Hey,

I have a 90 F350, 460 carburated. I am still using the stock fuel pumps with a regulator. I put the engine together about 6 months ago and it runs awesome, but here in the last week its been hard to start sometimes in the morning, and always after I run it for a bit. I put a brand new holley on it when I build it...it is sitting on an aluminum egr blockoff plate. I think it might be boiling the gas since it has warmed up, but something baffles me as this is the same setup Ford used forever without any problems. Any help would be greatly appreciated!

Thanks

Check your fuel filters and carb. The carb may be leaking gas into the engine and give you the symptom of no fuel.

To test leak down pump it two or three times, then try to start briefly. If it doesn't pump 2 more times. If it start up then your carb is leaking gas.

I did forget to mention that it has no power and sputters on anything below 1500...hot or cold it doesnt matter