suspected water in engine???

[petrolhead19]

It isn't always going through with a normal fuel tap as they are vaccum operated.. they only let fuel through with the engine running / cranking over.

Unless your tap has been modified it will be this way.

Chance is you have a small leak aroudn the fuel tap, not bad enough to make things wet.

Do you smell fuel with the bike sat or is it when it's running? could be excessive choke, or has been said.. you have a leak somewhere.

Don't forget though if it's a hot / warm day the tank willl smell of fuel vapour being vented.

I use to have a leak on the pet cock but i have since sorted that out so no leaks anymore from anywere.

I have had same with my fireblade and r6 and r1 if i dont turn pet cock off then i always can smell the fumes the next day in garage, could just be me with a sensitive nose lol

[Neosophist]

Unless you have a faulty tap then I can't see how on an NC30 turning the tap off would stop any petrol smell?

The tap automatically closes itself by the vaccum diaphram so no fuel can flow, this is why you can disconnect the fuel pipe from the tank with the tap set to on and not have any fuel go anywhere.

This means the amount of fuel in the carbs / fuel pipe is going to be the same with the tap on or off, so I don't see how the smell could be any different? Am I missing something?

[petrolhead19]

noooo i have a nc23 lol sorry forgot to put that in my original post.
I was just commenting in general not for specific bike lol

[Neosophist]

Ahh that makes more sense :)