Engine cut out when accelerating - BMW Motorcycles

there's a pretty good chance you have coolant contamination that's clogging up the flow of the radiator fluid. this would cause unusual strain on the system as it will begin to overheat and the engine may compensate to try to cool it using the thermostat to open the flow of the coolant. but on a cool day, it never needs to.
on a hot day, it's trying to push around gunky coolant and it's not cooling properly, so the engine .. basically sucks to drive.

try having your radiator completely flushed and cleaned out first.

you will have both a throttle position sensor and a peddle position sensor both fitted to your throttle ,the cars ECU must pick up both sensors so it is not doing so you may need to change the throttle body.as you can not just change the sensors on there own.

try mass air flow sensor

.dear first . you need to make sure ignition coil on spark plug are ok
second fuel pump . third you should keep engine runing without accelerator for a while then you can accelerated .

Engine ECU is provided with a high RPM ignition cut off. Perhaps that is what is confusing you. When you accelerate at a fast rate, probably you get higher RPM's and the ECU cuts the ignition to protect the engine from damage.

it could be that the fuel isn't getting to the engine when your accelerating. try checking to see if the fuel filter is clogged, then try checking all of the filters

The fuel filter needs to replaced first. If the problem persists then next thing is the fuel pump for a replacement.

Best thing to do is go to an Auto Zone and have them scan your truck for any DTC codes. Auto Zone scan free of charge, there is just to many things that can cause the engine issues your running through such as detonation during acceleration due to timing issues to lack of fuel pressure. Good luck and keep me posted, be glad to help you get your truck running 100%

could be the pump or injectors or both. while your at it check your fuel tank for rust dirt any thing.

good luck

Jason