[Hirnbeiss]

Could be the pump, but check vacuum first. The thin plastic tubing going to the combi valves gets brittle with age, and is a cheap replacement.

 

[Hirnbeiss]

I'm going to have to sit down and research what you're suggesting..... Thanks!

He’s saying to get a flashlight and hunch over the back side of the engine. First look intently at all the vacuum hoses and lines to see if they’re intact. Personally I would just buy some vacuum hose and the thin hard tubing and replace it all while I’m there. If needed, you can use a Mityvac (handheld sucky thing with gage) to apply vacuum to see if it holds or you have a leak.

Also he is saying check the plastic discharge hose from the SAIP pump, which is nestled up front behind the bumper cover. That hose snakes its way up and back to the combi valves and also becomes brittle with age.

 

[Hirnbeiss]

In case you’re disoriented, start on the bottom picture. That is looking at the engine brom the back and below. The combi valves are those oil can looking things up on the backs of the cylinder head. When you hunch over from the top, you can follow the vacuum tubes that connect to them.

 

[Hirnbeiss]

The thin hard plastic line is sold at Advance Auto as something like “Emission Tubing”. It’s over there in that aisle you know I’m talking about, with the other tubing and small bags of things . Sorry, going from memory.

And don’t feel bad about breaking it - the stuff becomes as brittle as an icicle at this age.

 

[Hirnbeiss]

If you substitute brake line for that plastic, you'll never break another one.

Insert Giphy here of Spock saying “Indeed”