After having a very bad time keeping the engine running today and nothing would adjust the rear float level... friend of mine told me to check for any dirt inside Pulled the needle and seat unit out of the secondary side and what do I see? Metal shavings on the needle's rubber Stupid simple stuff that I tend to look over sometimes lol lesson learned. Then I had fun with the carb spray making sure everything else was fine. No wonder the silly thing would be fine one day and dumping fuel the next

 

Holley makes it quite clear that they expect you to use the inlet "screens" as well as an in-line filter. For just this very reason.

 

Well, I'm not really sure if they got in there while having the carb sit around in the machine shop or something passed through the fuel lines. Tons of chips fly around in the machine shop so maybe a stray one went down the vent tube from the rag covering it. It was pretty big, doesn't look like it would have passed through any type of filter.

 

I have an actual bary grant fuel line kit for mine, and I know it has the screens built into it so you cant leave them out. Glad you found the problem though.

I know that I am running an 8 psi pump on mine, and my fuel level would climb, but only in the primary's for whatever reason, but I regulated it down, and it stayed fine after that.

Ben