FREE REPAIR MANUALS & LABOR GUIDES 1982-2013 Vehicles
Courtesy of Operation CHARM: Car repair manuals for everyone.

Rough Idle - Hot

POSSIBLE CAUSE ACTION

Cold enrichment or choke system Check linkage for proper operation
not functioning and adjustment; clean, service or
replace as required.

Venturi valve sticking Clean and service as required.

Improper idle adjustments Perform all idle adjustments. Proceed to
ADJUSTMENT PROCEDURES.

Throttle plates sticking Check and service as required.

Choke pulldown diaphragm not Check and service as required.
functioning.

Venturi valve diaphragm leaking Check and service as required.

Improper idle mixture Perform propane check, adjust if
out of specification. Proceed to
ADJUSTMENT PROCEDURES.

Clogged air bleeds or air Clean with solvent and compressed
passages air.

Improper fuel level Adjust float level. Proceed to
ADJUSTMENT PROCEDURES.

Feedback motor Check for smooth operation. Refer to
FEEDBACK CARBURETOR ACTUATOR MOTOR.