Brake booster valve

[SpecM]

Anyone know what will happen if I drive with out a brake booster vaccum check valve? Of course I placed a piece of hose in its place, so the booster still gets vaccum.

I know having a check valve is ideal, but mine developed a nasty crack (and vaccum leak!). I cut it out and patched in a piece of 1/2 in fuel line for now. I intend to find a new one and replace it ASAP, just wanted to make sure the car will be safe to drive for a week or so.

It idles fine and I have power brakes

[jlevie]

You will have reduced or no boost if you have to use the brakes while the engine is running well above idle. I wouldn't chance it. You can probably find a one way valve meant for some other vehicle at an auto parts hose that will work. Or you might be able to repair the valve with JB Weld.