MDv6man

Well its time I address the choke/idle and other small details on the carb this week.

However, I have a small dilemma...

My emissions label is MIA since I bought the car and got it on the road. I pulled one off another car to get the vaccum hose routing info but the rest of it was unreadable.

This missing label is preventing me from tuning the carb as every maunual I own says "perform preliminary steps according to underhood emissions label" as the first step.

If someone could post those steps or tell me where I can buy a 4replacement label for a 1983 Federal emission equipped V6, I'd be grateful.

MDv6man

TTT -- ANYBODY?????

qytum

i have an 84 carbed. I'll check tonight if i have any stickers left under the hood and if i do i'll post em for ya

qytum

ok, had nothing else to do

1. Disconnect and plug vacuum hose at EGR valve and purge at canister

2. Disconnect 4 wire connection from the distributer and set ignition timing

3. Fast idle - with throttle at high step of cam adjust to obtain specified speed

4. Fast idle screw - adjust to specified

5. Actuator disconnect and plug vacuum hose at actuator. Connect a vacuum source to actuator and check to see if fully extended Adjust to specified

5. Rehook

***********************************************
Auto Manual
Timing 10* at 600 (DR) 10* at 800 (N)

Fast Idle 2500 (P) 2600 (N)

Idle Screw 600 (DR) 800(N)

Actuator 750 (DR) 1100 (N)

*************************************************

Hope that was what u were lookin for. That was the only other label i had other than the emission diagram

MDv6man

Thanks!

TomP

That drives me nuts. You'd think my GM Service Manual would have a vacuum line diagram- nope! Of course not! It tells me to look at the sticker under the hood- and that was my first hood, long gone, 3 hoods ago.

KED85

That drives me nuts. You'd think my GM Service Manual would have a vacuum line diagram-nope! Of course not! It tells me to look at the sticker under the hood- and that was my first hood, long gone, 3 hoods ago.
General motors has a little department called
LEGAL
AND EPA
These stickers are illegal to reproduce without authorization from GM.
Thus they ain't gonna put an image to be copied in the shop manual.
The specs are provided, somewhere I promise.
JUST LIKE IN MY CASE!
I GOTTA REBUILD MY HOSE SET UP FROM SCRATCH WITH THE PROPER PARTS ON MY FEDERAL 1985 S-10 Blazer!
I CAN'T FIND A SINGLE COMPLETE DIAGRAM IN ALL THE 6 MANUALS (INCLUDING HELMS) I OWN!
Drives me up a wall, too.
Yet, I know why those EPA Hose routing tuning spec radiator support stickers ain't in books. It's all EPA/GM legalities.

I'm STILL AT A LOSS WHERE THE VACCUM SIGNAL FROM INTAKE MANIFOLD GOES! I already have accounted the Power brake booster & that's a correct decision.

MDv6man

It would be nice if GM reproduced em though. I know they do for some but nothing for the 2.8 (any year). Classic industries has em for the 3.1

KED85

WHEN WAS THE LAST TIME YA SAW A 1982-1985 2.8 CARB'D F BODY BEING SHOWN AT A CAR SHOW?!?!?!?!?!!?
No one cares about this old dinosaur in the parts business. The Hot Parts for these rides died back in the late 80's cause ya could still buy a new V-8 ride DIRT CHEAP!!
OF COURSE THERE ARE SOME EMISSION STICKERS MADE.
THERE IS A DEMAND FOR THEM ON
CORVETTES I bought one new for my 1974 a repro.
CAMAROS I'll buy some also for my 1967 & 1968
442's
CHEVELLES
GTO'S etc.

Think I'm not dying for one for my Blazer?
I got my Blazer w/o this sticker on the radiator support.
One Smog testing place said I need have that sticker, too, to pass!
One place said I swapped all this stuff because it's a CA truck & I removed all this stuff.
I show him proof in books & stuff.
This place "wanted to install all the necessary smog stuff" to pass me (right up my a$$$).

