thanks for getting back so quick.

I have checked the system for fuel leaks and taken off the line from the tank and blown some air through (low pressure) and you could hear it bubbling away in the tank. Also has a full tank of fuel from the chevron I always go to.
More information - it was a little sluggish before this happened - it would stumble until the turbo kicked in (1500rpm)then would have normal power. As for the sudden lack of power I can't explain how fast it dropped. I had the throttle pinned and no change in rpm or speed.