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^^^^Yes, no such thing But, if it were air, you could pump the pedal and get the level to raise and feel firm.
Lou
Actually if it's air, you have to bleed it out of the system, as mentioned.. Any Air in the brake lines, has an adverse effect in the pedal / pressure.
So I installed the rear ISF calipers on my car today and i had to buy longer studs and use a 8mm spacer. For anyone that has 18's wheels and plan on installing isf brakes you need to check your spacing. Im running 18x9.5 with a 25mm offset in the rear, so now with the 8mm spacer it went down to a 17mm and it finally cleared the caliper.
I'm reading back through this thread, and this caught my eye. Did you really just put ISF calipers on the car, or did you put on calipers and rotors?