What was found
AFTER TAKEOFF FROM KELP, CLIMBING THROUGH FL 250, THE CAPTAIN NOTICED THE RT ENG INSTRUMENTS FLUCTUATING. HE SLIGHTLY REDUCED POWER TO SEE IF THE FLUCTUATIONS FOLLOWED & THEN WENT TO IDLE. HE THEN NOTICED THE OIL LIGHT CAME ON & THERE WAS NO RESPONSE TO POWER LEVER ADVANCE. DECLARED AN EMERGENCY & REQUESTED TO RETURN TO ELP, THE ACFT RETURNED SAFELY. FOLLOWING TROUBLE SHOOTING PROCEDURES IN THE ENG MANUAL, FUEL PRESS AT THE ENG DRIVEN FUEL PUMP WAS FOUND TO BE FLUCTUATING FROM 70-240 PSI. THE FUEL PUMP WAS REPLACED & PRESS CHECKED AGAIN. ALL INDICATIONS WERE AS THE MANUAL STATED FOR NORMAL OPERATION. A TEST FLIGHT WAS COMPLETED WITH NO ISSUES REPORTED.