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Engine cutting out

  • 31-08-2018 8:43pm
    #1
    ayux4rj6zql2ph
    Closed Accounts Posts: 3,001 ✭✭✭


    So, my moped has developed an issue and i'm unsure if it is small or big.

    When accelerating along the power suddenly dies.

    It is fitted with a manual choke, which I need to open to keep it running, once I close the choke and move along after about 10 seconds the engine cuts out.

    Any advice appreciated.

    MBK Nitro with the Yamaha YQ50 engine.


Comments

  • #2
    Esel
    Registered Users, Registered Users 2 Posts: 23,093 ✭✭✭✭Esel
    Not Your Ornery Onager


    Maybe fuel starvation?

    Check the fuel hose for kinks. Check fuel filter (if there is one). Also check the fuel tap (may have a gauze filter in the bowl which can get gunked up).

    Also check the air filter.

    Next would be the carburettor...

    Not your ornery onager



  • #3
    Emmersonn
    Banned (with Prison Access) Posts: 1,128 ✭✭✭Emmersonn


    Check air breather into tank.


  • #4
    zubair
    Registered Users, Registered Users 2 Posts: 2,459 ✭✭✭zubair


    Esel wrote: »

    Next would be the carburettor...

    I'd say it's the carb.

    ... or you need to let it run on the choke a little longer.


  • #5
    ayux4rj6zql2ph
    Closed Accounts Posts: 3,001 ✭✭✭ayux4rj6zql2ph


    Thanks for the replies guys.

    Long story short, the problem only began after I took out the airbox to clean all the gunk in behind it and inside the bellypan.

    While I thought I might have obstructed an airway or something like that I actually haven, as I went over it several times just to make sure.

    The airbreather pipe from the engine to the airbox has slipped off though and when running it sounds loud.

    Probably is the carb i'd say as she was idle for several years before I got it and I've only has to fill the tank once in that time.


  • #6
    aaakev
    Registered Users, Registered Users 2 Posts: 3,088 ✭✭✭aaakev


    Definitely sounds like the carb. Take it off and clean it all out with carb cleaner


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  • #7
    ayux4rj6zql2ph
    Closed Accounts Posts: 3,001 ✭✭✭ayux4rj6zql2ph


    aaakev wrote: »
    Definitely sounds like the carb. Take it off and clean it all out with carb cleaner

    Complete novice at bike mechanics :o


  • #8
    aaakev
    Registered Users, Registered Users 2 Posts: 3,088 ✭✭✭aaakev


    Its easy enough, plenty of YouTube videos to help ya out! No better way to learn how to do the basics than getting stuck in


  • #9
    ayux4rj6zql2ph
    Closed Accounts Posts: 3,001 ✭✭✭ayux4rj6zql2ph


    aaakev wrote: »
    Its easy enough, plenty of YouTube videos to help ya out! No better way to learn how to do the basics than getting stuck in

    When I copy and paste the link it shows up as invalid


  • #10
    HappyAsLarE
    Closed Accounts Posts: 771 ✭✭✭HappyAsLarE


    Oh fuel injection, how much I love you.

    Clean your carbs.


  • #11
    two wheels good
    Registered Users, Registered Users 2 Posts: 1,996 ✭✭✭two wheels good


    Prisoner 6753 wrote: »
    Complete novice at bike mechanics :o

    Then a carb strip and clean is probably not the place to start your apprenticeship.
    But removing the carb and the float bowl only for a clean may be do-able, if you have a few tools. Just remember it's soft alloy and don't overtighten any screws - and don't go poking around in the jets with a piece of wire.

    Fixing a similar problem I discovered the flimsy rubber inlet manifold was split so check that too.


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  • #12
    ayux4rj6zql2ph
    Closed Accounts Posts: 3,001 ✭✭✭ayux4rj6zql2ph


    two wheels good wrote: »
    Then a carb strip and clean is probably not the place to start your apprenticeship.
    But removing the carb and the float bowl only for a clean may be do-able, if you have a few tools. Just remember it's soft alloy and don't overtighten any screws - and don't go poking around in the jets with a piece of wire.

    Fixing a similar problem I discovered the flimsy rubber inlet manifold was split so check that too.

    I'd better get researching on google then :pac:


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