Just got a mighty mite vacuum pump and was playing with it. I hooked it up to the vacuum line that goes to the wipers on my 60. Pumped it up and could not get it to hold vacuum. My wipers dont work too well,go 1/4 of way up and stop. Is this a good indicator that they are not holding vacuum or is that line open until the wipers are activated. This little tool is a needed item when working on any older car. Found a leaky vacuum advance with it. Also tested my vacuum canister for the power brakes-its still holding vacuum after all these years. Using it to check my timing also.
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