Airless sprayer, paint comes out like silly string

In order of ease/cost to fix: First, check your spray tip. Most of them are reversible to help spray out any debris that may be lodged in them. Next, check that all of your filters are clear and let paint flow freely. Depending on your model there are up to three, one filter in the spray gun, usually in the handle, another filter is at the pickup tube and some sprayers also have another filter on the machine where the hose hooks up. Another cause may be because your paint is way too thick or not mixed well. A highly recommended paint additive for airless sprayers is Floetrol, it makes the paint flow extremely well. If none of these fix your problem you may well have a worn packing or diaphragm, again depending on your model, and the machine isn't developing enough pressure to atomize the paint. If you have the means put a pressure guage in line with the hose at the machine and turn it on. You need at least 1200 to 1800 psi for most latex paints, a little higher for enamels and thicker paints.