You should know what I went thru to pass my FEDERAL VERSION 1974 Corvette thru CA smog tests!
In the end, (for my 1974 Corvette) I LITERALLY WROTE EVERY SMOG TESTING BOOK PUBLISHER SHOWING THEM PROOF ABOUT MY 1974 CORVETTE L-48/AUTOMATIC, FEDERAL VERSION, AND HOW IT SHOULD BE (EVERY BOOK USED BY SMOG TEST PLACE WAS WRONG INFORMATION/COMPONENTS!!!!!).
Next time I went to get my Corvette smogged, I saw my effort paid off as each smog test spec book was corrected!
PS now my 1974 Corvette is SMOG TESTING FREE FOR REST OF MY OWNERSHIP LIFE. Which is a long time!
This is why I do only smog legal swaps in CA, less hassle & the vehicle still runs great! I can't wait to get my Blazer finished for smogging. I miss that ride!

icebird_1981

LOL, i have the same problem, i still got one line with a screw in it because i cant find the info on where it goes. i would not be surprised if i found out that was the reasion for my boggin. since on the topic does any one have a close up pic of there vacume lines. or like a diagram, i'd luv 2 find out what the heck that line goes.

MDv6man

biggest problem for the early v6's was there was not one diagram for all years. Each year was different. My Chiltons manual had diagrams for the vaccum routing. However they are small and pretty tough to read.

CHVYPWR

This is off my old carb'd '83 S-10, hope it helps some!

KED85

THANK YOU!
THANK YOU!
THANK YOU!
My computer broke & I just got it back on line today.
What's really scary is that I can almost make that vacuum hose diagram make sense!.
Atleast now I know where the PVC hose was connected!
I actually have a friend sending me one from Indiana!
I will be printing this out and using it, tho!
REALLY APPREACIATE IT!!!!!
Could you send that photo to my email address, to please!
that way I know I've got it saved on my hardrive.
Really wish these hose diagrams could have been in one of the FIVE shop manuals I got!
Including the HELMS ONE!
What I really await is the one from Indiana, so I could get the part number off the bottom and do a nationwide GM parts search for my Blazer sticker.

Do the Firebirds (1985) have this type of stick on the radiator support, too?

zoomzoom

MDv6man, thanX for the Classic Industries tip. Just got of their web site & downloaded their Firebird catalog........sure as all s**t pg 140 "Emission Decals". :lala:

You have no idea (well actually you do, since you've read all of the above posts) of what I've gone thru tying to get one of those suckers for my '90 3.1

Can't wait till tomorrow to order it. :lala:

MDv6man

You're welcome...

Do me a favor -- when you place the order, ask them if they have them for an 83 2.8 v6 car (maybe they do and it's just not listed)

KED85

Classic Industries
800-854-1280
I just checked my catalog, no not offered.
Only V-6 is the 90-92 3.1
Bummer for me, too. I have a 85 MPFI 2.8 Firebird & the 85 Blazer federal, carb version.
MY GUESS IS, they have to find originals to duplicate.

zoomzoom

The Classic Industries FIREBIRD Catalog list emission stickers for 60° V6's all they way back to '86. Like you said, they are probably duplicating them as they find them. I'm glad they are making the effort as too many manufacturers don't seem bother with the 60° V6's.

I just got off the phone with them & at this point that is as far back as they go. Their Rep said he would check with their manufacturer to see if they made the stickers for earlier cars & if maybe it was just an issue of Classic Industries not carrying them.

He said he'd call me in a couple of days & let me know.

Stay tuned...................

2_point8_boy

makes me glad my car is MPFI. I am going to replace all of the vacuum lines on friday, and there are a lot less on my car. Lets see, there's the one to the EGR, Decel valve, Air Pump, Fuel Regulator, Charcoal Canister, power brakes, and cruise control. I think that's it.

