84z28350

Ok im just looking to see if my vacume lines are all hooked up correctly. As this car has been hacked on several times even before i have got it im not 100% sure everythings right.

Ill make a ghetto drawing but heres basically what i have going on:

On the carb i have 1 small vacume line which is pluged, 1 large vacume line which goes into the "coffee can" and 1 timed vacume port which also goes to the "coffee can" on the back of the carb it runs a direct line to the brake booster. Then on the back of the intake i have a TEE which goes to my modulator for the TH-350 tranny and the other one runs to the "coffee can"

I also have something very weird going on with my PVC line... It was like that when i got it so i just left well enough alone lol

BTW what is the proper term for the "coffee can"??

Stekman

PCV has no correlation to the fuel evap system (which the coffee can is part of such, it is the vapor canister). It should go directly to a source on the carb or intake.

As important as brakes are, I would not tee anything for it, or off of it. Get a seperate line for the brakes and the modulator.



Figure out what you need and don't need.

Apeiron

Evaporative emissions canister.

84z28350

oh crap, oops i messed up on the diagram, the brakes run off of the big line on the back of the carb and the other one on the tee runs to the canister.

So what should i do with my PCV, Just junk it and put a breather on that side?

Stekman

PCV is one of the things that does nothing but good. I would use it if you can. Find a spare port on the carb or intake (3/8") and go from the valve to there. A breather can go on the other side.

84z28350

ok i have rigged it up with it including the PCV. another thing, should i have some sort of filter on the PCV line?

As you may see i have eliminated a few lines going to the canister and left only the one big one. is this a big problem?

Edit: Just went out for a drive and eliminated the EEC/coffe can, so now the only things running on manifold vacume are the brakes and modulator. I was amazed at how much leaner i had to go on the a/f ratio just to keep it running.

Now it seems to have picked up some low end torque, now i can cruise up hills @ 1500 rpm without dropping much speed and before i had to put the foot in it a bit to keep the same speed.