engine not starting brand-NEW

Discussion in 'Instructions for Building and Repairing Motorized ' started by Noahneedsmechanicalhelp, Jan 6, 2020.

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  1. Noahneedsmechanicalhelp

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    For some reason my engine won't start I purchased a 80cc 2 stroke kit from eBay came with all the necassary parts I pulled the choke up I have checked the spark plug magneto and throttle tried starting without kill switch cables attached and with it on there is defiantly fuel flowing through the fuel line there's fuel in the carborater bowl I even purchased another carborater and that didn't work the clutch works fine I have tried the same thing with 2 different engines from the same supplier and its the same result I even tried drill starting it visa vi the magneto I twist the spark plug off and I see a misty vapor as i look down into the hole, I've twisted the engine top off and its not wet I just don't know what the problem is its driving me crazy please help I can take photos if need be
     
  2. indian22

    indian22 Well-Known Member

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    Do you have a strong spark at the plug? Do you have compression? Is the plug wet with fuel after an extended session of trying to start the motor? If the answer to these three questions is yes. Does the motor attempt to fire?

    Rick C.
     
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  3. Noahneedsmechanicalhelp

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    The spark plug yes is quite effective tested it yes there is certainty compression around the ngine chamber near spark plug the spark is not wet after an extended use of time the chamber pumps up and down whenever i attempt to ride when I stop the bike it stops too
     
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  4. indian22

    indian22 Well-Known Member

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    It sounds as though you're not getting fuel to the combustion chamber.. The spark plug should be wet after a lengthy effort to start the engine. Are you priming the carb enough before trying to start the motor (five or six pumps on the carb prime button)? And then choking the carb while trying to pedal start? If you have sufficient compression, spark and fuel the engine should at least try to start and run.

    Rick C.
     
    #4 indian22, Jan 8, 2020
    Last edited: Jan 8, 2020
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  5. Noahneedsmechanicalhelp

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    Thanks Rick C I'm going to try that out a few times I never really went that in depth about starting up the engine
     
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  6. Venice Motor Bikes

    Venice Motor Bikes Custom Builder / Dealer/Los Angeles

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    The engine will not start with the choke lever all the way up!!!
    The best position for the choke lever to work is about 1/2 way up.

    In most cases, you don't even need to raise the choke lever to start it
     
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  7. Noahneedsmechanicalhelp

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    So I tried starting with the choke lever down it worked all was great I started it a few times then I leave it till the morning try again and its not starting at all it attempts to fire put its the same problem as before while i was trying to start i even move the choke lever up and down its still messed up I check the smark plug and thats fine so what is it
     
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  8. Greg58

    Greg58 Well-Known Member

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    This is where trial and error comes into play, every engine combo is different and what mine needs to start may be slightly different than yours. Try several till one choke position works. Always turn the fuel off at the tank when you stop, the stock carb is bad about flooding the engine.
     
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  9. Noahneedsmechanicalhelp

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    I tried that just then I also dont have a stock carborater on it I swapped with a red one
     

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