Jump to content


brake booster?


Recommended Posts

I am just about to change out my booster as I am having the same symptoms (hiss when brakes are applied with car running and RPM's rise by about 300). I'm curious why the RPM's rise with this condition. My best guess is that the carbs are being leaned out somehow, when air is seeping past the booster diaphragm. Anyone else care to offer thoughts.

Time to replace your booster.

Link to comment
Share on other sites

The factory service manual indicates there are (were?) 2 service kits for the booster. One kit contains the wear items (seals). The other kit contains the diaphragm, reaction disk, and a few other pieces. You need both kits to do a "complete" overhaul. I doubt you can get these at a part store. It is most likely a dealer item only.

When opening the booster be careful. There is a rather large spring in there that will push the 2 halves of the canister apart. Other than the spring issue it seems like it should be an easy job.

Link to comment
Share on other sites

Beer man, when I wanted to rebuild mine last year, Fastwoman mentioned that the Nissan dealerships not longer stocked those kits, in fact, they had not even heard of the rebuild kit, but I would call courtesy anyway.

Keep in mind Advance Auto has brake boosters for 98 bucks....with a core. I installed one and it is working wonderfully.

Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
  • Create New...

Important Information

By using this site, you agree to our Privacy Policy and Guidelines. We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.