ODES UTV Desertcross 1000cc-3, Maintenance Manual

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11. TROUBLESHOOTING
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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 intake system and replace defective part(s).
4. Melted and/or perforated piston dome; melted section at ring end gap.

Spark plugs heat range is too hot.
Install recommended spark plugs (refer to TECHNICAL SPECIFICATIONS).

Coolant less than recommended level (engine gets too hot).
Repair cooling circuit and/or refill with recommended liquid.

Poor quality and/or wrong fuel. Clean from contamination and use appropriate fuel
(refer to TECHNICAL SPECIFICATIONS).
5. Piston color is dark due to seizure on intake and exhaust side.

Cooling system leaks and lowers coolant level.
Tighten clamps or replace defective parts.
Add antifreeze in cooling system until appropriate level s reached.
Replace damaged parts.
6. Cracked or broken piston.

Cracked or broken piston due to excessive piston/cylinder clearance or engine
overheating. Replace piston.
Check piston/cylinder clearance (refer to CYLINDER AND HEAD).
7. Check piston rings and cylinder surface for grooves.

Poor oil quality. Use recommended oil.

Contamination through engine intake.
Replace defective part(s) and use new air filter.
8. Check crankshaft, rocker arms movement.

Oil pump failure due to lack of oil.
Repair and replace defective parts and use new recommended oil.

Oil contamination due to clogged oil filter/oil strainer.
Replace oil and oil filter at the same time, replace defective part(s).
9. Check valve springs exhaust/intake.

Broken valve spring damages the cylinder head, valve(s), rocker arm(s), piston,
piston rings and connecting rod. Replace defective part(s).
10. Check if fuel supply is sufficient.

Low fuel level.

Clogged fuel filter or fuel injector filter.

Fuel line is contaminated and/or bent. Clean and/or replace defective part(s).