3.0 Mercruser fuel economy

Banoe · **Joined:** Tue Sep 11, 2012 7:41 pm **Posts:** 10

What kind of GPH can i expect from a fuel injected 3.0 in a H180?

Paul I. · **Posted:** Fri Sep 28, 2012 8:30 pm

Its a boat! We don't worry about that stuff!!

ric · **Posted:** Fri Sep 28, 2012 8:34 pm

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

Banoe · **Joined:** Tue Sep 11, 2012 7:41 pm **Posts:** 10

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.

ric · **Posted:** Sun Sep 30, 2012 9:07 am

How about just fix the gauge?

rpengr · **Posted:** Mon Oct 01, 2012 1:29 pm

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.

Banoe · **Joined:** Tue Sep 11, 2012 7:41 pm **Posts:** 10

Thanks, rpengr that will get me through the last couple of weeks of the season.

ric · **Posted:** Mon Oct 01, 2012 9:05 pm

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.

Banoe · **Joined:** Tue Sep 11, 2012 7:41 pm **Posts:** 10

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.

ric · **Posted:** Tue Oct 02, 2012 12:58 pm

What year is it? That's only covered in the first by four winns

ardy · **Posted:** Tue Oct 02, 2012 9:31 pm

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

Banoe · **Joined:** Tue Sep 11, 2012 7:41 pm **Posts:** 10

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.

Darin · **Joined:** Sat Sep 15, 2012 1:58 pm **Posts:** 12

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.

www.iFourWinns.com

3.0 Mercruser fuel economy

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