Engine Stall when heavy braking

[Mercury]

A leak in the Vacum brake booster would be REALLY obvious. When a break booster goes out on these power brake vehicles, it takes like HE-MAN like leg muscles to press the brake pedal.

Is it a BOG, a FLAT SPOT, or hesitation? Each sympton has diffrent causes.

I just noticed you have MSD ignition,I should of noticed earlier. What do you have the timing set at also?

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64 1/2 "D" code Red Mustang Coupe. 289, C4, Mallory duel point. Ported & Polished 65 heads shaved .01 with 351 valves, 11:1 comp, 1.7:1 rockers, blue wolverine lumpy cam, modified 4100 Hipo 4 barrel. GT Apperance pkg. And to many others to list

2000 Perf Red Mustang GT. 5spd. BBK Underdrive pulleys, Flotech off-road H pipe. Hurst T-Handle, 40 series Flowmasters, Steeda Tri-Ax
64 1/2 red 6cyl coupe. Future resto.

[This message has been edited by Mercury (edited 08-31-2001).]