Hey guys, I'm new so bear with me please. I have a 1992 F-250 4x4 with a 460. When I push on the brake pedal there is a hissing noise under that dash so I looked into it and where rod from the pedal goes to the booster is where it's coming from. I put my hand over the gap between the rod and the housing there and there is definitely suction there. Any ideas as to what could fix this? Could it be just a bad seal? Something relatively cheap vs a new booster? Thanks!
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