if you need to floor it to restart , its flooding. lower the float levels on both primary and secondaries. Lower until you can just see it in the site window, i aways did this with it running,drop level till you cant see it in window m then bring back up until you can just see it splashing at the bottom of window. is this a Holley ? if that doesnt work the float valve is sticking open remove and replace.The other thing ive seen is if they are brass floats , over time they can leak and get to heavy to float., replace wiith foam floats.