Honda cbf 125 2009 m cutting out

[Stuart85]

Hi I was driving my Honda cbf 125 2009 m down the the A45 carriageway and slowed down go to the roundabout and the bike started to choke and died it had a half a tank of petrol and I filled it up before I left and it has had a ne battery can anyone help

[mikestrivens]

When was it last serviced? Check easy things first spark plug, wiring, choke, fuel.

[Stuart85]

It’s just had an oil change as I put a new alternator on and it’s a new wiring loom and check the spark plug and I have a full tank of fuel also I use the ultimate unleaded a friend said it could have some crap in the Carb he said to strip it down where someone said about that cleaner you can put it the tank

[Westbeef]

It’s just had an oil change as I put a new alternator on and it’s a new wiring loom and check the spark plug and I have a full tank of fuel also I use the ultimate unleaded a friend said it could have some crap in the Carb he said to strip it down where someone said about that cleaner you can put it the tank

 

It's FI so doubt it's crap in your carb .

Are all your connections good after you've swapped the alternator?

[TimR]

check fuel receipt to make sure it was petrol you put in ...

[Mississippi Bullfrog]

If it happened immediately after adding fuel then as said check the fuel put in. If it was petrol then it's possible it was contaminated. I've had it happen where the storage tank had water get into it. In theory modern petrol should be less prone to water contamination because the ethanol in it allows the water to form an emulsion which can then be burnt with the petrol. But the ultimate fuel has less ethanol so you're actually losing out by using it. (Also bike engines don't have the kind of management systems that make ultimate fuel work any better so you're wasting money putting it in a bike )

An old trick is to add a cupful of methylated spirits which acts the same as ethanol. Water and petrol don't mix but meths can mix with any water present, then the resulting emulsion can be burnt in the engine.

There are of course many other possible causes for your problem.