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cracked or broken manifold, See ENGINES ENGINE PERFORMANCE CARBURETOR TROUBLE SHOOTING: NOTE: This is GENERAL information. This article is not intended to be specific to any unique situation or individual vehicle configuration. The purpose of this Trouble Shooting information is to provide a list of common causes to problem symptoms. For model-specific Trouble Shooting, refer to SUBJECT, DIAGNOSTIC, or TESTING articles available in the section(s) you are accessing. BASIC COLD START SYMPTOMS TROUBLE SHOOTING CHART CONDITION POSSIBLE CAUSE CORRECTION Engine Won’t Choke not closing Check choke Start operation, see FUEL SYSTEMS Choke linkage bent Check linkage, see FUEL SYSTEM Engine Starts, Choke vacuum kick setting Check setting and Then Dies too wide adjust see, FUEL SYSTEMS Fast idle RPM too low Reset RPM to specif- ication, see TUNE-UP Fast idle cam index Reset fast idle cam incorrect index, see FUEL SYSTEMS Vacuum leak Inspect vacuum system for leaks Low fuel pump outlet Repair or replace pump, see FUEL SYSTEMS Low carburetor fuel level Check float setting see FUEL SYSTEM Engine Quits Choke vacuum kick setting Reset vacuum kick Under Load incorrect setting,see FUEL SYSTEMS Fast idle cam index Reset fast idle cam incorrect index, see FUEL SYSTEM Incorrect hot fast idle Reset fast idle RPM, speed RPM see TUNE-UP Engine Starts, Choke vacuum kick set too Reset vacuum kick, Runs Up,Then narrow see FUEL SYSTEMS Idles, Slowly With Black Smoke Fast idle cam index Reset fast idle cam |