1999 Fountain Twin 500 Mercruiser engines. One engine stalls when it reaches temp

[Fountain1999]

Starboard engine stalls when it reaches operating temp. Changed fuel pump, rebuilt carb, coil, cap, plugs, wires pick up module in the distributor, fuel filter....Any ideas?

 

[bondo]

Ayuh,..... When it dies,..... Go back, lift the hatch, 'n Diagnose whether it's lost it's Spark, or Fuel supply,.....

 

[Fountain1999]

That engine loses spark not fuel.

 

[bondo]

Ayuh,.... So which ignition ya got, T-Bolt V, stock stuff,..??

Ya say ya rebuilt the carb, so it ain't Efi, or Mpi, with 'puter controlled ignition,....

If it is the Merc T-Bolt V, there's a diagnostic tree for it, in the factory manuals,....
I'll look 'round, but I'm on a new 'puter, 'n don't have access to alotta my stuff on my ole real 'puter,....
This chromebook is a 1/2 a 'puter, at best,..... 'tis a cheap way to get back on-line cheaply though,....

If it turns out 1 of the hugely expense nuggets in the T-Bolt has in fact died,....
The Delco Voyager is a super deal on a Great ignition system,.... Weigh the dollars, then decide,...