Holley 1920 need help

slant 101...

grab the carb and see if its loose... i dont know why but the carbs on slants always loosen and will make a bad leak.

do you know how to set timing? if yes go to 10* adv with vacuum adv unplugged. speaking of did you check the diaphram? suck on the hose and see if it holds vac or not. also bypass the OSAC valve on the passenger side firewall.

for starters set the idle mixture on 2 turns out.

also check brake booster for leak.

also run the valves to .010 int and .020 exh