Need some help with engine loading up

[Z1Fan]

Guy, you have a throttle body but not throttle body injection (tbi), it's a multi port injected engine.

Has anybody put a scope on any of the sensors and looked at its pattern to see if it's within tolerance ?.

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[GUY_RPM]

No I have not had anything like a scope done at this point. I would think if a injector was clogged it would not run good on the top end as well as out of the hole? The only problem it is having is it does not want to idle or start once engine is hot and the motor has been turned off and I go to restart it will not start without opening up throttle and then once started once I pull throttle back to idle position it wants to quit and the smell of fuel is very evident. The filter inside the air intake was very nasty and could not have been letting enough air into motor and I have replaced it and will try boat out later this week to see of that was the problem.

[GUY_RPM]

Seemed to run ok in the driveway last night.

[Scrib]

Have you had the boat back out ? any update.
My boat is doing the same thing and my mechanic thinks it is fuel vaporizing from the heat.