11. TROUBLESHOOTING
11-
11
2.
Problem with fuel system (carburetor, fuel pump, hoses, etc.).
Clean, inspect, repair or replace defective parts. Replace defective part(s).
3.
Check engine compression.
Insufficient engine compression. Replace defective parts.
Valve seat worn and/or damaged. Repair by performing valve guide
procedure (refer to CYLINDER AND HEAD). Readjust valve clearance.
4.
Internal engine problem.
Overhaul engine to find defective parts. Refer to the appropriate section in
ENGINE.
Symptom: ENGINE HARD TO START
1.
Check idle bypass valve.
Stuck or defective. Refer to ENGINE MANAGEMENT.
2.
Check closed throttle and idle actuator with DELPHI.
Wrong TPS zero setting/idle bypass valve reset. Refer to ENGINE
MANAGEMENT.
3.
Check engine compression.
Wrong adjustment (likely too tight). Refer to ENGINE MANAGEMENT.
4.
Check engine compression.
Insufficient engine compression. Replace defective part(s) refer to LEAK
TEST.
5.
Verify spark plug condition.
Defective, improperly set, worn out, fouled. Identify source of problem
and correct. Replace.
6.
Check fuel level in fuel tank and fuel pressure.
Low or no fuel pressure. Replace defective part(s) refer to FUEL TANK
AND FUEL PUMP.
7.
Check CAPS (camshaft position sensor).
Defective sensor/wiring. Refer to ENGINE MANAGEMENT.
Symptom: ENGINE SUDDENLY TURNS OFF
1. Perform engine leak test.
Damaged head gasket and/or seal and/or leaking inlet/exhaust valve(s).
replace and/or repair defective parts.
2.
Check spark plugs condition and/or gap.
Fouled spark plugs or wrong spark plug gap. Readjust gap and clean spark
plugs or replace..
3.
Piston seizure.
Spark plugs heat range is too hot. Install spark plugs with appropriate heat
range (refer to TECHNICAL SPECIFICATIONS).
Compression ratio is too high. Install genuine parts.
Poor oil quality. Use recommended oil.
Leaks at air intake manifold (engine gets too lean). Retighten screws or
replace air intake manifold gasket.
Snow/water intrusion through intake system into combustion chamber. Clean
Summary of Contents for UTV1000-3
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Page 38: ...3 ENGINE 3 8 LUBRICATION SYSTEM COMPONENTS...
Page 47: ...3 ENGINE 3 17 MAGNETO SYSTEM...
Page 75: ...3 ENGINE 3 47 ENGINE DRIVE SHAFT CRANKCASE AND PTO COVER...
Page 76: ...3 ENGINE 3 48 CRANKSHAFT...
Page 77: ...3 ENGINE 3 49...
Page 101: ...3 ENGINE 3 73 GEARBOX...
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Page 152: ...8 SUSPENSION SYSTEM 8 6...
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