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Mercruiser 7.4 mpi twin engines. One Engine will not go over
Mercruiser 7.4 mpi twin engines. One Engine will not go over 2600 rpm while under load. Sometime the rpm's will increase and go back down again. Changed plugs,wires, dist cap & rotor. I'm having the b… read more
Yachtwork
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Technical or Trade School
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Live in Colorado and recently bought a 2007 South Bay
Live in Colorado and recently bought a 2007 South Bay tritoon with the 350 mercruiser engine. Currently have an enertia 48-898988 14 pitch propeller and am only getting 28 mph max. Could you recommend… read more
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1997 SeaRay 37 Sedan Bridge, twin mercruiser 7.4 MPI. Port
1997 SeaRay 37 Sedan Bridge, twin mercruiser 7.4 MPI. Port engine top overhaul/starboard full overhaul. Cannot get more than 32-3400 rpm under load. Have at least 25% more throttle movement with no en… read more
Charles
Charles
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I just water tested a 2008 Sea Ray 230 Fission with the
I just water tested a 2008 Sea Ray 230 Fission with the Mercruiser 350 mag mpi engine with 80 hours and bravo III sterndrive with 22" pitch propellers. At about 40 mph and 4500 rpm the rev limiter ala… read more
Jason
Jason
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I have a 2006 350 MPI Mercruiser Sterndrive with a Bravo III
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Jason
Jason
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Vocational, Technical or Trade School
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I have a 1999 mercruiser 350 mag mpi on a Tige ski boat that,
I have a 1999 mercruiser 350 mag mpi on a Tige ski boat that, under load, will not go past 3500 rpm. In neutral it will go up to 5500. An on the water mechanic checked the plugs, timing, prop, but sti… read more
Jason
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Vocational, Technical or Trade School
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I have a 2006 Mercruiser 350 MPI with Bravo III drive and SS
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Tan
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I am looking at purchasing a 2004, 28 Albemarle Express with
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Jason
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I have a 2006 yamaha t60 engine starts fine but when I engage
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Whitecap36
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bayliner ciera: james i ve install a 454 mpi in my 2855 bayliner
james i 've install a 454 mpi in my 2855 bayliner ,the prop i am running is a 18 inch 4 blade aluminum ,at 26 mph the motor revs at 4000 rpm ,is that a little high, and do you have a sugestion to what… read more
James
James
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Vocational, Technical or Trade Scho
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my 2665 Regal is powered by a 350 Mercruiser Bravo III. I have
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Have a 1992 Bayliner Trophy with 3 liter and alpha leg. Raw
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K. Kergan
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I have a 2003 Mercruiser Mag 350 serial OM587340. Engine idles
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I have 1985 wellcraft 3400 grand sport it well only run 19
I have 1985 wellcraft 3400 grand sport it well only run 19 mph full throttle at 3500 rpm Should run faster.… read more
Jason
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We are thinking about an engine/drive swap on our 2005 bayliner
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I have a 2003 25ft Mustang Sports Cruiser fitted with a 4.3
I have a 2003 25ft Mustang Sports Cruiser fitted with a 4.3 Mercruiser stern drive with 125 hours on it. Fuel consumption seems heavy at around 5 Gals/hr. Is this normal or do I have a problem.… read more
Scott Martin
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Why would my Mercruiser run higher than normal RPM to achieve normal speed
Mercruiser 5.0 MPI W/ Brovo 3 Engine sounds like it is running well. Responsive - not sluggish. As best I can tell does not sound like it is winding out. To achieve 30 MPH it's running about 4800 - 50… read more
Dr. Joe
Dr. Joe
Bachelor's Degree
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what is the approximate fuel consumption for a 6000lb boat
what is the approximate hourly fuel consumption for a 6000lb boat with twin 4.3 mercruisers at 3500 rpm?… read more
Dominick
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Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

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