Disconnect EGR valve?

[ackion]

Thanks, that is what I suspect. That it will run rich. I wonder what it does to the combustion temp. All this stuff seems so closley related.

[300zxt]

I have always suspected that removing it would infact richen the mixture some. I have everything removed from my 86' but I'm deliberately running rich right now so it's not a real good comparison but I would think that your mixture would be richend some post EGR removal.

[ackion]

we do not have emission checks here in Florida, so I can do without the EGR. Does it in anyway make the ECU richen the Fuel. Seems since I bi-passed the EGR it has become very thirsty. Tail pipe seems more black. I do not have a broadband o2 sensor yet.

[84z31]

nothing.

you just won't have as much carbon build-up

[ackion]

reinventing the wheel

Im like a new born baby with its eyes opened. Im really blessed to find this forum. Thank you guys. Im so used to reinventing the dang Z wheel.

[Dan-TSS]

If bypassing it isn't of a concern to you, then simply unbolt it and slip the EGR tube out of the upper plenum. Pop a nickel in between the gaskets and center it to sit there like the tube did, re-assemble.(You're now blocked off, but have the appearance everything is as it was originally)

If keeping the EGR functional is of a concern, verify what is at fault.
EGR valves tend to get sticky over time, Disassemble and thoroughly soak with PB BLaster, work it free and re-assemble.
Another culprit could be the EGR Vacuum Control Solonoid. To validate that this is the issue, when the probelm occurs, unplug the electrical connector leading to the Vacuum Solonoid and if the issue goes away...replace the solonoid with a known working one.

I am skipping over the obvious, vacuum is not leaking from old, loose, or hardened vacuum lines.

[SATAN]

well, as soon as you go to get your next emmisions done then you will fail if it is gone. But if you remove it you will not hurt anything. Its there for emmisions only.

[ackion]

I have a 86 NA. What are the concequences if I remove and block off the EGR valve? If I run vacumn to it, it runs smooth, then like a switch, starts running crappy. If I turn the car off and restart it, it runs smooth till under load, then crappy again. Runs great with the vacumn plugged, but gas milage drops noticiably. I have so many questions, but this is a good place to start. Thanks guys.