KED85

I had a Classic Camaro in my side draw, so that was my source for my response. And it's a 1999 catalog, too. I never looked for the emission stickers for my Camaros, so this was news to me.
For my 1974 Corvette e-sticker, I went to swap meet and purchased it.

MPFI hose set up is quite easy. I DO SUGGEST remove the TOP PART OF THE MPFI for better access to all hoses. Just take it and roll it over to one side, I recall twisting toward passenger side was best results and NOTHING WAS DISCONNECTED (plenty of stretch for cables and connections)
When I did my "Vacuum rehose job" on my Firebird, I gave in & did that.
Worked much better for the access.
PAY CLOSE ATTENTION TO THE HOSE BY DISTRIBUTOR BASE ON ENGINE BLOCK! That's a 1/2" heater hose and it's short section. The stronger the heater hose, better the result back there.
I used motor oil to lube inside of the hose to make it "fit" over fitting on the engine block.

2_point8_boy

yeah, i was planning on taking the top half of the plenum off. I have to get all new hoses because i have a slightly high idle that causes it to fail smog because it's 100 rpm too high. It must be a slight vacuum leak somewhere in one of the hoses that the computer doesn't pick up and adjust for. Thanks for the info.

KED85

EASIEST CURE MAY BE
to twist distributor toward the front radiator support, to lower RPMs.
IF your engine idles smoothly, now, reduce timing.
A slight vacuum leak would MORE LIKELY cause the engine to idle poorly.
IF ya need a smog guy, I know of an HONEST ONE in Santa Monica.
I know, what a concept, an honest smog station tester.

2_point8_boy

i tried that laready, but the computer i guess senses the change and brings it back up. Right now it idles right around 800, but is a little rough. I also figure that the people that owned the car before me never replaced them, since they look ancient, so i might as well. The other thing that tells me it might be a vacuum leak in a hose is that there is a slight, but constant idle bounce. not very much, but enough to make it rock between 800 and 1000 rpm. it seems to get better after the engine has run a little though. Also, my car needs to go to Test Only. That kinda sux. Oh, sorry for taking the subject to another place for this, but all my posts on this subject were blown off. Hey, but thanks for the help.

KED85

Not really
IF YA LOOK IN LA NOW or probably most in CA, they all Smog "Test Only".
Would you like to vist my smog friend in Santa Monica?
Send an email, give me a bit and I'll contact him to alert him of a new referred customer.
With what ya say, tho, seems like new hoses may help.
Use 5/16" windshield wiper hose to make patches.
The plastic cracks upon "looking at it!" (it's that aged and fragile).
No new replacements of the hard plastic line is not available.
To fit over plastic lines, apply spit to hard lines and slip new hose over, bring in other broken plastic line to connect again.
All the hoses ya truly need be concerned with are at the EGR area, the Throttle body area and to the valve covers (the PVC stuff).
Rest of hoses can pretty much ignore (of course check, but tends not to screw up idle).
WHEN YA CHECK HOSES, make sure ya flip them over and see underside.
Especially at EGR area.
IF the plastic hard lines breaks at a "hard rubber junction block", remove the broken plastic in the junction block. Break off some of the hard plastic line, stick into the juction block, attach 5/16" wiper hose to bring back to proper length.
Really is a quite simple job as long as ALL THE HOSES ARE NOW ATTACHED to the right places.

I spent about $2 on the 5/16" hose.

Again the HARDEST hose to replace is the 1/2" hose short section by the base of the distributor, driver side. It's part of the PVC set up, attaching to the engine block.

KED85

MDv6man
GET AHOLD OF ME
I MAY HAVE A PRESENT FOR YOU!!!

icebird_1981

all u people that have this smog test thing blocking u from getting what u want how come u just dont get a cheat sheet?? no what i mean.

KED85

5 words or less
Don't work that way
Ain't gonna happen

2_point8_boy

what are you talkin' about??? Cheat Sheet? I'm lost...but it wouldn't be the first time. LOL