Polaris Virage TX 2000 Service Manual page 60

MAINTENANCE/TUNE UP
Troubleshooting
Engine Overheating/Misc.
Symptoms: Engine overheats.
• Cooling water passages in pump restricted (check screen and passages)
• Impeller or pump housing damage
• Pump housing passage plugs missing
• Thermostat/popoff valve restricted
• Cooling water passages in engine restricted with sand or debris
• Loose or damaged cooling hoses or clamps
• Collapsed exhaust hose or pipe (restricted)
Symptoms: Hard starting (engine turns over with electric starter but engine won't start)
• Out of fuel
• Low compression
• Weak spark or no spark (see ignition troubleshooting)
• Lean mixture (see lean mixture troubleshooting)
• Choke inoperative or not closing completely
• Fouled spark plug(s)
• Water in fuel
• Worn, broken or cracked reeds
• Restricted or plugged low speed/idle passages
Symptoms: Low compression.
• Choke or throttle closed (both must be wide open for test)
• Loose cylinder head or head gasket failure
• Rings stuck or broken, or excessive end gap
• Piston damage (see piston damage)
• Cylinder worn, improperly honed or bored, damaged
Symptoms: Erratic idle/no idle.
• Idle speed improperly adjusted
• Plugged or restricted low speed fuel passages
• Incorrectly adjusted low speed mixture screw
• Ignition problem
• Throttle linkage worn or sticking
• Air leaks in intake tract
Symptoms: Hissing sound when removing gas cap.
• Hose kinked
• Outlet check valve clogged
• Vent line plugged
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