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You can also remove the blower control module directly at the top of the heater plenum by itself or in concert with the blower motor. View from the top and insert vacuum from the right. Brake clean spray or other cleaning fluid sprayed on the face of the evaporator will help if there is a sticky film present.

I know Dave eschews instrumented help, and is pretty successful doing so, but he is also very experienced😁 I do lean more toward getting actual numbers. Nominal fuel pressure with engine running and vacuum line connected is ~35psi, so a good squirt from the Schroeder valve could shoot a stream dozens of feet in the air, a wet dribble won't cut it for starting or accelerating. Fuel pump is commonly available as a replacement part, not repairable.

About your unrelated question about the brake fluid reservoir and fill mark. I'll attach a photo of an article regarding brake pressurization and fluid level that I keep in my Reatta to show any mechanics that work on my brake lines that require adding brake fluid. Invariably, mechanics unaware of how the Reatta system works will over-fill. I got the instructions somewhere on the ROJ.