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Engine SN: OW673430, mercruiser 5.0 MPI, drive serial num OW927662.
engine SN: OW673430, mercruiser 5.0 MPI, drive serial num OW927662. use boat in saltwater, engine is open cooled system using seawater for cooling. Temp are running between 185 and 205 on gauge on boa… read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,409 satisfied customers
2007 mercruiser 5.0 MPI, just replaced raw water impeller,
2007 mercruiser 5.0 MPI, just replaced raw water impeller, thermostat, oil, plugs, drive lube and engine runs smooth but using an IR gun thermometer I get 90F on top of riser, 180-185 on lower sides o… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
22,043 satisfied customers
I have the same problem with my boat,how was this resolved, I changed manifolds,risers, el
I have the same problem with my boat,how was this resolved, I changed manifolds,risers, elbows,sea water pump, sensors thermostat still gets hot engine has only 98hrs… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
22,043 satisfied customers
I bought a 2005 Sea Ray 300 Sundancer two years ago with twin
I bought a 2005 Sea Ray 300 Sundancer two years ago with twin Mercruiser 5.0 MPI. It was a hurricane Sandy salvage boat. It had taken in water in engine room. We took out the engines and rebuilt them.… read more
Charles
Charles
Certified Mercury Tech
5,752 satisfied customers
I have a 2006 Mercruiser 5.0 Liter MPI with alpha one stern
I have a 2006 Mercruiser 5.0 Liter MPI with alpha one stern in a 2006 Mariah SC23. The boat was winterized and I opened it up today. I hooked up the earmuffs and the engine started up right away no pr… read more
Charles
Charles
Certified Mercury Tech
5,752 satisfied customers
I'm pat we have a sea ray 205 with a mercruiser 5.0 mpi
Hi I'm pat we have a sea ray 205 with a mercruiser 5.0 mpi has no power down the boat doesn't over heat runs smooth and when gets up too speed it's fine… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
22,043 satisfied customers
Have 2005 245 Sea Ray Mercruiser 5.0 Bravo 3 with overheating
Have 2005 245 Sea Ray Mercruiser 5.0 Bravo 3 with overheating problem and boat sat for a year. We just put in water, drove 15 minutes with no problems, then all of a sudden it overheated. We stopped b… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
22,043 satisfied customers
I purchased a used 2003 Sea Ray 220 Sundeck last week. The
I purchased a used 2003 Sea Ray 220 Sundeck last week. The engine only has 150 hours on it, and it runs really good. However, after a good run at 35MPH for 10 minutes or so, the oil pressure gauge dro… read more
capt ron 1959
capt ron 1959
Owner/Marine Mechanic
Vocational, Technical or Trade Scho
348 satisfied customers
I have a 2004 MerCruiser 5.0 L MPI. The bilge was flooded
I have a 2004 MerCruiser 5.0 L MPI. The bilge was flooded with rainwater and the water level came up to 3 1/2" below the crank shaft, 1/2" below the crank shaft pully (sat for 2 weeks). The drive is a… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
22,043 satisfied customers
I have a Mercruiser 5.0 MPI on a 2005 Sea Ray 200 Sport. I
I have a Mercruiser 5.0 MPI on a 2005 Sea Ray 200 Sport. I have just gone over 153 Hours exactly 100 Hours from when I purchased. When I move the Key from Off to On there is a "Beep" this is normal. A… read more
dieselhub
dieselhub
39 satisfied customers
Hi there I have a 5,0 Mercruiser MPI with a alpha one drive
Hi there I have a 5,0 Mercruiser MPI with a alpha one drive with seawaterpump in it. I would like to modify the seawater system and install an engine mounted drivebelt driven seawaterpump. Can I use t… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
22,043 satisfied customers
Im looking at 2002 Crownline 239 DB Bowrider with a Mercruiser
I'm looking at 2002 Crownline 239 DB Bowrider with a Mercruiser 5.0 MPI with 260 hp and a Bravo III outdrive with 349 hours on it. How much more life can we expect from this engine?… read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,409 satisfied customers
Mercruiser 5.0 EFI - Guardian mode with low seapump PSI
I just had my engines serviced (by a mercruiser shop) and having some subsequent problems. Frustrated with the shop, so I'm looking for another expert. 2003 Mercruiser 5.0 MPI that is going into guard… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
22,043 satisfied customers
I have a 2000 sea ray 340 with twim 7.4 newly installed in
I have a 2000 sea ray 340 with twim 7.4 newly installed in 2009 both by sea ray dealer .. ran the boat for 3 hours yeasterday and just before geting in the lifters sarted to tap on the starboard eng o… read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,409 satisfied customers
i have a 2003 mercruiser 350 m.p.i. in a 2003 sea ray 260 sundancer
i have a 2003 mercruiser 350 m.p.i. in a 2003 sea ray 260 sundancer with a bravo 3. an alarm beeps twice every 60 seconds. water temp o.k. oil pressure o.k. final drive oil o.k. engine oil o.k. engine… read more
James
James
Certified Marine Mechanic
Vocational, Technical or Trade Scho
4,094 satisfied customers
I own a 2006 Sea Ray with a 260 HP 5.0L MPI AL Mercruiser engine. What
I own a 2006 Sea Ray with a 260 HP 5.0L MPI AL Mercruiser engine. What are normal operating ranges for oil pressure and water temperature?… read more
Captain Dave
Captain Dave
Marine Mechanic
Master's Degree
2,672 satisfied customers
i have a 275 sea ray (260da) powered by a 5.0 l 260 hp mpi
i have a 275 sea ray = (260da) powered by a 5.0 l 260 hp mpi on a b3 leg ,fuel consumption 55 lt- 60 lt an hour 4000 rpm with a boat speed of 25 kn Q. Is this a standard consumption rate or do i have … read more
Dominick
Dominick
Marine Mechanic
Vocational, Technical or Trade Scho
1,009 satisfied customers
I have a mercruiser 5.0 sterndrive MPI and the 15 amp (blue
I have a mercruiser 5.0 sterndrive MPI and the 15 amp (blue plastic coated) blade fuse located in a rubber 6 fuse housing located at the top rear of the engine has blown 3 times in 5 outings. The engi… read more
Mechman45
Mechman45
Vocational, Technical or Trade School
152 satisfied customers
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Meet the Experts:

Ted G.

Ted G.

Rigger, Diagnostician

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40 years boating, Safe boating instruct., Offshore Race promoter, Failure Analysis, Expert Witness

Dominick

Dominick

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25 Years Experience as Mechanic, 20 Yrs Boat Yard Owner/Mechanic, Factory Certified

John White

John White

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Jason

Jason

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Degree in Marine Technology. Gas and diesel marine mechanic.

Tan

Tan

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Jeff G.

Jeff G.

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Captain Dave

Captain Dave

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USCG Licensed Captain, 20+ Years Boating, Fishing, Maintenance and Repair Experience

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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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