Broght my new Z home today!

[Mr Blue]

That color is great. It should have been a factory offering. When I was looking, I wanted either Charcoal or Steel Blue, with Steel Blue as my 1st choice. I finally found what i wanted, but, that gray of yours is talking to me. Looking forward to seeing more as you resolve the issues and make it your own. Good Luck

David

[XfireZ51]

Originally Posted by LantanaTX

Thanks, thought maybe it was on its own sealed system. I did inspect the vacuum lines when I had the plenum off and everything looked good. There was a two wire connector near the center under the plenum that wasn't connected to anything and there was nothing for it to connect to. Any idea what this is?

Wasn't there a solenoid just in front of the coil packs that had hoses connected to it? Maybe post a pic of the connector.

[LantanaTX]

Originally Posted by G8nightman

Great looking Z did you get rid of your esprit?

Yes sold it last June to finance a vintage race car restoration that raced such off road desert races such as the Baja 1000, Baja 500 Mint 400 etc, back in the mid '70's. We are racing it in the NORRA Mexican 1000 Vintage off road race next month.

[LantanaTX]

Originally Posted by G8nightman

Great looking Z did you get rid of your esprit?

Originally Posted by Racinfan83

Yeah I LOVE the color! Don't change it!
If someone put a "chip" in the car, (like a Haibeck chip) the power key defaults to the "full power" position. That said - you have a leak if the pump runs full time.
The seats are very easy to remove - there is a u shaped wire on the bottom front of the seat cushion that you push to get it out of the slot that holds it - and bottom cushion comes right out. Four bolts and a couple connectors and they are out. Make sure to lubricate all movement points.
I had the A/C on mine changed over to R-134. See if yours already has been switched. Doing this fixed mine (which didn't work before I had it changed)
Sounds like you have quite the project! Good Luck!

Thanks for the tips! The guy I bought it from intended to covert it to R134 and the car came with the kit to do so. He sold the car because he was working the past two years out of state and had no time to work on it.

[LantanaTX]

Correction, the vacuum pump does not run full time. It is cycling about every 10 seconds. Is this acceptable or still a leak? The electrical connector that was not connected to anything was under the plenum just rear of the two very large rubber hoses in the center. It is a two wire connector which is water proof like all the others. It is coming out of a harness. I found nothing for it to connect to. I think I remember one the wires to be black/pink.

[mike100]

Originally Posted by LantanaTX

Correction, the vacuum pump does not run full time. It is cycling about every 10 seconds. Is this acceptable or still a leak? The electrical connector that was not connected to anything was under the plenum just rear of the two very large rubber hoses in the center. It is a two wire connector which is water proof like all the others. It is coming out of a harness. I found nothing for it to connect to. I think I remember one the wires to be black/pink.

.

What you describe might have been for the gas tank purge solenoid. The secondary solenoid is to the front of the crankcase vent tubes. The hard line for the purge runs to the back passenger corner of the plenum and connects to a 5/16 or 3/8 rubber hose that goes to the tank along the frame.

I don't know why somebody would get rid of that-it vents the pressure out of the tank every time you start it rather than having raw hydrocarbons vent to the air when you unscrew the cap.

[mike100]

I like the paint- no ZR-1's were ever silver or a gray metallic so you will probably never run into the same Z...ever.

[Racinfan83]

Originally Posted by LantanaTX

Correction, the vacuum pump does not run full time. It is cycling about every 10 seconds. Is this acceptable or still a leak? The electrical connector that was not connected to anything was under the plenum just rear of the two very large rubber hoses in the center. It is a two wire connector which is water proof like all the others. It is coming out of a harness. I found nothing for it to connect to. I think I remember one the wires to be black/pink.

I don't know about the electric deal - but I found this in the "solutions" section:
Marc suggests
Evaluating the tightness of the secondary vacuum connections. I like to use the electric pump’s cycle time as an indicator. The pump is calibrated to turn off at 12” Hg. vacuum. The actuators require 6” Hg. vacuum to fully retract. Therefore, if the pump cycles off, there is plenty of margin in the seal of vacuum system for reliable secondary throttle operation. One second of off time is enough to assure normal operation of the secondaries. If the pump stays off longer, it indicates that the system has an extra margin of vacuum tightness. A lot of off time, indicates that the system has a good margin of vacuum tightness. An extra tight vacuum system does not make the engine perform any better than one that allows the pump to stay off for one second.

[We Gone]

Congrats,

As far as original color see if the RPO sticker is still in the car open the rear storage box should be pasted there. If not post up the last of the production #580XXX may be someone knows the car. You can also get a copy of the original build & window sticker from the NCM.

Just fixed my CC the switch to the clutch pedal needed adjustment. Look on ebay or other sources for a FSM it will be your best friend. Lastly I have never found anything that could not be answered by the fellow members here.

[LantanaTX]

Thank you all for the input. I just pulled all the plugs and they were a nice light medium brown. Since I don't have the equipment to scope the engine, I did it the redneck way, which was to use a timing light and move the timing light conductor from wire to wire. I could actually see the misfire in two cylinders which was cylinder 2 & 3. All others looked fine. I believe 2 and 3 are on the same coil pack?

also with 10 second interval of the vacuum pump it sounds like I don't have a vacuum leak per the post above.

BTW, The original color was turquoise. Not even considering changing it back. The car looks great in gray IMHO and it is probably one of a kink.