Lack of Power

Engine delivers less than expected power. Little or no increase in speed on slight acceleration.

POSSIBLE CAUSE ACTION

Spark timing - excessive retard ^ Check Spark Controls,


Initial timing incorrect ^ Check Distributor Assembly installation


Lean Air-Fuel mixture ^ Check Air-Fuel ratio, O2 sensor, perform injector balance test, inspect regulator operation (check vacuum line and return hose), check fuel pressure


Restricted exhaust ^ Check Catalytic Converter system


Poor or contaminated fuel ^ Recommend higher grade fuel