I’m getting spitting and/or gurgling sounds when I vape

Try the following:

Remove the mouthpiece / drip tip (if possible) and flick the device towards the floor (preferably outside or into some tissue) to remove any excess vape juice from the coil.
Make sure that the tank is not overfilled or over tightened to the vape battery.
Take the tank apart and run it under warm water to clear out any excess juice - thoroughly dry with clean kitchen roll before putting your device back together (make sure you remove the coil first as this must not be rinsed).
 

If none of that worked:

You may be inhaling too hard for the particular tank to handle. Try changing to a tank that’s better suited to Direct-to-Lung (DTL) vaping styles to allow you to take bigger hits. If you’re getting this from a pod vape kit, try adjusting the airflow control on the device, if there is one, so that you can get longer, airier inhales.