[69f bird]

I took my '69 Firebird out last week, for the first time this year. It has a 462, 6x4 heads, stock 69 intake and q-jet. The q-jet was professionally rebuilt two years ago, and at that time it got a new gas tank, 3/8" stainless fuel lines, and new fuel pump. It was hot out, around 90 degrees. I had zero problems with it last year, even in extreme heat.

The car started up fine. After it warmed up a bit, I drove about 5 miles, it was running fine, but then it just stalled. Definitely seemed fuel related. It would not restart initially. After trying to start it for about 30-40 minutes, it finally started, thus making me think it is heat related. I drove straight home, only to stall again about 1/2 mile from my house. This time it took over an hour for it to restart. I drove it the last 1/2 mile and in my driveway it stalled again before I got into my garage. Same 1 hour wait for it to restart. I did remove the fuel filter from the q-jet, thinking maybe it was clogged. No difference.

Fuel was 93 octane premium from last fall, treated with Sta-Bil. I do not remember, but it may have been fuel with ethanol.

Any ideas? I have a vented gas cap, and checked it, and it is fine. All I can think is that the new rubber lines, one near the tank and one near the fuel pump, may have been damaged by the ethanol. Or possibly the fuel pump.

Before I begin changing things, any suggestions or ideas? Any help would be appreciated! Thanks!