||"Valve is not tight"1
||Rim tape installed manually -> air escapes under the tape into the rim (possibly at another location than where the valve is installed).
||Re-install rim tape.
|Valve core not tightened properly.
||Apply soapy water on valve and see where bubbles grow (by the valve core or between valve nut and rim).
|Air leaking between rim and valve.
- Rotate wheel so valve is on bottom.
- Rotate wheel sideways (rectangular to rolling direction) so sealant flows along tire wall to the valve.
|"I can't measure the tire pressure"
||Depending on the pressure measuring device the knurled nut of the valve core is not pushed all the way down to open the rubber flaps.
- Open the curled nut on the valve core fully.
- Push the curled nut all the way down.
- Is air coming out? -> measuring should be fine if your measuring device pushes the nut down all the way.
|"I can't release air from my tire"
||Rubber flaps are not pushed open by the valve core extension.
- Is the valve core extension installed properly on the valve core?
- Was the curled nut on the valve core fully opened?
- Try to release air with the applicator needle, then with the valve core again.
|"Valve is not tight without valve core installed"
||After measuring/refilling when retracting the applicator needle, some air might leak through the rubber flaps.
||No worry, this is normal. You still have enough time to install the valve core without losing a lot of air. By pushing the valve core curled knob / valve core extension the rubber flaps can be "re-aligned" so they close better.
||Plunger is ejected from syringe
||Plunger shoots out of syringe when opening the sealant regulator valve.
||Open sealant regulator valve slowly and be ready to close it quickly. Plunger moves a lot faster when no sealant is in the tire anymore (only air flow).