i have a 56 buick and my motor keeps flooding .it is the rochester 4gc carburetor.the floats have been triple checked on measurement and are fine.plus,this carb has a screw at both primary and secondary chambers so if your floats are too high,the gas will come out when you remove the screws and it isnt so i know its probably not the floats.the jets are the proper size.the fuel pressure is right at 4 pounds when running which is normal.the carb has been completely rebuilt and new everything.ive checked that the needle valvse are clean and do not over tighten them.
b4 it floods the plugs,it starts right up and will run until the engine barely starts to warm up and it will stall.then of course i cant start it due to wet plugs.ive tried leaning it out when it is runnning but it makes no difference.i cant time it without it being warmed up either but it is within range since i static timed it.what gives?
could it be an intake leak?also there are these small holes on the carb base stand,1 above each bolt mounting hole that dont seem to make sense.i see drizzles of gas come out of each too when its done running.should those be plugged?are those causing intake leak?they look like they are supposed to be there but dont know if they should be sealed or not.seems to me that there should be no holes beneath the carb like that.
b4 it floods the plugs,it starts right up and will run until the engine barely starts to warm up and it will stall.then of course i cant start it due to wet plugs.ive tried leaning it out when it is runnning but it makes no difference.i cant time it without it being warmed up either but it is within range since i static timed it.what gives?
could it be an intake leak?also there are these small holes on the carb base stand,1 above each bolt mounting hole that dont seem to make sense.i see drizzles of gas come out of each too when its done running.should those be plugged?are those causing intake leak?they look like they are supposed to be there but dont know if they should be sealed or not.seems to me that there should be no holes beneath the carb like that.
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