Anyone technical minded know why my fox fork 34 has suddenly started loosing air pressure over a few days? Is it best to send it in for servicing or is it an easy fix?

Probably needs a new o-ring somewhere in the air spring. Easy is subjective 🙂

I had this ongoing problem with my fox 36s.

Using warm soapy water I tracked the leak down

It turned out to the be the air valve on the top of forks. It has a ?10mm lock ring around it and try tightening that. Otherwise you need to get a new oil ring or sea for it. If they are new it should be a warranty issue.

Haven’t had a chance today but will look at the air valve over the weekend to see if thats the issue then. Can you buy these over the counter?

Check that the valve core is tight.