Makes a somewhat annoying task very easy.
Proper way to use it:
' Install the tire with the valve core out. Seat the tire bead with NO sealant, core still out.
' Remove the plunger and thread the injector on.
' With the valve stem pointing up, the hose pointing down, fill up and then inject. Do not try to fill by sucking up sealant, it just makes a mess.
' Unthread, install valve, and fill up with air.
' Rinse the injector out with warm water and leave it disassembled to dry.
I have used the same injector for 5 years and it has worked great. Also a great tool for when you need to add a little sealant as well.
I am unfortunately very let down by this Stans sealant injector. A poor seal on the plunger leaded to a poor vacuum so it is not very effective and pulling up sealant and then doesn't hold it well. When you remove the hose from the bottle about 1/4 of the sealant leaks out.
Once the hose is on the valve, it is effective at pumping the sealant into the tire, but it's a mess to get to that point.
Overall a disappointment that I wish I hadn't purchased.
I give it two stars because of you can face the mess and wasted sealant, it is effective at inserting sealant in the valve. Marginally better than the 3oz bottles cone cap, but better.
