Troubleshooting FOX FLOAT shocks?????

[Bakerider]

So I have an '06 M7 with FOX Float shocks on the front. I had the shocks off this off season and compressed both by hand and both seemed to have good rebound. I now have them mounted with the same pressure at 65 psi. The Left side Float shock doesn't seem to want to hold its rebound completely...If I lift up on the front of the sled to relieve the pressure, then lower it back down, the Left shock compresses slightly (like a couple cm's or so) while the right shock holds its rebound.
The shock seems to be holding its pressure at 65 psi however, so its not acting like its leaking past any gaskets? Could it be that the nitrogen needs to be recharged? I am not sure how the nitrogen could escape but I know they DO recharge shocks without rebuilding them....Any input or advice would be much appreciated!!Thanks!

 

[mountainhorse]

Sounds like they are in need of a service... maybe the IFP pressure has bled off??

Maybe Gus will chime in here.

 

[Bakerider]

What is the IFP pressure?

 

[mountainhorse]

It is the Internal Floating Piston pressure... (The IFP is #27 in the first pic)

The nitrogen gas pressure behind the floating piston that helps the shock work well.

If you have not had these shocks serviced in the last season or 1500 miles... IMO, you are over due. With high quality shocks, you have the ability to service/rebuild them.

Fox Float cutaway... Float 2 on the left.... std float on the right....the float 2 has the negative air spring , #18...as well as some other differences.

"Float 2's" have the name "Float 2" on the shock label...

Standard float shocks do NOT say "2" on the label.