I just replaced my rotor and pads in the rear and it won't bleed, I have the motor running and no luck. I saw a vid where the mech put a larger syringe and sucked the air out at the same time as pressure was applied to the brake pedal. I put a vacuum pump on the nipple thinking it would do the same. no luck there. My problem lays somewhere in the ABS. How the heck do we get these brake lines squirting again ?

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1993 MB 300D 245K died.