IrocTheZ28

Does it go above the fuel rail or below it? It's a little deceptive to me as I'm finalizing the fuel rail assembly.

One booted end near the center of this pic belongs to a plenum port I believe?

The other end nearest the #1 injector cracked off and I'm wondering where that actually goes...

Chevy86 IROC-Z

iTrader: (17)

Need help? Check out this thread I started a while back. It has everything you need including a Vac. Line Diagram. Peace.

https://www.thirdgen.org/forums/tpi/...rs-i-need.html

IrocTheZ28

Awesome! This may help me out actually. It's dark out and the Trick Or Treaters are preventing me from finishing this vacuum line job...

I will most likely attack this vacuum routing very soon and will give ya a shout & post more pics if I run into problems. I know there are 2 broken lines I must fix in order to save myself a headache after firing this 305 up!

Btw... I figured out the single booted end in my pic belongs to the EGR valve. Thanks to your thread and very much appreciated!

Chevy86 IROC-Z

iTrader: (17)

Glad to help.

joe2844

question for you guys, where the pcv valve hose connects to the intake manifold on drivers side, im not getting any vacuum there, it actually pushes air out from that port. does urs do the same or no? any ideas why mine does this?

Chevy86 IROC-Z

iTrader: (17)

Good question. Does anybody have an answer? Sorry buddy, I would pull my pcv valve hose off to test mine but my IROC isnt running yet.

Murphy-Iroc-87

Hey i know this post is a lil old but yes. its Positive crank case vent. its supposed to push the air out or it would build up pressure.

1989 iroc-z 5.7

I was haveing the same trouble with mine but I found this diagram online and here is a link to the page http://theking.joakimweb.se/z28/tech.htm this page has a few things that might point us in the right direction

jsting7

hi guys am kind a new
in this website so I would make this as simple as i can, i need to know where this vacuum lines go to,is for an iroc z 86 305 TPI is the one that is close where de EGR is locate I know one is for the EGR but the other one where it goes?it come from the TPI and the same one comes from the canister but where it goes any help thank you so much






(i use the picture form someone else I don;t know how to upload the iroc 861pictures)

Curly_e13

Hi I have a 1989 Iroc z28, had 1 question... Does the vacuum hose from the fuel regulator have a little metal balll inside the hose?

Chevy86 IROC-Z

iTrader: (17)

Nope. There should be nothing in there.

88GTAMikePantel

Hi I have a 88 GTA A friend took everything off my motor. So he forgot how to put it back and has now died. I have no clue how to put it back together. I had on mechanic look at it and said there is no direction on where things go and he doesnt want to attempt it. I am screwed. I need some sore of diagrams that will show where thing go and connect to what. Is there anyone that can send me pictures of where wires go vaccume lines and hoses etc. I would be greatfully appreciate this. I would like to get it running. This car has never seen winter of course but it hasnt seen summer for the past 5 years.


Mike Panteluk

KR81

Hi Mike, here is a vacuum hose diagram I found here on the forum, should work for you, I have an 88 too and this is basically the same set up, this diagram however, omits the hose going to the cruise control servo. Hope it helps.

88GTAMikePantel

Thank you Do you have any other pictures of how this engine wires and sencers hook up.

Please and Thank you

Mike Panteluk