red side

Engine Surges At Idle

Engine Surges At Idle

Possible Cause


Possible Remedy

Air in fuel system


Bleed fuel system, eliminate air leaks

Tank empty or tank vent blocked


Fill tank/bleed system, check tank vent

Low idle misadjusted


Readjust idle stop screw

Bumper spring misadjusted (RS...governors)


Readjust bumper spring

Governor misadjusted or defective


Readjust or repair

Fuel injection pump defective or cannot be adjusted


Remove pump and service


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