The Spirit Realm

The map I have shows the Flame Spirt as being in Lichen Creep in teh first big lava pool if you come in from Corathus Creep.

I've done this camp several times (there are two mephits on the lake which I assume are the PH's), and ahve gotten the Dwarven Stalwart and the Gnomish Rockomancer to spawn several times. The Flame Spirit however is still a Noshow.

Did he get moved when they moved lots of names around early in UF?
or am I just unlucky?
Or am I completely wrong on where he spawns?

ph is mephits in that pool, not gnomes or dwarves.

The location you probably have on your map is the original location before the ph was moved when a lot of phs were moved in several of the zones. Huurgh has the new location which should be up on top the same level as when you zone in from Arthicrex.