cg125 only idles on half choke

[skikman]

hi all.i bought a stolen recovered 99 honda cg125.i put an ignition on it and it starts.thing is it will only idle at half choke.take choke off and it will die.even if i turn idle screw way up[reving high]it will still die with choke off.sounds like blocked pilot jet or air leak right?ive had carb off 4-5 times cleaned,replaced o rings,replaced pilot jet with another i had,sprayed around boots with carb cleaner to check for leaks[nothing]air filter is in good nick and well sealed.ive tried turning air/fuel mixture screw but it makes no difference as it wont idle without choke.it is set now at 2 turns out.im starting to think this bike was'nt stolen at all.anyone got any other suggestions?o im going to swap needle with an old one i have but im not confident as the needle on it looks ok.

[eastanglianbiker]

i would pull the spark plug out and do a compression test to make sure thats ok to start with,have you tried new spark plug or tested ht lead from coil to plug to see if its arcing out grab it while bike running if you get a shock then its shorting out

[Guest]

Hi, apologies if I am mistaken but the choke on my CG (ES4 therefore a little later) is IMO counter intuitive (fully down is off; Fully up is choked; Midway will retain ignition), in my ignorance I suffered from the same 'fault', may I suggest that the first thing you try is 'choke lever up' (to combat lean running whatever the state of the engine) and immediately down (if the the engine stalls at this stage then simply delay the downward slope of the lever), leave to warm up whilst you don your togs and away you go. I have found that this procedure suits my engine's state of tune and have therefore capitulated. Best of luck john

[Guest]

Hi, apologies if I am mistaken but the choke on my CG (ES4 therefore a little later) is IMO counter intuitive (fully down is off; Fully up is choked; Midway will retain ignition), in my ignorance I suffered from the same 'fault', may I suggest that the first thing you try is 'choke lever up' (to combat lean running whatever the state of the engine) and immediately down (if the the engine stalls at this stage then simply delay the downward slope of the lever), leave to warm up whilst you don your togs and away you go. Best of luck john WTF this fool is replying to an ancient thread, more aplogies but it is late and I am simple.

[eastanglianbiker]

oldj good post with good idea if you look in the right hand corner of the post you will see it was only posted yesterday the date you might of looked at is in where the user id is which is the date they joined the forum so you wasnt that far in the past pop into newbies and introduce yourself it looks like you might just be nuts enough to fit in round here

[Joeman]

Can you raise the needle up a notch?

If it needs choke to run, its not getting enough fuel.

Raising tbr needle up a notch will allow more fuel for the same throttle position.

[skikman]

Hi, apologies if I am mistaken but the choke on my CG (ES4 therefore a little later) is IMO counter intuitive (fully down is off; Fully up is choked; Midway will retain ignition), in my ignorance I suffered from the same 'fault', may I suggest that the first thing you try is 'choke lever up' (to combat lean running whatever the state of the engine) and immediately down (if the the engine stalls at this stage then simply delay the downward slope of the lever), leave to warm up whilst you don your togs and away you go. Best of luck john WTF this fool is replying to an ancient thread, more aplogies but it is late and I am simple.

thanks old.thats it.now i feel real stupid.i was thinking full down was choke on