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I have a 2004 Mercruiser 5.7 250 hp, Alpha one drive, gen 2.
I have a 2004 Mercruiser 5.7 250 hp, Alpha one drive, gen 2. I've seen some info online about “drive showers” / “drive coolers”, and am just looking for an opinion or advice as to whether or not these… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
22,858 satisfied customers
2001 5.0 mercruiser water pump sheared off motor, temp only
2001 5.0 mercruiser water pump sheared off motor, temp only went to 175 but motor would only run low rpm, is that guardian mode or did I hurt the motor … read more
Jason
Jason
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Vocational, Technical or Trade School
22,858 satisfied customers
Background. mercruiser 6.2 mpi 377 . bravo 3, ser 0w004265,
background. mercruiser 6.2 mpi 377 cid. bravo 3, ser 0w004265, '04. has factory installed thru hull pick up added to T fitting between the drive intake and the pump..so the bad news is skimmed across … read more
Jason
Jason
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Vocational, Technical or Trade School
22,858 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
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I have 2001 mercruiser 7.4 mpi that overheats at high rpm.
I have 2001 mercruiser 7.4 mpi that overheats at high rpm. Anything below 3000 rpms is running about 170 degrees. with the seawater input taken off the thermostat housing and a hose put in the housing… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
22,858 satisfied customers
Hello, I have a 4.3 litre V6 MPI mercruiser with Alpha outdrive.
Hello, I have a 4.3 litre V6 MPI mercruiser with Alpha outdrive. Have problems with marine groth in the seawater inlet system through the outdrive and therefore want to convert to direct seawater inle… read more
Noel Schembri
Noel Schembri
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Diploma
2,629 satisfied customers
I need to replace the impellar on my seawater system for my
I need to replace the impellar on my seawater system for my 5.0 Ltr mercury Is there any diagrams showing how? How do you take off serpentine belt?… read more
Noel Schembri
Noel Schembri
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Diploma
2,629 satisfied customers
I have a Mercruiser MCM 7.4 litre Bravo that I replaced the
I have a Mercruiser MCM 7.4 litre Bravo that I replaced the heads and manifolds on last fall. Now the engine runs perfectly, however begins overheating at 2000 RPM and higher. I have replaced the seaw… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
22,858 satisfied customers
i have a mercruiser 350 mag mpi. i revved the engine loading
i have a mercruiser 350 mag mpi. i revved the engine loading on to trailer out of water. next day i put it in, now the engine is running hot. seemes no water is being picked up.. i checked under the b… read more
James
James
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Vocational, Technical or Trade Scho
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My dad has aboat that has a 5 lyer mercruiser with a bravo
My dad has aboat that has a 5 lyer mercruiser with a bravo 3 otdrive in it. I has a seawater pickup that you need to close when you run the enginer out of the water and it is hooked to a hose. He left… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
22,858 satisfied customers
Mercury: I have a searay 355 sundancer 2005 boat with mercruiser
I have a searay 355 sundancer 2005 boat with mercruiser 350 horizon inboard v drive freshwater Twin engines. The seawater reassure at the port side is low and the engine alarms at 2500 Revs. The impel… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
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Have a 1992 Bayliner Trophy with 3 liter and alpha leg. Raw
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K. Kergan
K. Kergan
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Vocational, Technical or Trade Scho
1,031 satisfied customers
We have just bought a 1999 Bayliner 2452 powered with a Mercruiser
We have just bought a 1999 Bayliner 2452 powered with a Mercruiser 350 mag mpi digital ignition (model MCM350MAGMPI). I am winterizing and I am only able to find one drainplug (blue) at the side of th… read more
Dominick
Dominick
Marine Mechanic
Vocational, Technical or Trade Scho
1,009 satisfied customers
Have a 94 Mercruiser 7.4 L (carb) w/Bravo II outdrive. Engine
Have a '94 Mercruiser 7.4 L (carb) w/Bravo II outdrive. Engine will start and run fine for 20 minutes (boat gets on plane with no problem), then motor will start to act like it's going to stall...so I… read more
mercmastertech
mercmastertech
Service Manager, Master technician
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I want to flush the saltwater out of my 350 mag mpi engines.
I want to flush the saltwater out of my 350 mag mpi engines. They are V-drives with seawater cooling. I am about to install closed cooling but want to flush them first. There is a quick connect hose m… read more
Joe
Joe
Owner Kingsland Auto & Marine Services
Vocational, Technical or Trade Scho
1,396 satisfied customers
how do i change the alternator belt on my Crownline boat, Mercruiser
how do i change the alternator belt on my Crownline boat, Mercruiser 3.0 LX 1997. How do i access the seawater pump with the super sport seating?… read more
Captain Dave
Captain Dave
Marine Mechanic
Master's Degree
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Mercruiser Alpha one stern drive. I have installed a new seawater
Mercruiser Alpha one stern drive. I have installed a new seawater pump but get no flow untill about 1500 rpm . any ideas?… read more
davesoutboard
davesoutboard
owner
Associate Degree
1,570 satisfied customers
I have a 1986 Four Winns with a 130 hp 3.0 litre mercruiser
I have a 1986 Four Winns with a 130 hp 3.0 litre mercruiser inboard. The engine runs fine but begins to overheat. The thermostat is working and I have even tried running the engine without the thermos… read more
Larry B.
Larry B.
Marine Service Tech
High School or GED
574 satisfied customers
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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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