egr hookup?

[brownbear]

my 87 sedan failed the emissions test, my NOx was very high.  legal limit is 1121 and it tested at 3224, so from what I have read it comes down to the egr valve.  I removed mine months ago and I put a plate over it.  I am picking up a new one tomorrow and I need to know where to hook it to.  I can't find a good link that will show me.  I have the 2150 upgrade and I read it can be hooked up somewhere on the front of the carb?  I also have this 2 port cto thingy off of the manifold.  Does it matter which port on that cto goes to the egr?  The port closeest to the manifold or the one furthest away?

[ammachine390]

Pretty much what PeterM sent you. Although, since you have a MC carb, the source will probably be in a different spot. Just make sure you use a ported vacuum source. Also, I'm guessing your air cleaner doesn't have the TVS sensors anymore, but that should be OK, just make sure you use the CTO valve. So basically just, ported vacuum source to CTO, and then CTO to EGR valve.

[brownbear]

I don't have the tvs sensors anymore.   So I have to run a ported source to that cto and then a line to the egr.  I thought this would be easier than that, where is a ported vacuum?  I don't know or understand all these ports

[brownbear]

can't just tell what port to use.........

[ammachine390]

I still run a carter, so I don't know where the ported vacuum port is on a MC. However, if you hooked up your distributor correctly, which should be run of ported vacuum, then that port will work ( I am not sure if there is another ported vac port), you would just tee off it.

[brownbear]

I got a new bwd egr valve, does anyone know which orifice washer I'm to use?  I have 2 bags of these washers and I don't have my old egr valve.  I have no idea what these washers do or why I need them.......

[brownbear]

found a port on the front of the carb and ran that to the cto and from the other port on the cto to the egr valve.  I guessed on what orifice washer to use.  Pretty easy intall and the eagle fired right up.  I let it warm up to see if the idle would change and it didn't, so I took it out for 30 min. drive then I stopped to get some 93 oct. gas.  It doesn't run any better or any worse, seems the same, I even still have the pinging when I acc. hard. I thought the egr was supposed to make that go away?  I honestly don't know if the thing even works, since there was no change in performance.  I didn't look, but I'm guessing if I rev the motor I should see the egr plunger go in and out?  Other than that I have no idea if it's doing anything at all.  I will go tomorrow for another emissions test and hope that it passes this time cuz I'm out of ideas.........

[thereverendbill]

i am guessing your timing is off.  retard or advance the timing a few degrees (can't think of what way i went to get the pinging out of my wagon)

[ammachine390]

With the engine revved up and held up, not too high, just like 1500, the EGR plunger should activate. You shouldn't notice a performance difference because they do not activate under full throttle as there is hardly any vacuum at full throttle. The EGR valves on these cars use vacuum and back pressure to activate, so if you have a really unrestricted exhaust system, such as no catalytic converter, it will not function completely correctly.

[brownbear]

I joined this forum and not a silverado forum because I thought there would be hundreds of eagle owners willing to help me with my problems.  I bench press over 400lbs and if I want to reach 500 lbs I'm not going to go to a aerobics instructor I'm going to go to a gym.  When I train someone I don't just throw weight at them and tell them to lift it, I help them and instruct them so they do it right and not hurt themselves.  With that being said when I go to the auto parts stores they have no idea what kind of car I am driving and are no help to me at all, that's why I joined this forum for help not insults.  I have owned 19 cars and have never taken any of them to a mechanic.  I have done ALL the work myself.  This is my 3rd eagle and it is the only one I have done work to in attempts to make it run better.  It is different from any of the other cars I have worked on.  If I knew the answers to something and could help them fix the probelm, I have no problem with giving the guy all the answers he would need.  I would have thought there would have been more eagle owners going through the same issues I am going through and would be willing to help.  If I didn't like these cars I wouldn't have bought another.  Any bit of help is greatly appreciated and if I come acrossed someone who is in need of help and I have already tackled the project,  I will give that person informantion that I know.  I just trying to keep it running for another 25 winters..........

[GRONK]

Late chiming in:  In your instructions, there is a section called: Understanding Vacuum Types and under it it says You MUST Understand This!
It is followed up with how to identify Ported and Manifold vacuum which is the followed by a section called Installing Your EGR

Only you can test this on your carb as all carbs are slightly different in that 2 carbs might have the same vacuum port on the body but one might be ported while the other is manifold.

We have been through your timing issues a couple of times already AND in the instructins it also explains why you want a lower octane fuel vs a higher octane fuel for the emissions test.  You should run 85/87 for an etest, not 91/93.  Higher octane fuels will hurt your emissions test not help it.

[Whuntmore]

I know how you feel sometimes, Brownbear. 

I'm having issues and sometimes people can help, sometimes I'm on my own.  It's not that we don't want to help, it's sometimes we can't.  It's different being there beside you, under the hood and working thru the issues, then being online asking questions, and hoping what we're saying could be right.

I'm willing to help anyone here, if I can help.  Sometimes I'm not much help because of my lack of experience with this car (with most cars, really).

As much as I hate to admit it, you might need to find someone who might be able to lend a hand.

[brownbear]

egr installed AND hooked up right enabled me to pass my emissions test...........thanks to those who helped

[ammachine390]

Glad to hear you got it hooked up right and passed. Congrats.

[jim]

Congrats and a Good Egg for persevering.
I assure you I would have helped if I had known how.