I have a Gilera Runner Vx 125, It was running fine when I last ride it. I Havn't been on it for about 6 weeks now.
Trying to start it was a pain (this is usual when cold), I found out that if i pull the throttle cable (next to the butterfly connected to carb) directly about 3 times, the bike will start first time. Once the bike is warm I can easily start it with just the electric start.

However my problem isn't to do with starting it, after I got my bike started today I tried to give it a little run and as soon as the wheels start moving the bike cuts out. I left the bike running on idle for 10minutes and tried again, but still failed. I put the bike on stand and revved it as much as I could without it cutting out, I did this for about 5minutes and tried but it still failed.

Any ideas what this could be?

I've many ideas to what it may be, I believe it could be;
Just too cold?
Fuel pump?
Bad mixture?
Or possibly the clutch?

I've had this probelm once before, but it only cut out the once and then when started again it was fine. This was many months ago.

All help is grateful. Thanks

Jamie, January 2010

My gilera 125 st starts fine when rev cuts out can neone help me changed every think

Mike, October 2013

Hi, the bike doesn't cut out until its just about to move.
If on stand I can rev a little and the back wheel will move (anymore will result in it stalling), but when the bike isn't on stand I can still give it a little bit of rev, but just before it starts moving it will stall.

Thanks I'll try look for the thread about the VXR 200 mentioned.

Jamie, January 2010

ok the reason it starts when you pull the cable is because it has an accelerator pump on the carb you can just twist the throttle a few times and it will do the same thing,now does the bike stall when the wheel is on the ground and does it shake a bit or does it only cut out when you open the throttle up to pull away.ps i always twist the throttle on this tyoe of bike a few times to start easier in the cold it gives it a few shots of neat fuel and will start better.

adam bike doctor, January 2010

Hi,
see the VX 200 question a few below yours and read answer from Adam Bike doctor. It will answer your questions

bb, January 2010