boat wont start

[hawkins1]

after running boat with no problems for at least 30 min when you turn it off and let sit for about 30 min it wont start or if it does wont stay running it is an 09 23ft 340hp fuel inj

[kaneboats]

Is it hot out there yet?

[maxpower220]

Do a search for "vapor lock". Likely your fuel pump is absorbing heat from the engine while you are shut down and causing vapor lock.