I recently became the owner of a used and refurbished PST 1300 turbine. I am a newby and my knowledge of turbines is very limited. I have a friend who has tens years experience with turbines and he assisted me in starting it up for the first time. What we found was we had to limit the upper rpm to 109 k because of what he called a compressor stall. What it sounded like was a puffing or popping sound which came more often as the rpm was increased.

What is causing this and can anything be done to rectify the problem?

When we did the test the engine had an unrestricted air intake to the engine. It did have a FOD screen in place which was removed to see if it was a problem.

Thanks