Help with bl revo
 

When I give it gas it doesn't have torq. And when i give it gas it goes but when I hold It the tires don't move but the Cvds do. It doesn't sound that bad I first thought it was the pinion not touching the spur gear but that's not it cause the cvds are moving help idk what's wrong

Take the wheels off and check the cross pins behind the hexes. If you are missing rhem it will cause issues. You may also have a stripped (rounded off) hex that is spinning inside the wheel.