Hi all

Could you give me your comments on the following please

I have just bought a 2003 315R and when it is started i leave it to get warm before riding it whilst i am putting my boots on etc

If i blip the throttle when hot it makes a weird noise like a knock and i have been told it is Pre Ignition and the Montesa do suffer from this,they do run better on Optimax feul rather than standard petrol.

Is this normal with this bike?

I have had loads of Karts,Crossers etc all two stroke and never heard this noise on any of them

Its ok when you put it in gear and ride it.

Thanks

i have a 98 315r and mine does it.

it is because of the octane in the fuel.

montesa recomend running them on a mix of 98 octane and 105 octane race fuel.

i dont think it harms the bike so id just leave it

max

Hi all

Could you give me your comments on the following please

I have just bought a 2003 315R and when it is started i leave it to get warm before riding it whilst i am putting my boots on etc

If i blip the throttle when hot it makes a weird noise like a knock and i have been told it is Pre Ignition and the Montesa do suffer from this,they do run better on Optimax feul rather than standard petrol.

Is this normal with this bike?

I have had loads of Karts,Crossers etc all two stroke and never heard this noise on any of them

Its ok when you put it in gear and ride it.

Thanks

I have owned several 315's, and yes, they all do it. If you mix a 50:50 ratio of, at least 108 octane, with your pump gas, then all will be fine.

Thanks guy's for the replies

were do you get this 108 gas from?