Quote:
Originally Posted by Old Redneck
I ordered a new fuel pump because there no vacuum there.I an starting there.
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Save the old fuel pump. It may actually be in better shape than you think, and last longer than an off-shore made replacement.
I'm guessing you can test the vacuum booster by placing a finger on the 'manifold' fitting to block it and gently blowing into a rubber tube connected to the 'wiper' fitting (photo 1) to see if the diaphragm can hold pressure or is leaking. This can most likely be done *on the car* to save some time, labor and aggravation.
IF.. you're only trying to get a vacuum signal to test and operate the heater controls, the booster part of the fuel pump is not actually needed at all.
Just connect a vacuum line from the manifold vacuum fitting on the carburetor (photo 2, assuming you have a good vacuum level there) and run it thru the firewall to the existing(?) vacuum connections under the dash. (photo 3)
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