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3.0 Mercruser fuel economy
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Author:  Banoe [ Fri Sep 28, 2012 7:27 pm ]
Post subject:  3.0 Mercruser fuel economy
What kind of GPH can i expect from a fuel injected 3.0 in a H180?
Author:  Paul I. [ Fri Sep 28, 2012 8:30 pm ]
Post subject:  Re: 3.0 Mercruser fuel economy
Its a boat! We don't worry about that stuff!!
Author:  ric [ Fri Sep 28, 2012 8:34 pm ]
Post subject:  Re: 3.0 Mercruser fuel economy
You'll get 1-2GPH better then a 4.3, and be dogshit slow. 4 people on the boat and you'll max out around 30mph and want to stab people. It sucks really bad. Get the 4.3, you'll do 50mph and cruise at 30 like it's nothing. Parts are cheaper. Easier to fix. It's the best engine for a boat 17-20ft. Get the 4.3GL not GXi. It doesn't break. Ever.

<--Former H180 3.0 owner
Author:  Banoe [ Sun Sep 30, 2012 8:41 am ]
Post subject:  Re: 3.0 Mercruser fuel economy
Well thanks Ric. All ready have the boat and you know what. I am very happy with the performance not disappointed at all, So I guess some of us don't need to go 50mph all the time and suck fuel at $4.00 a gallon.

Any way my gas gauge is broken and I am just trying to get some kind of feel for fuel usage so I don't end up stranded some where.
Author:  ric [ Sun Sep 30, 2012 9:07 am ]
Post subject:  Re: 3.0 Mercruser fuel economy
How about just fix the gauge?
Author:  rpengr [ Mon Oct 01, 2012 1:29 pm ]
Post subject:  Re: 3.0 Mercruser fuel economy
Here are some approximate numbers for a 3.0 injected:
RPM GPH
2000 3.5
2500 4.5
3000 5.0
3500 6.5
4000 8.5
4500 11
WOT 12

With no gas gauge, I would consider using 7 or 8 as an average (or higher for tow sports), then allow about 15 gals reserve.
Author:  Banoe [ Mon Oct 01, 2012 8:04 pm ]
Post subject:  Re: 3.0 Mercruser fuel economy
Thanks, rpengr that will get me through the last couple of weeks of the season.
Author:  ric [ Mon Oct 01, 2012 9:05 pm ]
Post subject:  Re: 3.0 Mercruser fuel economy
Banoe wrote:
Thanks, rpengr that will get me through the last couple of weeks of the season.


Is it the gauge or the sender? Either can be fixed with basic hand tools in under 30 minutes not even breaking a sweat. Don't ride around busted and guessing... just fix it.
Author:  Banoe [ Tue Oct 02, 2012 10:58 am ]
Post subject:  Re: 3.0 Mercruser fuel economy
The boat is new and at the family summer home 60mi away from me and the dealer and warranty repair. I will be getting it winterized in two weeks they can fix it then.
Author:  ric [ Tue Oct 02, 2012 12:58 pm ]
Post subject:  Re: 3.0 Mercruser fuel economy
What year is it? That's only covered in the first by four winns
Author:  ardy [ Tue Oct 02, 2012 9:31 pm ]
Post subject:  Re: 3.0 Mercruser fuel economy
Gidday Banoe
I use around 12 to 15 litres per hour in my carbed version. If I am just cruising ( 3000 to3400 rpm) I think it may even be as low as 11 litres per hour but that is in ideal conditions and loading. It jumps to around 14 to 15 litres per hour if being driven hard for slalom skiing around 4000 4100 rpm. All my boating is done in fresh water.
Hope this helps
Author:  Banoe [ Wed Oct 03, 2012 6:21 am ]
Post subject:  Re: 3.0 Mercruser fuel economy
It is a 2012. 12-15 liters hmmm......Oh 3-4gal, thanks arty, No skiing yet, still breaking things in didn't even blow up the tube that way no one gets any ideas.
Author:  Darin [ Sat Oct 06, 2012 8:53 pm ]
Post subject:  Re: 3.0 Mercruser fuel economy
Paul I. wrote:
Its a boat! We don't worry about that stuff!!



We measure in...gallons per smile. If we measure it at all.
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