Nightmare first ride of the year
 

Hi, i have just returned from my first days riding in a long time and it was nothing short of a nightmare as my pride and joy was constantly misfiring and cutting out. It does this when coming down the box approaching a junction or bend and when coming to stationary cuts out 8/10 times. I have checked all the things mentioned here before. I know my TPS has been changed etc. The only thing different i have done since getting it out this year is to put some Premium 97 RON fuel in but i have refilled with standard whilst on the run with no change. Could it be the fuel as i have never used 97 RON before and had a perfect couple of years so far. Maybe theres some simple things to try otherwise i will drain the tank and remove it and clean injector etc. Its just unrideable as it is. PLEASE HELP PLEASE

Mick
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Hi Mick

If everything was running fine before, and now u have tried different fuel and this is happening, I would go with it being the fuel and would dump the tank and refill with normal fuel, see how that goes. Best of luck fixing the issue

Injectors can get gummed up if you've left it standing for a while. ~I would suggest you leave the premium fuel, and if you can live through a couple fo tank fuels of rough running, it will probably smooth out again.

Next time you store it run some fuel additive through the bike before storing (you can get stuff specifically if you're laying your bike up)

Drain the fuel tank & run some fresh fuel through it.

Cheers Kev, I was thinking that would inevitably be the way to go. Just wanna get out there now our weather is shaping up. Ride on.

In the UK petrol now contains up to 5% ethanol. And it goes off quicker as a result. I think ethanol absorbs moisture whch then turns into water.
Don't know how long you had the bike off the road but anything longer than a month either: use fuel stabiliser or drain the tank or fill it up

Are you sure about the ethanol?

Ryland

could also try adding some Silkolene Fuel System Treatment Pro FST to your fuel this should help clean the injectors if they are a bit gummed up

ethanol
 

Yes definitely.
Governments has agreed CO2 emission targets. To satisfy the fashionable ECO winging voters, they have introduced bio diesel & ethanol in petrol.
In the UK, by current law,they have to add up to 5%.
In France I think you get 10% mix (the petrol is called E10)
In the Us I think it is a wopping 15%.

What the public is not told is that the production & addition of bio diesel & ethanol produces: more CO2 compared to the original fuel, causes more environmental damage as a lot of rain forest (specially) in the far east is burnt down to create fields for planting bio/ ethanol crop and finally a lot of farmers are now planting or selling the crop to the oil company as it increases their profits compared to selling it for food

Yo need to be aware of this cause ethanol on the one hand increases the octane rating which can be good but:
absorbs moisture
makes the fuel go off quicker
can cause damage to rubber, hose and metal in the engine specially on older bikes
affects star up in cold weather
increases fuel consumption

Mrs stumpyd says im sad for spending soooo much time on here, she doesnt realise how informative this place is. Thanks bonjo