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Home >> Chevrolet >> 1991 >> Forward Control 7.4 N >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/O Codes >> Symptoms (Diesel) >> Low Engine Power
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Low Engine Power

LOW ENGINE POWER

Possible Cause Correction
Restricted air intake. Remove restrictions.
Plugged fuel filter. Remove restriction and/or replace filter.
Improper throttle linkage adjustment. Adjust linkage.
Improper fuel return system. Check fuel return system.
Restricted tank-to-pump fuel supply. Check fuel delivery system.
Incorrect or contaminated fuel. Remove and replace fuel.
Restricted fuel tank filter. Replace filter.
Nozzle or glow plug compression leaks. Check fittings, and replace as required.
Plugged nozzle. Remove restriction and/or replace nozzle.