Replace Brake Booster/Master Cylinder Gasket

[PaulR]

Hi everyone,

I have a 1999 Solara V6. I am having an issue with the brakes being weaker than normal and the car wanting to move at a stoplight unless you really down the pedal (I know this is normal for Toyotas, but it's worse than normal). I did the tests for the brake booster and found that it is not holding air correctly when I do the tests. I also hear a hissing sound when I turn off the car, don't know if that's related? Before I replace the entire brake booster, I saw that some people on this forum simply replaced the brake booster to master cylinder gasket. I have a Haynes manual, and it doesn't provide instructions to replace the gasket, only remove the brake booster. Can I remove the two bolts that hold the master cylinder to the brake booster, slide on the new gasket, and bolt it back in without messing with the brake lines and bleeding the brakes? If so, is there a special grease I should use on this gasket?

Thanks for your help in advance.

[kaarona1]

Simple fix.

viewtopic.php?f=1&t=50281&p=606735&hilit=brake+booster#p606735

[PaulR]

Simple fix.

viewtopic.php?f=1&t=50281&p=606735&hilit=brake+booster#p606735

Thanks for your response. I replaced the gasket a while back and it's a little better, but not perfect.

[sliDingSolAra...]

Simple fix.

viewtopic.php?f=1&t=50281&p=606735&hilit=brake+booster#p606735

Thanks for your response. I replaced the gasket a while back and it's a little better, but not perfect.

might be a defective check valve, or hose if you hear hissing. check the hose coming on the booster going to the engine (one with the check valve)
hope this helps!

[PaulR]

Simple fix.

viewtopic.php?f=1&t=50281&p=606735&hilit=brake+booster#p606735

Thanks for your response. I replaced the gasket a while back and it's a little better, but not perfect.

might be a defective check valve, or hose if you hear hissing. check the hose coming on the booster going to the engine (one with the check valve)
hope this helps!

Thanks for your help! Next time I get a chance I'll check the hoses in that area.