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Why does the roketa 250cc motor scooter idle ruff and then shuts off?

Fuel-Related Issues

* Dirty fuel injector: If the fuel injector is dirty, it can cause the engine to run lean and stall.

* Clogged fuel filter: A clogged fuel filter can restrict fuel flow to the engine, which can cause it to stall.

* Low fuel pressure: If the fuel pressure is too low, the engine will not get enough fuel to run properly and will stall.

Air-Related Issues

* Dirty air filter: A dirty air filter can restrict airflow to the engine, which can cause it to run lean and stall.

* Intake leak: An intake leak can allow unmetered air into the engine, which can cause it to run lean and stall.

Electrical Issues

* Weak spark: A weak spark can prevent the engine from igniting the fuel mixture properly, which will cause it to stall.

* Faulty ignition coil: A faulty ignition coil can cause the engine to misfire or stall.

* Loose or corroded electrical connections: Loose or corroded electrical connections can prevent the electrical system from working properly, which can cause the engine to stall.

Other Issues

* Low engine compression: Low engine compression can cause the engine to run weak and stall.

* Worn piston rings: Worn piston rings can allow oil to leak into the combustion chamber, which can cause the engine to stall.

* Sticking valves: Sticking valves can prevent the engine from getting enough air and fuel, which can cause it to stall.