Full throttle cut out

[Redneck biker]

My engine acts weird and at full throttle it may not accelerate fast and kind of bog in the low rpms. When I move the throttle up a sliver it will then start to accelerate. It's like a sweat spot just above full throttle I don't understand. I also have a homemade boost bottles I turned nicely with my engine. If that makes a difference.

 

[darwin]

Help folks out more with what motor, 2/4 stroke, style carb etc...………………….

 

[FNTPuck]

Sounds like you may be rich at WOT and need a smaller main jet.

Have you checked the plug to see how its running?

 

[crassius]

I would first plug the hole for the boost bottle and see what happens.

 

[Redneck biker]

I leaned the mixture and it is running perfect now but has started to 4 stroke more.

 

[Sanny M. Odulio]

Same thin happened to me when i bought a used bike from cregslist,
I also made a home made boost bottle. I ended up burning my piston, and scoring my cylinder walls.
I would remove the boost bottle and reset the clip on the needle to return to factory.

 

[Redneck biker]

Why would you score the walls and burn the piston? Was it running too lean

 

[Sanny M. Odulio]

Yes, It was my mistake in experimenting with the bike. it may also have bin damaged from the start. i have since acquired a new motor, and in the process of breaking it in. Im 1 gal into the process.

 

[inspectorcritic]

My engine acts weird and at full throttle it may not accelerate fast and kind of bog in the low rpms. When I move the throttle up a sliver it will then start to accelerate. It's like a sweat spot just above full throttle I don't understand. I also have a homemade boost bottles I turned nicely with my engine. If that makes a difference.

It's your carb connection might have a leak take it off put crazy glue on it tighten back up solid.

 

[Sanny M. Odulio]

i have since gone back to stock settings.
All is well, thank you