My vaporizer is spitting out water?

SOURCE: Why is it "spitting" water instead of steam ?

If spitting, the resevoir is too full.

SOURCE: Vicks caporiser is spitting water instead of steam

Clean the unti - and do not add salt. I live in a major hard water city...and was amazed at how much dirt the tank collected. I tried adding salt to to stop the spitting, which did make a lot more steam, but did NOT stop teh water spit. I also noticed, with salt added, water in tank would only last 4-6 hours, not the 18-24 hours it should. I just figured it out, and now mine works great again, and does not spit. I cleaned the water tank throughly, several rinses, then wiped out entire inside. If you want it to work like new, you have to keep your tank as clean as new. I am going to start filtering my water that I put in with a double pantyhose I made simply so there no more dirt ~ a clean tank will fix the problem, it did mine :)

SOURCE: vaporizer is spitting water

You added too much salt. Clean it out, start over with less salt.

SOURCE: Spitting noises and gushing water

Another alternative to vinegar is to use lemon juice. About 1 cup to a tank of water should do the trick. It smells much better than vinegar and also has the acid content to clean the vaporizer.