Cessna 402C captain reported rejecting the takeoff after the left engine experienced a power surge.

Attributes
ACN	1406130
Time
Date	201612
Local Time Of Day	0601-1200
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Light	Daylight
Aircraft 1
Make Model Name	Cessna 402/402C/B379 Businessliner/Utiliner
Operating Under FAR Part	Part 135
Flight Phase	Takeoff
Flight Plan	IFR
Component
Aircraft Component	Engine
Person 1
Function	Captain Pilot Not Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	Aircraft Equipment Problem Less Severe Ground Event / Encounter Loss Of Aircraft Control

Narrative:

After being cleared for takeoff; my copilot (the pilot flying); brought the throttles slowly up to takeoff power. At full throttle; the left engine surged to 42 inches manifold pressure; then dropped to 37; causing the plane to yaw; and directional control difficult to maintain. I took controls and made the decision to abort the takeoff; bringing the throttles to idle; slowing down and taxiing off the runway uneventfully.

Original NASA ASRS Text

Title: Cessna 402C Captain reported rejecting the takeoff after the left engine experienced a power surge.

Narrative: After being cleared for takeoff; my copilot (the Pilot Flying); brought the throttles slowly up to takeoff power. At full throttle; the left engine surged to 42 inches manifold pressure; then dropped to 37; causing the plane to yaw; and directional control difficult to maintain. I took controls and made the decision to abort the takeoff; bringing the throttles to idle; slowing down and taxiing off the runway uneventfully.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.