[Boatist]

Hi this is my first post here so let me know if I do anything wrong.
I have a 1974 blazer and have a problem with it flooding at normal temperature. I first checked the choke and it is wid open. Then I checked the temperature controled valve in the air cleaned input and it is open.

I get black smoke out of the exhaust and gas comming out the top of the carb. So I figured the float in the carburator was not shuting off fuel.
I replaced the Float with a copper one and a new needle valve and seat.

After I replace it it ran good pulling the boat about 100 miles but did die one time is stop traffic but got it restarted to finish the trip. A week at the ocean launching every day it ran perfect. Then on the trip back home made it all the way to our freeway offramp and die before we got to the light. Finally got restarted but black smoke and would hardly run the next 2 miles to the house.

Pulled the float and adjusted lower to shut fuel off sooner. Still go about 2 miles and it starts flooding again.

Anyone got any ideas???

Before this problem the truck had not been run for about 6 months.
I use it mainly to pull my 21 foot boat.

I guess should also say it is a 1974 K5 Blazer with a 350 V8.
Carburator is a Roschester 4MV California Smog.