my nitro car problem

[cjh97]

i have a nitro thunder tiger tomahawk bx and i have a problem my servo for acceleration goes forward and backwards but the car does not acctually move when started up help asap please

 

[chris3388]

Hello does the engine revv up and down? Or does it just stay on idle? If it revvs up and down but does not move you need to replace the clutch shoes otherwise if it doesn't revv then is the needle comming off the servo actually moving any part on the engine?

 

[MudSlinger33]

Make sure the slipper clutch is tight.