Picked up a 91 Integra to replace my 89 that finally died on me at 320k. The 91 hasn't been driven much in the past year. Had to replace the brake master cylinder when the pedal slowly went to the floor. Bench bled the new cylinder. Seemed okay for a week, then gradually got much lower. Tried bleeding again. RR and LF went fine, but can't get any air or fluid at all out of the LR and RF and the pedal doesn't drop at all. Seems like I'm hearing some air leakage around the LF, especially when raising the pedal after closing the bleeder. I'm not losing any fluid and no signs of leakage, except maybe a little on the front line on the MC. I don't want to over-torque it, though. Might see about borrowing a tubing wrench. Any suggestions for troubleshooting? Thanks, Dave

BTW, not an ABS.