Do I Have a Mercarb or 2 Jet Not sure which type of carburetor you have? Watch this video for and easy way to figure it out. Marine,...
Mercarb Check Balls Some Mercarbs use an intake check ball at the bottom of the accelerator pump well with a screen over the...
Mercarb Choke Mercarb Choke Thermostat The Mercarb marine 2 barrel carburetor is outfitted with an electric choke, which will get hot only...
Mercarb Doesn’t Run Unless Choke Closed Your engine may be backfiring through the carburetor. Most likely this is due to too much air, or not enough...
Mercarb Exploded View 1. Screw, Choke Housing 2. Choke Housing Assembly 3. Gasket, Choke Housing 4. Screw, Choke Lever 5. Lever 6. Screw,...
Mercarb Float Circuit Float Level Adjustment Bowl gasket in place. Plastic float – measure distance from gasket tolip of free end of float. Brass float...
Mercarb Gas Dripping From Venturi Mercarb is a copy of the Rochester 2GC and the problems encountered are similar. Fuel dripping from the booster at...
Mercarb Identification How to identify your Mercarb. The Mercarb comes with the carb number stamped in the side of the float bowl...
Mercarb Idle Circuit Doesn’t Idle Well Adjust the idle mixture. Use a vacuum gauge connected to any vacuum source off the intake and...
Mercarb Low RPM at Wide Open Throttle Carburetor runs fine except at wide open throttle.Assuming the engine compression is OK, the plugs are good and other ignition...
Mercarb Marine Accelerator Pump The Mercarb accelerator pump circuit provides a little extra fuel when accelerating. Once the acceleration is over, the accelerator pump...
Mercarb Marine Flooding Engine is running rough due to ignition problems – we will not address the various causes. Choke valve isn’t opening...
Mercarb Marine Jet Sizes Mercarb Marine Jet Sizes Find your current jet size by inspecting your main jet. It will be stamped with 3...
Mercarb Marine Power Circuit The Mercarb power circuit is used to add additional fuel to the main jet system when under power. As you...