The good news is you don't need any special equipment to diagnose and fix weak flavor. Here's a step-by-step routine to try before you give up on a device:

1. Warm it up. Place the disposable in your hands and rub them together for a minute, then hold it in your palm. Or tuck it in an inner pocket (close to your body) for 5–10 minutes. You're aiming for room temperature or slightly above.

1. Take a few dry pulls. With the device off (or just not activating the draw), inhale gently through the mouthpiece a few times. This pulls e-liquid into the wick without heating it. Wait a minute or two after priming.

1. Check the airflow. If your device has adjustable airflow, close it down a notch or two. Less air means more concentrated vapor, which can boost flavor.

1. Take a slow, steady puff. Rather than a long, hard pull, try a steady 3–4 second draw. Quick, sharp pulls can flood or starve the coil.

Do these in order. Most of the time, warming and priming is all you need.