Atomik Nitrous 140 starting problems

[my67xr]

did you back the adjustment right off up at the throttle ?

 

[Flynn629]

this is the throttle thing in top of carby does it looks alg?

 

[Flynn629]

This is throtle up at bars

 

[my67xr]

1st picture,
that's fine, put the rubber boot back down over the top of the carby to seal that off.

the adjustment at the throttle on the handlebars needs to be backed off though
loosen the nut, right back towards the hand grips, then turn the bigger nut back down the thread too.
then check where you slide is sitting in the carby.

 

[Flynn629]

When i tighten the nut with the arrow pointing towards it towards the grips the slide goes down but then it stops going down when the nut is where its at in the picture this is as low as the slide will go down

 

[Flynn629]

And i dont know why my throttle play wont tighten up either ?

 

[my67xr]

so it is moving down, will it move down more if you take the idle speed screw right out of the carby ?

 

[Flynn629]

No tryed that wont go down futher

 

[my67xr]

ok,
there are a couple of things it could be still
slide the rubber boot on the carby top cap up a couple of inches again.
now take the carby top off, unscrew it anticlockwise when looking from the top
once it is loose, slowly pull up on the cap/cable
as you pull it out, you will see a spring and the cable coming out first, then the round slide, and lastly the needle
while you are taking it out, just check that it slides in and out of the carby freely too, not notchy or dragging etc

take note on the slide, there is a long slot, the whole length of the slide
when you go to refit the slide, that slot needs to be on the opposite side of the carby to the idle speed screw.
otherwise it wont sit into the carby properly

take a pic of the slide/needle/spring/cap etc that you removed from the carby if you can
and get a pic of the main bore of the carby from the airfilter side, with the slide removed

 

[Flynn629]

Just checked it and everything is sweet slide doesnt stick or anything , have no clue what it could be now

 

[my67xr]

well the only other part that could cause the problem is the throttle housing
it could have a cracked or broken throttle tube ?
undo the 2 screws from underneath the throttle, and put the top section off
get a picture of where the cable goes into the throttle tube

 

[Flynn629]

 

[my67xr]

while it is apart, have a look at the slide in the carby, to see where it is sitting
take the idle speed screw out while you are trying it too.


the throttle tube doesn't look to be cracked/broken.
so that can be put back together again


that adjuster at the throttle, can you undo the locknut, and try again to make the adjuster move towards the throttle again


there is nothing stopping the slide from dropping down

 

[Flynn629]

I think there is something wrong with the slide because it wont drop down and when i tighten up the adjuster thing it just stops dropping the slide when it is at the point in picture

 

[Flynn629]

If the slide is this far up will it cause the bike not to start?

 

[Flynn629]

Also another thing is when i clean carb petrol only come out the overflow pipe at the top and none comes out the bottom one in picture

 

[my67xr]

yeah it will make the bike very hard to start, if at all, if you cant lower the slide any more than that.


for petrol to come out the pipe at the bottom, the screw at the bottom of the bowl needs to be undone first

 

[my67xr]

I think there is something wrong with the slide because it wont drop down and when i tighten up the adjuster thing it just stops dropping the slide when it is at the point in pictureView attachment 9223

i don't understand what you mean here ?


loosen the nut, and spin it right to the end of the thread, towards the grip
then spin the adjuster the same way too.

the carby slide wont drop if the idle speed screw is still in the side of the carby

 

[Flynn629]

The idle screw isnt in and where the adjuster nut is in the picture is where the slide stops dropping. When the adjuster nut is loose and then you tighten it the slide goes down but then it stops going down when the adjuster nut gets to a certain tightness

 

[my67xr]

is the other end of the cable seated properly in the top of the carby?

by any chance, does the throttle cable have another adjuster somewhere along it ?