2003 Excalibur Stalls During Idle, delays restarting

[jaybird]

Recently my Excalibur has stopped 4 to 5 times while idling over 3-4 days. When attempting to re-start engine turns over but does not immediately start. Once it took 5-6 attempts to re-start. This only happens at idle and the boat is running great. FCC filters were changed 30 hours back. I have drained the FCC no water, checked pressure at fuel rail and it’s fine, around 50 PSI when ignition is turned on, during starting and while running. I can here FCC pump run when ignition is turned on.

Can the idle control module or anti-siphon valve affect or cause hesitation when starting?

I plan to take the fuel pressure gauge with me and next time it stops I will check pressure when I attempt to restart. I just feel the fact that it quits only during idle and then does not immediately re-fire should be a clue as to the culprit, just not sure what. :?: Any Ideas?

[jaybird]

????

[jaybird]

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[j2nh]

Jaybird.
Had something very similar on my 03 excalibur. Engine would fire just fine when cold, ran great, but did not want to restart when warm. It would, sometimes you would have to pump the throttle but it would start.
Dealer sent me some parts which included the R020019 Sender and I think a relay (been a few years but I still have the old sender with PN). Problem solved.
Not sure what the Sender checked but was on the top of the manifold.