Whats wrong wit my bike? Help!

[puzey125]

hi guys i have bought a puzey 125cc and when i go flat out in any gear it keeps on cutting out then cutting bak in? whats the go? when im going slow the bike runs a1 but just when u get up into the higher revs?

 

[Kingers]

umm thinkin it could be needle in the carby or maybe valves, ur choke off? cause i know my bike does this as my choke comes on by itself sometimes and it cuts in and out at high revs, i now hold it open with a rubber band

 

[bulldog93]

Could it be fuel lines???? Couldn't be getting fuel through

 

[puzey125]

yeah choke stays off. dunno if it would be valves its a brand new bike. i run in it properly 2 tanks off fuel and changed oil it was going fine when i took it out and rode for bout n hour then it startd.

 

[DvDRip]

it doesn't matter if the bikes new, these engines need the valve checked on a regular basis, especially when it's being run in, I ran a tank through my bike and it started running like shit so I checked the valves and I had lost all clearance on the inlet valve

 

[mattbombers]

i know it prob a dumb question but where do u chek ur valve clearences?

 

[DvDRip]

i know it prob a dumb question but where do u chek ur valve clearences?

check these guides out

YouTube - How to Adjust Honda 50/70 cc Valves

QingQi (Qlink) 200GY Illustrated Valve Adjustment - MyChinaMoto

 

[mattbombers]

ahh thanx mate thort it was under that cover but wasnt sure. for a ducar 125cc it should be 0.03 is that right? if any1 knows

 

[coolmodee01]

could be air fuel mixture

i'd do the valves anyway

 

[coolmodee01]

could be air fuel mixture

i'd do the valves anyway

 

[headsmess]

im saying its the fuel delivery. at high rpm you use more fuel than the lines can deliver... cure? pull the tap out of the tank...take off the poxy lil filters there. replace tap. then use a "hi-flow" inline filter after the tap. and maybe, very carefully, adjust the carbie floats so that the fuels a little higher in the bowl. check fuel lines arent kinked or pinched.

and valve clearance? 4 thou, or 0.004 is pretty normal. or about 0.1 mm... two sheets of paper roughly.

 

[puzey125]

will this be the same 4 a 125cc

 

[Danity]

This happened to my bike...Had water in the fuel and carby..just drained it and it ran all good

 

[puzey125]

but when i got the bike it was running fine first ride i had after about n hour it started an i didn ride n e where close to water... could there have been water in the fuel when i bought it?

 

[puzey125]

forgot to mention i got the bike brand new.

 

[brap]

yeh my bikes doin the same thing, ive cleaned my carby and everythin gona do the valves soon..

 

[puzey125]

its all go anyways. taking it to a bike shop tuesday