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i have a 47 engine that runs fine until you take off then it lugs out,ive rebuild dist,punp carb but cant seem to find the problem. idont think engine has ever been toughed. dist was done by pro and setup with coil . being an old engine with factory setup, could it be the vacum thanks
What carb do you have on the engine? Sounds like you either getting to much or not enough gas. If you have a stromberg 97 or a 94 and if it's been setting along time, you probably need a rebuild.
I wish I had my old '47 again, it was great fun! Try to clean out the vacuum advance tubing by blowing air through it or running a thin wire through it and/or cleaning it in an untrasonic bath with some dish detergent. My Ford manual only goes to 1940 but the 59A settings should be OK for the 59-AB as well. My book says 4 degrees initial advance with 16 degrees additional vacuum advance. If you have rebuilt the carb that should be OK, but who knows whether the jets are right and those gosh darn spring loaded idle screws can get out of range easily when you mess with them. Try to keep the two barrels equal. The tech sheet for the 59A says the vacuum advance should kick in at 400 rpm and be all (16 degrees) in by 3000 rpm.
Don Shillady
Retired Scientist/teen rodder
ive had carb rebuilt and have tied giving more gas and less gas but it still does the same thing. could the coil work on and off? it just act like its running out of gas, it goes but wontaccletrate,justbogs down, i thought about taking apart all the wiring again.
Have you checked you fuel pump?