If I can connect a hardline and a pressure gauge to the bleeding nipple port of a caliper, can I use it as a pop tester? It has a ready reservior of fluid and I just ask someone to pump the brake and I look at the pressure and the spray pattern. Would the master cylinder create enough pressure? Am I crazy?

When done, just bleed the brake and the car is good to go. It should be similar to doing a brake hydraulic pressure test.

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Not MBZ nor A/C trained professional but a die-hard DIY and green engineer. Use the info at your own peril. Picked up 2 Infractions because of disagreements. NOW reversed.

W124 Keyless remote, PM for details. http://www.peachparts.com/shopforum/mercedes-used-parts-sale-wanted/334620-fs-w124-chasis-keyless-remote-%2450-shipped.html

1 X 2006 CDI
1 x 87 300SDL
1 x 87 300D
1 x 87 300TDT wagon
1 x 83 300D
1 x 84 190D ( 5 sp ) - All R134 converted + keyless entry.