Petrol pouring out of overflow pipes only when driving. Help

darin · Post by **darin** » Mon Apr 27, 2015 5:52 pm

So my NC23 has petrol running out of what I presume is the overflow pipes just below the carbs. When idling it is fine but soon as I rev the engine whether in neutral or driving it immediately pours out. Any idea what this is from?

Pic below shows the pipe it is running out of (on both sides)
https://www.facebook.com/photo.php?fbid ... =3&theater

dunkenb · Post by **dunkenb** » Sun May 03, 2015 10:37 pm

Probably float valves not sealing, take the carbs apart and give them a clean, maybe replace gaskets "O" rings and float valves ( available from graeme france or david silver)

darin · Post by **darin** » Mon May 04, 2015 3:15 pm

Thanks, I was planning on doing that this weekend.

Bike has been standing for a long time so hopefully it is just that

Post by **manicguitarist** » Tue May 05, 2015 11:20 am

darin wrote:Thanks, I was planning on doing that this weekend.

Bike has been standing for a long time so hopefully it is just that

Almost certainly just that - especially if you didn't drain the carbs / use a lot of fuel additive before leaving it standing.

M

Petrol pouring out of overflow pipes only when driving. Help

Petrol pouring out of overflow pipes only when driving. Help

Re: Petrol pouring out of overflow pipes only when driving.

Re: Petrol pouring out of overflow pipes only when driving.

Re: Petrol pouring out of overflow pipes only when driving.