Still overheating

Wow, thanks for all the advice!

I'll be able to replace hoses and look into the problem further on Friday. Won't have time until then, unfortunately. But on my 4-mile test drive on Saturday, it spewed again. So it's still not good.

But now I'm starting to lean (no pun intended) towards the fuel mixture being too lean. The first mile of my drive was about 45-55mph, then the 2nd and 3rd miles were at 35-45mph, then back to 45-55mph on the last mile. Once the engine was fully warmed up, the temp stayed constant on the bottom edge of the gauge for the two middle miles. Being more confident at that point, I stomped on it a little for the last mile and the temperature creeped up to about 1/3 through the gauge. Dieseled briefly and shut off by itself, then spewed a little.

In reading the carb adjustment section of my manual, it didn't say how many turns from bottoming the air mixture screw to turn the screw out as a baseline for tuning. Just something about getting max idle, then turning back in until you get a dropoff of 20-30 rpm. Other carbs I've gone 2 1/2 or 3 turns out to start with. Would this be a safe bet on the Holley singlejet?

Thanks,

John