Well guys, I have a Holley tuning question. I haven't done any research yet, I am going to get some books and dig in but I thought I would throw a question out here.
I have a marine 750 and it runs great at idle and a little off idle, and wide open, the trouble is when I back the throttle down from wide open down to 3500 RPM it starts back firing and looses power. When I pump the throttle a bit and hold it, it cleans right up. Sounds like its going lean.
So any obivous things I should look at? Is it running on the mains at that range? Thanks