Description

Carburetor gx340

The Honda GX340 is a 337cc, 4-stroke, OHV (Overhead Valve) engine, commonly used in industrial and commercial applications such as generators, pressure washers, water pumps, and construction equipment.

Carburetor for Honda GX340

The carburetor is a critical component that mixes air and fuel for combustion. If your GX340 engine is having trouble starting, idling roughly, or running inefficiently, the carburetor might need cleaning, adjustment, or replacement.

Carburetor Specifications

• OEM Part Number: 16100-ZE3-V01 (varies by model and revision)
• Compatible with Models: Honda GX340 11HP engines (and sometimes GX390 with minor adjustments)
• Main Jet Size: Typically #82 to #90 (can vary by altitude and fuel type)

Common Issues & Fixes

✅ Engine Won’t Start – Check for clogged jets or a stuck float.
✅ Rough Idle or Surging – Adjust the air-fuel mixture screw or clean the idle jet.
✅ Fuel Leaks – Inspect gaskets, float needle, and fuel lines.
✅ Black Smoke from Exhaust – Running too rich; adjust the air-fuel screw or replace the jet.

Replacement Options

• OEM Honda Carburetor – More expensive but ensures perfect fit and reliability.
• Aftermarket Carburetor – Budget-friendly, but quality varies. Look for well-reviewed brands.
• Rebuild Kit – If the carburetor is salvageable, replacing the gaskets, needle, and jets can restore performance.

Basic Carburetor Adjustment

1. Turn Air-Fuel Mixture Screw (if applicable)
   • Start at 1.5 turns out from fully seated
   • Adjust in small increments until the engine runs smoothly
2. Adjust Idle Speed Screw
   • Set to 1400–1500 RPM for stable idling