Carburetor Type:
High-performance, pressure-actuated carburetor designed for demanding applications.
Distinguishing Features:
Pressure-actuated design offers superior fuel delivery and resistance to vapor lock compared to vacuum-operated carburetors, particularly in demanding environments or high-performance applications.
Advantages:
Consistent fuel delivery under varying conditions, improved throttle response, enhanced reliability in high-temperature or altitude situations.
Primary System:
Fuel Delivery and Metering
Component Systems:
Accelerator Pump, Idle System, Main Metering Jets, Power Enrichment System, Float Level Adjustment, Choke Mechanism (if applicable to specific PS models)
Maintenance:
Cleaning, Inspection, Lubrication, Gasket Replacement, Diaphragm Inspection
Adjustment:
Idle Speed Adjustment, Idle Mixture Adjustment, Accelerator Pump Stroke Adjustment, Float Level Adjustment, Fuel Pressure Setting (where applicable)
Installation:
Mounting Procedures, Linkage Setup, Fuel Line Connections, Initial Calibration
Troubleshooting:
Diagnosing Rich/Lean Conditions, Hesitation, Stalling, Rough Idle, Poor Performance, Fuel Leaks
Repair Rebuild:
Carburetor Disassembly, Component Identification, Reassembly, Use of Rebuild Kits, Specific Component Replacement (e.g., needle and seat, power valve, gaskets)
Depth:
Comprehensive; covers theory of operation, detailed disassembly/reassembly, troubleshooting guides, and calibration specifications.
Applications:
Typically found in performance vehicles, aircraft, marine engines, and heavy-duty industrial applications where consistent fuel metering is critical.
Engine Type Compatibility:
V8, V6, Inline-6, Inline-4 engines; suitable for naturally aspirated and sometimes turbocharged applications requiring precise fuel control.
Operating Principle:
Pressure-actuated diaphragm or piston system regulates fuel flow based on engine manifold pressure and venturi vacuum, maintaining a consistent fuel-air mixture across a wider range of operating conditions.
Required Fuel Pressure:
Specific pressure range is critical and detailed in the manual; typically higher than standard downdraft carburetors (e.g., 4-7 PSI or higher, depending on specific model).
Fuel Handling Precautions:
Manual will detail safe handling of gasoline, proper sealing, and leak prevention. Emphasis on preventing fuel spray and ignition sources.
Fire Prevention:
Correct installation and maintenance are crucial to prevent fuel leaks, a primary fire hazard. Manual will stress proper gasket seating and torque values.
General Recommendation:
Inspection and cleaning recommended annually or every 10,000-15,000 miles. Rebuild recommended every 50,000-75,000 miles or when performance issues arise. Specific intervals will be detailed in the manual.
Fuel Type:
Gasoline (unleaded or leaded, depending on engine and era of application). Manual may specify octane recommendations.
Lubrication Points:
Points of linkage pivot and throttle shaft (if applicable). Manual will specify light engine oil or specialized lubricant.
Common Wear Items:
Diaphragms, accelerator pump cups, needle and seat, gaskets, O-rings, throttle shaft bushings.
Performance Degradation Causes:
Clogged jets, worn metering rods, stiff diaphragms, incorrect float level, vacuum leaks within the carburetor body or fuel circuit.
Manufacturer:
Bendix Corporation, a major automotive and aerospace component manufacturer with a long history of innovation in fuel systems.
Carburetor Series Significance:
The PS series represented an advanced development in carburetor technology, offering improved reliability and performance over conventional designs, particularly in demanding applications where standard carburetors struggled.
Typical Era Of Use:
Mid-to-late 20th century, though specific models might have had extended production runs or application in specialized markets.
