
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Broken throttle cable
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Obstruction in air intake
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Air box removed (reinstall all intake components)
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Incorrect or restricted carburetor jetting
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Reverse speed limiter limiting speed
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Carburetor vacuum slide sticking/diaphragm damaged
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Incorrect ignition timing
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Restricted exhaust system
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Cam Lobe worn
Engine Has Low Power
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Spark plug fouled
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Cylinder, piston, ring, or valve wear or damage (check
compression)
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CVT not operating properly
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Restricted exhaust muffler
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Dirty carburetor
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Cam lobe worn
Piston Failure - Scoring
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Lack of lubrication
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Dirt entering engine through cracks in air filter or ducts
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Engine oil dirty or contaminated
Excessive Smoke and Carbon Buildup
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Worn rings, piston, or cylinder
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Excessive piston-to-cylinder clearance
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Worn valves, guides or seals
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Restricted crankcase vent
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Air filter dirty or contaminated
Low Compression
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Decompressor stuck
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Cylinder head gasket leak
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No valve clearance or incorrectly adjusted
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Cylinder or piston worn
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Piston rings worn, leaking, broken, or sticking
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Bent valve or stuck valve
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Valve spring broken or weak
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Valve not seating properly (bent or carbon
accumulated on valve area)
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Rocker arm sticking
Backfiring
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ETC or speed limiter system malfunction
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Fouled spark plug or incorrect plug or plug gap
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Carburetion faulty - lean condition
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Intake / Exhaust system air leaks
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Ignition system faulty:
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Spark plug cap cracked/broken
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Ignition coil faulty
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Ignition or kill switch circuit faulty
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Ignition timing incorrect
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Sheared flywheel key
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Poor connections in ignition system
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System wiring wet
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Cam lobe worn or Valve sticking
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Lean condition
4.41
Summary of Contents for 2007 GOES 300 S
Page 9: ...GENERAL INFORMATION Vehicle Component Inspection Location 1 6 ...
Page 39: ...CVT SYSTEM CVT EXPLODED VIEW 3 4 ...
Page 51: ...ENGINE ENGINE EXPLODED VIEW 4 3 ...
Page 52: ...ENGINE 4 4 ...
Page 53: ...ENGINE OIL FLOW DIAGRAM 4 5 ...
Page 115: ...FUEL CARBURATOR Fuel tank location 6 17 ...
Page 125: ...BODY SUSPENSION STEERING 7 6 ...
Page 133: ...BODY SUSPENSION STEERING 7 14 ...
Page 142: ...BRAKES FRONT BRAKE EXPLODED VIEW 8 6 ...
Page 188: ...ELECTRICAL 9 32 ...