Hello everyone, So I dont post a lot, just read a lot. A lot of my problems with my Mav have already happened to other people, but this time I cant find a solution. Maybe its because Im an idiot. I dont know So anyways, I just installed a new carb its a Motorcraft ca-997 1bbl carburetor brand new and it is replacing a Carter RBS-IV for my 74 mav with an I6 250. They are almost identical except the new one doesnt have an electric choke or an external fuel bowl vent. So it seems that it wont start, like its not giving any fuel to the engine. Also it seem that there is pressure building up in the fuel line, leaking out near the hose clamps. So did I miss something when installing the carb? or what? Any suggestions would be greatly appreciated. Thank you.
Sometimes you have to place your hands over the throat of a dry carb for it to get suction, for loss of a better word. Or, simply prime the carb with a small amount of gas. I have no explanation for the leaking at clamps. I suggest to make sure you have new fuel line hose and clamps. Dan
Well, you see, I can poor a little bit of gas in the carb and it will start and run for about 10 seconds then die. And what i mean by the leaking is that it seems as if there is an obstruction in the carb that isnt allowing the fuel to proceed in its normal course, cause the the fuel pump to pump fuel into the line without it going anywhere, which is causing the leaking. I hope I made it a little more clear. Thank you for the suggestion
I would take the carb off and remove any fuel in it. Blow thru the fuel inlet and find out if there is indeed an obstruction. Sure sounds like it, but I dont know what it could be, unless it has one of those little filters installed backwards. Dan
ditto what dan said,if it has one of those sintered metal filters behind the fuel inlet fitting in the carb.It may be in backwards.
Thank you both for your help. I feel a little stupid, it seems the floater was stuck or something of that nature. Its working fine now, thank you very much for your help.
Sometimes you can fix these kinds of problems by tapping the carb with the handle of a screwdriver, if the floats are sticking.
