No cold start......

[rcb280z]

Definitely not experiencing the "hot restart" problem. When I spent some time in Las Vegas (17 years) I had the hot restart problem a few times but not every time. Not sure the outside hot temps has anything to do with it but maybe? I don't recall but has anyone inquired about the daily temps when the issue is present?

As far as the bypass screw goes, you should absolutely see small changes between rich and lean. Drastic changes with the "clock spring" and fine tuning changes with the bypass screw. Wonder if its due to the "pot" you have wired into the cold start circuit.

After I told you 5 hrs last night I decided to double check to see how long she holds pressure and it doesn't even hold for 2 hrs so..... But not an issue yet. When it starts causing a problem I will tackle it. See purs like a happy kitty right now and I am jazzed. Don't know if you read my thread on the emissions test but it's nice to see hard work pay off, for a change. CA is really strict and more so in some counties.

[FastWoman]

RCB, when I do the Hellfire conversion, I'll be installing a wide band O2 sensor. Perhaps I'll be able to see those small changes in mixture then. I'm certain it has nothing to do with the potentiometer.

Yes, I did read your thread about the CA emissions. I am in awe of you Californian Z owners, meeting modern emissions with your antique engines! Well done!