Entity Item Motion

When I spawn in an entiti item the motion is always pointed to -x.

It doens't matter if I do:

entityItem.motionX = whatever;

entityItem.motionY = whatever;

entityItem.motionZ = whatever;

The motion will get the motion I gave it but it will be pointed to -x.

So if the motion I gave it is entityItem.motionZ = 1; then it will go to z and -x.

The code I use to spawn the entity Item:

public void dropStack(World world, int x, int y, int z, ItemStack stack, int posX, int posY, int posZ) 
{	
	EntityItem item = new EntityItem(world, x+0.5, y+0.5, z+0.5, stack);

	item.motionX = item.motionY = item.motionZ = 0.0D;

	if(posX!=x)
	{
		if(posX>x)item.motionX = Math.random() * -0.2D;
		else if(posX<x)item.motionX = Math.random() * 0.2D;
	}

	if(posY!=y)
	{
		if(posY>y)item.motionY = Math.random() * -0.2D;
		else if(posY<y)item.motionY = Math.random() * 0.2D;
	}

	if(posZ!=z)
	{
		if(posZ>z)item.motionZ = Math.random() * -0.2D;
		else if(posZ<z)item.motionZ = Math.random() * 0.2D;
	}

	if(!world.isRemote)world.spawnEntityInWorld(item);
}