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Problem with my 125CC Bike? Answered

In day time i find my bike running not smoothly.But in night time i found that my bike is running very smoothly.My question may seems like silly.But i want to know the reason.After that i was thinking about how the bike will run smoothly in night time, suddenly a thought strikes my mind,that is in my country night time is slightly cold.Bike engines mix the fuel and air for combustion.In day time the air in the surroundings will not be in cold condition it will be slightly hot.So the ignition is rough and in night time the air will be cold,so ignition process goes smoothly in night time.The mixing of fuel and cold air makes the bike to run smoothly.This is the idea that strikes my mind.Is it correct or not.If it is not correct then explain me what was the reason for the bike to run smoothly in night time.

Tags:bike

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cerberustugowar

Best Answer 2 years ago

I don't know what the temperature difference is there between day and night, but in general, it is possible. Air is more dense when it is cold, so the air fuel mixture might be able to burn. If the air is hot, the air fuel mixture might be too rich. Does your bike have black smoke in the exhaust during the day? I wouldn't think you're engine is that sensitive, but it's possible. You could try to lean out (lessen the amount of fuel being fed into the air) your carburator. This is usually done by screwing in the main jet or getting a main jet with a smaller hole. If you bike uses gasoline mixed with oil, I would be careful as you can lean it out too much which would starve the engine of lubrication and your engine would need costly repair.

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Toga_Dan

2 years ago

vapor lock

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Toga_DanToga_Dan

Answer 2 years ago

am I the only one for whom the last letter, or punctuation gets cut off on this site? I try to remember to put a few spaces after a "?" or a ".". But my "?" got cut off on

"Vapor lock?".

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Rajkumar2506Toga_Dan

Answer 2 years ago

your comment seems like not related to the subject

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Toga_DanRajkumar2506

Answer 2 years ago

are you familiar with vapor lock? It is more likely to occur at higher ambient temps.

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Toga_Dan

2 years ago

Are you more cautious and back off from the throttle at night?

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Rajkumar2506Toga_Dan

Answer 2 years ago

throttle controls speed of an engine,then how can I back off from applying throttle?.Without applying throttle no one cannot drive

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Toga_Dan

2 years ago

One method to determine rich/lean status is to feed it some propane while it's running. If engine goes faster, it has been running lean. If it runs slower, it is rich, or balanced naturally.