forgot to add early 625 returned fuel to the water sep filter head - the later 625 return the fuel to the tank. With that said when running apps on remote fuel supply that return fuel to the tank - well the remote fuel supply tank when using will run dry in real hurry - actually very fast run the remote fuel tank dry. As I mentioned --- forgot to mentioned that.

You might have possible have vapor lock going on if your fuel is return to the filter head. Again the later 625 return the fuel to the tank - the early 625 returned fuel to the filter head..

Also your fuel pressure should be 55 psi to 58 psi.

Also this model requires 91 octane fuel actually If I recall all V 10s require 91 octane

MAX rpm is 6100 as thats were it is limited Ilmor recs rpm range 5400 --6000

Trying to remember more about these. The past 2 years I have not worked on any V 10s but I use to see and work on these engines including the 710 , - 550 and 725.

I have return lines to the dual tanks, Problem occurs on both or either or tank.
Just had new fuel pump, high pressure filter door and a new fuel/water sep. installed.
Thinking now its electrical.
Just dropped off to have all ing. coils, spark plugs and wires all changed out.

Ive always know "BOAT" means, Bust out another thousand.

But just now figuring out Ive been spelling Boat wrong.

I guess its spelled Boact, the "C" is silent, Bust out a couple thousand.

Bup,
Sure wish I was closet to Dallas/ Ft worth area.
Thanks for the additional info.
I have been in your area a few times now for work installing Air filtration systems in the new Fire houses.
Great area, Just don't know about the summer heat.

Dual outboard 400 hr two strokes with backplates looking better and better. LOL

Does anyone know:

Ilmor MV-10 625.

Ignition coils, and wires.

Are they just stock Dodge/Mopar products?

Or did ilmor actually upgrade the ignition system.

Any info is GREATLY appriciated.

After waiting over 2 weeks for a bosch high pressure fuel pump, I'm now at three weeks for ignition coils. And waiting still.