Mont 315 Flat Spot

[yamahaty250xox]

hi all,

on sunday i did a extremley muddy and wet trial.

after i got home and pressure washed my bike it developed a flat spot.

when i leve it to tick over for a minuete or two its fine but when i pull back the throttle it dies.

i have to build up the revs slowly and then ride.

any one know?

thanks in advance

[furse]

sounds like water in the carb sucking through from the airbox, clean and dry filter and box remove drain plug from airbox, drain carb amd if you've got a compressor take the carb off and give it a good blow out.

If this doesn't work then maybe water on the electrics which will probably dried by now.

[ham2]

Or you could do what I did( lazy style) with my Mont, open the airbox drain then go straight to the main jet.

This sits in the brass bolt that holds the bottom of your carb' bowl up.

I think there is just enough room to remove it without disturbing the carb' (don't let the bowl itself drop).

There is usually a droplet of water in that brass bolt which interferes with the main jet when you open the throttle above idle...blow it out (lung power will do).

Enjoy

[yamahaty250xox]

Or you could do what I did( lazy style) with my Mont, open the airbox drain then go straight to the main jet.

This sits in the brass bolt that holds the bottom of your carb' bowl up.

I think there is just enough room to remove it without disturbing the carb' (don't let the bowl itself drop).

There is usually a droplet of water in that brass bolt which interferes with the main jet when you open the throttle above idle...blow it out (lung power will do).

Enjoy

thanks everyone, i tried to flush it through by changing the petrol in the tank, letting the carb run out of fuel and start again.

but this didnt work