Bike loses power

[addiemartin11939]

Hi all

I have a grs 125cc motorcycle, having a few issues,

As i warm my bike up leave her running for a good 5+mins then go to ride, she rides a Little bike then starts to slow down like she wants to cut out and eventually does,

I have oil fresh oil changed,

Any idea would be grateful

Thank

Adam

[fastbob]

Hi all

I have a grs 125cc motorcycle, having a few issues,

As i warm my bike up leave her running for a good 5+mins then go to ride, she rides a Little bike then starts to slow down like she wants to cut out and eventually does,

I have oil fresh oil changed,

Any idea would be grateful

Thank

Adam

 

And then what happens ? Does it start again after a while or do you have to push it home again ? It sounds like a fuel issue to me . Either its not getting enough or its getting too much . Start by checking that there is enough fuel in the tank and that nothing is stopping it getting to the carb .

Edited December 23, 2018 by fastbob

[mikestrivens]

Hello and welcome

[JustaTwist]

Sounds to me like you’re leaving the choke on which is causing the bike to cut out when warm.

[addiemartin11939]

Hi

Its cuts out but starts up again after a few minutes, and then rides perfect,

Plenty of fuel in tank i do live my choke on for a little while to stop it from cutting out

[Mississippi Bullfrog]

Shouldn't really need choke for that long. Even in cold weather you ought to be able to run without choke after a minute. It may just be that you're fouling the plug.

Take the plug out and post a photo of what the electrode looks like

[TimR]

did it do it before the oil was changed ?

Any recent work or other issues on bike ?

When did this fault start ?

[Tango]

When it cuts out open the filler cap......If you hear a hissing sound, then it's possible that the fuel tank breather is clogged, causing a vacuum to form in the tank, stopping the fuel from flowing to the carb......

[Stu]

Is this a recent thing? If so it could be carb icing