Speedyfix is right.

Yes the cv joint races and balls due to dirt wear and lack of lubrication have slack and under acceleration around curves they pop pop pop. Or click that means there is no boot that is going to fix that slack. There are rebuilt half-shafts available but you must make sure you know if your car has Viscus differential with limited slip. The inner CV joint splines are different. Transmission number plate or door jamb sticker RE4F04A is open differential and RE4FO4V is limited slip viscus differential it has different axles so be careful. I would replace the entire half-shaft (s) or rebuit it and torque the axle nut to 172 to 240 foot pounds torque depending on the model of your car. Axle nut is either 2 1/4 inch or 36 mm. I am sorry I assumed your car has a four speed automatic transmission since you never mention anything about the vehicle but broken halfshalf boot.