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Why does my scooter refuse to start in the morning winter

December 17, 2024 by raju ginni Leave a Comment

why scooter starting trouble in winter morning compared to motorcycle with same grade engine oil

 

A scooter often experiences more starting trouble in cold winter mornings compared to a motorcycle with the same grade engine oil because of its smaller engine size, which cools down faster, combined with the design of the scooter’s transmission system, making it harder for the thick cold oil to effectively lubricate all moving parts during initial start-up; while a motorcycle usually has a larger engine with better heat retention and a more robust transmission system to handle the thicker cold oil better.

scooty-not-starting-in-winters-morning-1-jpg

Key factors contributing to this difference:
  • Smaller Engine Size:
    Scooters typically have smaller engines that lose heat faster in cold weather, making it harder for the engine to reach operating temperature quickly. 

  • Transmission Design:
    Most scooters have a CVT (Continuously Variable Transmission) which relies on a belt and pulley system, which can be more sensitive to thick cold oil compared to a motorcycle’s gear-based transmission. 

  • Oil Viscosity:
    Even with the same “grade” of engine oil, the viscosity can change significantly in cold temperatures, making it harder for the oil to flow freely in a small scooter engine. 

What to do about it:
Pre-Warm the Engine: If possible, park the scooter in a warmer area or use an engine pre-heater.
  • Use the right oil grade:
    Ensure you are using an engine oil with a low “W” (winter) viscosity rating appropriate for cold weather, like a 5W-30 or 0W-30. 

  • Warm up the engine:
    When starting your scooter in cold weather, use the choke and let the engine run for a few minutes before accelerating. 

    Use the Choke Properly: For carbureted scooters, engage the choke to enrich the air-fuel mixture
  • Battery maintenance:
    Keep your scooter’s battery well-charged as cold temperatures can reduce its power output.

 

raju ginni
raju ginni

Hi, am (rajuginni). writer since 2012, passionate about Knowing new things sharing the same, after engine failure, i became bike enthuaist , you may follow me yoututbe.

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