1995 F150 5.8, Auto

My brake booster is hissing. I hear it in the cabin. The brakes seem fine and I don't have any other problems, so I'm wondering is this safe to drive. I don't know where to start looking to chase down the leak, I'm just guessing that I'll need a new booster. Any ideas?

 

Replace the booster. You don't need to open any hydraulic lines.



Yes, it's safe to drive, but you won't get the full power assist, and it's creating a vacuum leak for the engine.

 

Thanks. I'll get on it this weekend. I thought it was gonna be a PIA, but it looks like an easy one. Thanks again.