Hey everyone, I figured out today where my vacuum leak is. Its where the master cylinder meets the brake booster. Is there a gasket that needs replacing or is it more serious then that. I'm thinking that's whats causing my car to feel like its gonna die when my brakes are applied.

Also while cleaning my throttle body I noticed there was oil in it. Any help as to why there is oil in it?

I pulled the sensor that connects to the tranny and its filled with oil. What liquid can i use to clean that safely?

Appreciate all the help!

 

Car/engine info is required. Add to your first post.

Sounds like bad brake booster.

Is it brake fluid or engine oil in the TB?

 

Oh yeah! D16z6 Engine. 93 Del Sol Si.

And It was oil in the TB. Can just the master cylinder be replaced or is it necessary to replace as one?

 

The engine may have a high blow by issue (worn rings), which is causing oil to be sucked into the TB through the PCV system. Is the breather hose connected to the valve cover?

The MC has nothing to do with vacuum. The problem is the brake booster.

 

The VSS?

 

Yes the breather hose is connected.

 

Yes I think its the VSS. Its right in top of the trans. Real easy to get to.

 

The VSS inserts into the differential and has contact with transmission fluid.

 

Oh okay. So i guess that will explain the fluid. Appreciate your help!