Old news but I had this problem about a year ago whereby if your accelerate from low revs once you get to about 2,500 revs power cuts out for a while and then comes back (MY98 Terzo). This lack of power I described last time as hitting a brick wall and everyone who had experienced this knew what I was talking about. Anyway Lancasters in Reading knew what the problem was and replaced a part, the problem is can't remember what it was called and it needs replacing again. Apparently I have been told that it is a quite a common problem and happens due to the oil fill level being incorrect. Please help.

Boost Solinoide.

Shouldn't need replacing ... just cleaning out properly.(if that's the problem)

Bob