350 MPI Bravo 3 Power Lose

[JAK II]

I left the Captains call on for a week and it drained the battier I jump started the battier twice once to start it at the dock the other time I shut off the engine after running 15 minute to see if it would start. I notice a loss of power coming back to the dock and turned off everything electrical and it picked up power, now it losses power after a few hundred yards. Start with no problem and will run at low RPM however if you apply fuel it bogs down but does not stall I have checked the follow items.

1. Water Fuel filter took off and drained into glass jar No Water
2. Put a new in-line fuel filter on
3. Took the gas cap off to check vacuum, boat still lose power
4. Check fuel vent for blockage no blockage
5. New fuel pump in June of 09

Any other suggestions before I take it to the shop?

 

[Bondo]

Re: 350 MPI Bravo 3 Power Lose

Ayuh,... Being a MPI motor, it needs FULL battery power to run Right...

 

[JAK II]

Re: 350 MPI Bravo 3 Power Lose

Thanks, that the one thing I did not check since it started without any problems, I will walk down this afternoon pull the battier and replace it today as you can see I have been testing everything I thought was a fuel problem thanks to the help of I-Boat, you guys are the best.
I?ll let you know the new battier works.

 

[JAK II]

Re: 350 MPI Bravo 3 Power Lose

OK I had the battier tested and it's good 95% 12.8 amp at 800 cranking Amp now what?