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wont idle WITH choke on

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phlegmatical
Two Stroke Sniffer



Joined: 25 Nov 2013
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PostPosted: 20:19 - 15 Jan 2014    Post subject: wont idle WITH choke on Reply with quote

As title says really. My little 125 starts fine 9/10 without the choke but when I do need the choke it won't idle with the choke on, I have to keep revving or will cut out.

I'm not very good with the ins and outs of motorbikes, it just get me from a to b so please be gentle with the mechanical terms Wink
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CaNsA
Super Spammer



Joined: 02 Jan 2008
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PostPosted: 20:20 - 15 Jan 2014    Post subject: Reply with quote

What bike?

My 125 had no choke, half choke, and full choke settings.

Try a little less choke.
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doggone
World Chat Champion



Joined: 20 May 2004
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PostPosted: 20:46 - 15 Jan 2014    Post subject: Reply with quote

I wouldn't consider it unusual so long as it settles down and will idle with it closed.
A lot of bikes you need put it in gradually, until it's at half or less the throttle response is very poor.

Someone will post in a minute that their bike hardly need choke and they can just ride off normally in 10 seconds; this is probably true but there's a great deal of variation between models and even individual bikes of the same model.
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phlegmatical
Two Stroke Sniffer



Joined: 25 Nov 2013
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PostPosted: 21:04 - 15 Jan 2014    Post subject: Reply with quote

im going to be that person! my bike will start normally most of the time and i can ride off quite quickly.

my bike is a keeway superlight. the choke has 3 positions. off at the bottom, half and full. if i put choke on it wont even rev above 4000 and will cut out and wont idle at all.

I understand that the bike does not need the choke if it will start without but just for my own knowledge should it still work or not if it starts without?

I dont know if this is related at all but there is no writing on my fuel pump to say if it is open or closed other than 2 icons which i will attempt to draw...
_
| |
|_| (a cup full)

|_|
|_| (a cup half full)

i am assuming the half full or no lid is fuel pump open from what i can make out from the very poorly written (and barely english) manual.

the bike runs with it in either position but would this make a difference to the choke in anyway? (or the performance of the bike for that matter!)
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wr6133
World Chat Champion



Joined: 31 Dec 2013
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PostPosted: 21:42 - 15 Jan 2014    Post subject: Reply with quote

phlegmatical wrote:
im going to be that person! my bike will start normally most of the time and i can ride off quite quickly.

my bike is a keeway superlight. the choke has 3 positions. off at the bottom, half and full. if i put choke on it wont even rev above 4000 and will cut out and wont idle at all.

I understand that the bike does not need the choke if it will start without but just for my own knowledge should it still work or not if it starts without?

I dont know if this is related at all but there is no writing on my fuel pump to say if it is open or closed other than 2 icons which i will attempt to draw...
_
| |
|_| (a cup full)

|_|
|_| (a cup half full)

i am assuming the half full or no lid is fuel pump open from what i can make out from the very poorly written (and barely english) manual.

the bike runs with it in either position but would this make a difference to the choke in anyway? (or the performance of the bike for that matter!)


I'm going to assume you mean the fuel tap in which case one is reserve and one is normal (tap pointed up is usually normal). If you turn it halfway between the 2 it's off.

If you don't need the choke I wouldn't worry. If you do check the cable is adjusted properly, if its a knob on the handlebars like most Chinese bikes with a cable attached to the carbs, if the choke os operated directly at the carb forget that. Failing that get the carb apart and clean it properly, then set it properly as beyond it being the choke cable it's likely carb related.
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phlegmatical
Two Stroke Sniffer



Joined: 25 Nov 2013
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PostPosted: 21:48 - 15 Jan 2014    Post subject: Reply with quote

Well I assumed it was the reserve tank but I hadn't heard it called fuel pump before and that's what it calls it in the manual so it confused me. The choke is on the carb
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stuarthouston
Trackday Trickster



Joined: 31 Mar 2012
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PostPosted: 22:23 - 15 Jan 2014    Post subject: Reply with quote

As far as I know, a lot of more rudimentary chokes have this issue, as applying the choke doesn't increase the idle speed. My CG has a tendency to cut out whilst warming up with choke unless you open the throttle slightly as well. That said, I can usually take it off choke almost immediately on starting.
____________________
'96 Honda CG125 BR-T
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phlegmatical
Two Stroke Sniffer



Joined: 25 Nov 2013
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PostPosted: 23:40 - 15 Jan 2014    Post subject: Reply with quote

Well thanks for all your replies. I will get it looked at when I go in for my service in a few weeks!
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