My 1954 210’s Rochester single barrel carburetor has been over flowing. I have replaced the gas tank and line. I rebuilt the carburetor but it still overflowed. I have since replaced the carburetor with a new rebuild. I have driven for 2 weeks without an issue. Today the same overflowing problem occured. Could the problem be that when I converted to a 12 volt system I changed to an electric fuel pump? The pump I have pushes 72 gallons per hour. Is 72gph to high of a rate? Should I replace the pump with a lower gph delivery rate.
It is not the volume that is the issue, it's the pressure. As stated, you probably need a pressure regulator. It sounds like your carb is being overwhelmed.
My Pump is stated 4-6 psi output, for the single barrel Rochestor any idea what the psi should be set to on the regulator? Thanks for the post big help!
My Pump is stated 4-6 psi output, for the single barrel Rochestor any idea what the psi should be set to on the regulator? Thanks for the post big help!
Thanks for the info, I am new to all this car repair stuff, I replaced the mechanical pump which the previous owner was having problems with. The electric pump I purchased was recommended by a local parts place, I didn’t know about the importance of a constant psi or anything else. I will get a regulator , Hope it works!
Try the regulator and stop getting recommendations for the parts place. If there was any way to run a mechanical pump I would. JMO
Has the float "sunk?" If the float no longer floats no regulator in the world will keep it from flooding. I had one sink on the way to Memphis in 1980. Ran fine on the highway but would flood at a traffic light. the float is probably brass and they can crack from vibration. Got a rebuilt carb from the parts store and all was well. Check that before you throw money at it in the form of regulators.
Cut the pressure to 3 lbs. ... "B" Rochester has a metal float that seldom fails. Ethanol in the gas will melt any Viton parts from older carb kits, so pull the lid & look in there ...