Carburetor Issues, Dripping Carbs...

[tank1949]

Foam Floats have been used for Decades in Cars/Trucks, and I have never seen one with a flexing fulcrum like the one you showed. I would raise hell with Sierra, as their supplier is apparently slapping parts together with no regard to Quality Control

It seems that years ago before FI, we had to adjust floats to reduce flooding. We would just bend fulcrum to achieve results. But, I haven't been into a quad-jet for some time.

 

[jimmbo]

Sometimes, it was done, to compensate for High/Low Fuel Pressure, in some cases because the Wrong Float was used(There are several Hundred different Floats for the Q-jet alone), other times because of a different Needle and Seat.
Holley had an innovative way to set some floats, an externally adjustable Needle and Seat, in conjunction with a Sight Glass/Level Screw

 

[Rick Stephens]

Sometimes, it was done, to compensate for High/Low Fuel Pressure, in some cases because the Wrong Float was used(There are several Hundred different Floats for the Q-jet alone), other times because of a different Needle and Seat.
Holley had an innovative way to set some floats, an externally adjustable Needle and Seat, in conjunction with a Sight Glass/Level Screw

I remember those. And you are dating yourself. Those external adjustments even worked some of the time.

 

[jimmbo]

I remember those. And you are dating yourself. Those external adjustments even worked some of the time.

They were often a PIA to do, with the Engine running.

 

[Lou C]

They are still selling carbs with that set up!
Even for marine use....

Quick Fuel M-600 Quick Fuel M-Series Marine Carburetor

QFT brings its engineering expertise to the marine market. The M-Series feature billet-style metering blocks and throttle bodies for more precise performance and exceptional strength. •Exclusive Black Diamond coating for enhanced corrosion protection and appearance, coating provides a 6%...

www.holley.com

Quick Fuel M-650 M-Series 650CFM Marine Carburetor

QFT brings its engineering expertise to the marine market. The M-Series feature billet-style metering blocks and throttle bodies for more precise performance and exceptional strength. •Exclusive Black Diamond coating for enhanced corrosion protection and appearance, coating provides a 6%...

www.holley.com

Quick Fuel M-750 Quick Fuel M-Series Marine Carburetor

QFT brings its engineering expertise to the marine market. The M-Series feature billet-style metering blocks and throttle bodies for more precise performance and exceptional strength. •Exclusive Black Diamond coating for enhanced corrosion protection and appearance, coating provides a 6%...

www.holley.com

 

[Scott Danforth]

Love the Holley external needle/float adjustment.

The whole cartridge is $5. Takes 20 seconds to adjust