Try riding with the fuel cap open, you could have a blocked vent in the cap this will cause a vacuum and stop the fuel flowing.

When you stop the air can catch up allowing the bike to run again.

Does your bike have a fuel canister ?

They can fill with fuel causing issues.

 

I never knew there was a vent , I thought there was only an overflow pipe

 

You either have a clogged tank vent or a clogged evap canister. The evap canister can get clogged by over filling the tank. Fuel instead of vapors is forced into the cannister and turns the carbon granules into mush.

 

If you find that your bike runs OK with the gas cap cracked open there is a thread with great pics on disassembling the gas cap.

Gas Caps: Vented, non-Vented, and how to change the...

9/30/21: Updated image links. Pretty sure they are all in the right order. ;-) Should stay this way as long as smugmug doesn't start charging me too much. Maybe someone will benefit from this info down the road, and it will save them some time. So let's just say for grins you are changing...

www.stromtrooper.com

 

Great work again Brockie

 

Unfortunately it wasn't that. Still looking around to understand the culprit

 

Try the fuel flow test.

Quick fuel pump flow test.

Quick fuel pump flow test.

www.vstrom.info

A partially blocked fuel filter may do that - good to idle and run but cannot maintain flow at speed.
You may need to remove the fuel pump and inspect its filters.
Otherwise, I would suspect an electrical component breaking down through heat.
Is it one cylinder or both that shut down?

Have you opened and inspected the large electrical multiplug left side of the headstock above the radiator?

 

I am experiencing the same issue with my 2011 650. Tried with the fuel cap open-no difference. Gets worse as it gets warmer - will run well after a cool down, then starts again. Take about 20 minutes to show up while riding. Exhaust smells very rich when this affecting the ride. Feels as if the coil is breaking down. Do the 650s have dual coils or a single coil? Don't believe both coils would break down at once, maybe something else?

 

@GregM784

Dual coils one for each cylinder. They are mounted behind the V engine brackets just below the tank/frame. So if one of them dies you have a DL325 which is also consistent with the fuel smells if one cylinder isn't firing.

 

I'll ride it until it acts up and pull the plugs, maybe it'll tell me

Thanks for pointing out the obvious...haha

 

Good point. I have an ir temp gun. Appreciate the idea

 

Since this last happened I have replaced the regulator and the bike runs smooth. Then again it is not summer anymore so i cant replicate the superhot conditions