Thanks for quick reply Jay and Smit
Right I will take off valve and soak over night as need van today but valve is clean as looks like new
If I unplug idle valve van stalls if I block off boost gauge vacuum pipe at manifold no change
If I remove oil filler cap when running no change ?
If the idle was my only problem then I would adjust but I think it's connected to the low boost issue only reaching 5 psi max but can't feel turbo kick in how can I tell if the actuator is functioning and what's the best way to find leak in vacuum ??
Thanks Jim