2006 Mercury Bigfoot 60HP fuel issues

[Lafalanza]

Boat idles fine. After a few minutes of throttling it dies unless you manually pump the bulb. I’ve replaced the spark plugs, all fuel lines, bulb, and tank, both fuel filters, both fuel pumps, coils, and all the injectors. Nothing has changed. Any other ideas? Could I’ve replaced a bad fuel pump with another bad fuel pump? Super frustrating.

 

[chanders]

Boat idles fine. After a few minutes of throttling it dies unless you manually pump the bulb. I’ve replaced the spark plugs, all fuel lines, bulb, and tank, both fuel filters, both fuel pumps, coils, and all the injectors. Nothing has changed. Any other ideas? Could I’ve replaced a bad fuel pump with another bad fuel pump? Super frustrating.

Tank properly vented?

 

[Lafalanza]

Tank properly vented?

I believe so new tank valve is opened

 

[QBhoy]

Hi. Did you clean or replace the strainer on the fuel rail ? Presumably it’s the pumps in the vst you replaced ? Was it assembled properly afterwards ? Sometimes o rings can be the cause of this.
But certainly have a look at that filter strainer in the fuel rail. Presumably there is a strainer on the LP pump intake too.

 

[Lafalanza]

I did not replace the strainer but I did clean it out. I don’t believe I saw one on the LP but I’ll look.

 

[QBhoy]

Oh. Forgot to say earlier. Did you bleed the fuel rail too ?