Ran a VAC test, help with results.

[Rerun]

So I bought a guage for the hell of it to see what I'm getting. I've got a pretty big cam in the thing, it's pulling around 14" sometimes a little lower. The needle seems to bounce with the lope of the cam. When I give it a little gas the vac jumps to around 20+. Is this normal or do I have an issue somewhere.

Just for some notes, I hooked the vacuum guage between the EGR section of the intake manifold and the EGR vacuum regulator.

 

[HISSIN50]

im not sure i follow - the EGR vac is puter controlled. it works a little differently than manifold vac.
i would get vac off the vac tree on the firewall. stockish motor should have 15-20 inches at idle (less with cam).

the vac will decrease as you mash the gas (at WOT, vac is almost 0).

good luck.

 

[Rerun]

There's a vacuum line that comes from the back of the intake manifold to the egr vacuum regulator. From what I understand there's constant vacuum to that, the regulator opens up the second tube which is connected to the EGR and sends vacuum as needed.

I'll try and pull from a tree later. I did a search on the forums for vacuum results doesn't seem like 14 is too bad for a car with a pretty big sized cam in it.

 

[HISSIN50]

ok, i gotcha. sorry about that. i would say 14 is just fine.