What problems on an 1989 GM S15 that has soft brake pedal no leaks at MC but must crank 12 times and pump brakes to start?
start by checking the master cylinder break booster by unplugging the vacuum hose connecting it to the intake manifold and capping it, if it starts easier you might have an internal failure in the booster. If not, check for leaks in the hose its self and manifold leaks.
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