Something puzzles me about the whole vacuum issue vs pressure. When attempting to create a vacuum, it seems that there are any number of issues that can cause problems, most notably the failure to retain a tight seal in the system. This has been the bane of different systems I have read about for over a year. Its the primary reason that I chose a pressure bleeding system.
They are supposed to fit tightly and make a proper seal, but they only seem
to work, for me, on my 'merican stuff(trucks, trailers & such).
For my LRs, I use one of the cone shaped black fittings and insert the one
of proper size >into> the bleed screw. Otherwise, just use tubing of proper
size to slip tightly over the bleed screw, and join to the mighty vac with
one of the black joint fittings or cones to the tubing attached to the MV.
A box wrench/ignition wrench(the teeny ones) hung on the bleed screw prior
to attaching the tubing or fitting facilitates opening and closing the bleed
valve. A small nylon zip tie may help you make a good seal with the tubing
size you have, and relieve you of having to hold it on the bleed screw.
Armed with a MityVac...
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