This is often a cause for concern, mine when hot will drop to 13/14psi but i know some have been reported less than 10psi. Dont know how good the sensors are so best to fit a new one if concerned. Then worry if nec
Mine is about 28/30 PSI idling when warm and about 55 PSI on starting from cold. Since it's service it reaches 60/65 PSI when doing a constant 70mph on a motorway!!!
Aye, mine can go as low as 10 psi at idle if I've been pushing. Asked our local specialists and he said not to worry - pressure sender inaccurate at low revs.
I was told that it should read similar to the revs. If ya doing 3500 revs it will be around 35psi. This is with a fully rebuilt engine and a new sensor.It runs around 15psi on tickover. My last engine ran around 7-8psi on tickover and did'nt take long to knacker up.