squeeze sound during compressor cut in

compressor type:Rotary screw air comp. ingersollrand UP5 22-7. Before this problem, oil was found sprayed all inside air comp. enclosure, it locks oil coming from air filter . After that oil was refilled and compressor started , but when comp. cut in and inlet valve opens high squeeze sound was there like it is gamed so, I stopped the compressor. mohammed, RIFFA P.S BAHRAIN