Spitback usually means too much liquid is sitting around the coil.

Spitback is one symptom, four or five usual causes. The main one is a flooded coil. More liquid in the chamber than the cotton wick can hold, so droplets sit on the metal and pop when the coil fires. Overfilling does the same thing. Pulling too hard drags extra liquid through the wick faster than the coil can vapourise. Condensation builds up if the device sits idle for hours. And if the wattage is too low for the amount of liquid moving through, the coil isn't hot enough to vapourise it cleanly and you get wet hits instead. None of these mean the device is broken.

Stop chain vaping for a minute and let the wick catch up. Wipe the mouthpiece with a tissue. Flick the device gently downward into a tissue a couple of times to clear excess liquid from the chimney. If the pod's removable, pop it out, wipe the contacts, and reseat it. If your kit has adjustable airflow, close it down a bit so less liquid gets pulled through per draw. Check that the pod isn't overfilled past the line. After all that, take slower steadier pulls instead of short hard ones. Most spitback stops within a few pulls.

If spitback keeps coming back after the quick fixes, look at the pairing. Thin freebase juice in a pod kit built for salt nic floods fast. The wick can't keep up with how easily it moves. A worn coil cooks the cotton unevenly and starts spitting before it actually tastes burnt. Damaged seals around the coil let liquid into places it shouldn't be. Wattage on the low end of the coil's range produces wet hits. Hard fast pulling drags more liquid than the coil can handle. Pockets press the device against your body, warm the liquid, and squeeze condensation past the seals. Same thing happens when a kit gets cold and warms up. Pressure changes force liquid out.

Some signs are clear. Burnt taste plus spitback means the cotton's scorched and the coil's done. Constant gurgling that doesn't quiet after a few pulls. Liquid leaking from the bottom of the pod. Flavour staying weak even after wiping and reseating. Liquid pooling around the coil within minutes of cleaning it. Once two or three of these stack up, the pod's at the end of its life. Pushing past spitback once the coil's gone usually leads to a burnt pull next.

If a fresh pod still spits, look at the kit. Wipe the contacts inside the pod bay with a dry cotton swab. Liquid or grime there breaks the connection and the coil doesn't fire reliably. A cracked or warped pod bay won't seal properly and lets liquid pool. Sometimes a bad batch of pods just doesn't fit a particular device. Try a pod from a different pack if you have one. And if the device suddenly stopped reading the coil's resistance correctly, it'll fire weak and produce wet hits even with a perfect pod. At that point the device is the problem, not the pod.