1963 Valiant V200 Wagon

my plans for tomorrow are to first check the float levels, i bought the clear plugs so i can check it while running without have to open the plugs. then take it for a quick spin on the freeway, bring it back and see what the plugs say. also while its hot, i can check valves since i have a few that still sound bit noisy. what would be the best way to check for a vacuum leak. is carb cleaner the best thing to spray on it? or would i even be reading 19 on my vacuum gauge if i had a leak. wouldnt the gauge read low? sorry for the dumb questions. this is all a learning lesson for me. i like bolting things together better than tuning hehe.

my favorite methods for checking vacuum leaks are:

1) Propane torch.Dont light it! Just crack the torch valve and direct the gas at where you think the leak is. Propane sould smooth the idle and the engine may pick up some rpm due to the extra fuel if you have a leak.

2)soapy water in a spray bottle. The water should bubble whereever you have a leak. It likely wont affect the idle much if at all