Take a look at the owners manual regarding starting the engine, there appears to be some sort of reset using full throttle for 5 seconds and pushing the starter button. It says the engine will not start if full throttle is applied so I guess it must be doing something of a reset or maybe just clear...

That sounds like throttle position sensor to me, you've adjusted the throttle so that the TPS sees the throttle open when you turn it back on again some ecu's will not deal with that very well. My BMW for instance will not run properly if you open the throttle before the ecu has done it's pre start...

Greetings again, Here is another link, similar to the one found earlier by Bill; https://bikesandtravels.com/biker.aspx?ride=750 TTFN Hugh. Unfortunately thats a CBF125 and not the CB125F - different bikes, there's loads of info on the CBF but not much on the CB125F sadly but cheers anyway As has b...

After further digging, no air leaks having sprayed all over the throttle body and air box etc, fiddle with the throttle cable and adjusted it slightly to tighten it and open the throttle very slightly and sat and ticked over quite merrily for about 15 mins blipping the throttle etc and would always ...

Definitely no sensor on the radiator, coz there isn't a radiator
Dunno what the air box sensor is, I was assuming it was air temp??? What's the sensor you saw on the throttle body?

Can I try just disconnecting the air sensor in the air Box? Any way of testing the sensor?

Thanks guys - some answers for you to ponder Fuel - its been like this for 2 years so new fuel isn't going to make any change I think, vacuum in tank - i'll try that one - only sensor on it is a lambda as far as I can tell, tried disconnecting it and made no difference CBF125 - this is a different b...

Need some help chaps, my girlfriend is getting her sons CB125F ready to sell (as he's at Uni and needs a car now) but it has a tickover issue, it runs fine when cold but dies once warm, its been like this for a while apparently. In the summer I gave it a service and checked the valves, oil change, n...

Sorted now!

Pm,d you