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I have a 2006 MerCruiser 350 MAG MPI Horizon Engine with a
I have a 2006 MerCruiser 350 MAG MPI Horizon Engine with a Bravo Three Sterndrive (Engine Serial 0W620281). PCM is triggering Guardian Fault around 3000 RPM consistently. Used Rinda Tech's TechMate Pr… read more
Jason
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Vocational, Technical or Trade School
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I have a 2005 325 Bayliner with twin Mercs 5.0 MPI Bravo
I have a 2005 325 Bayliner with twin Mercs 5.0 MPI Bravo 3's. Had transom gaskets replaced early this season and a clutch assembly in Starboard outdrive. Ran great for the first two outings. On the th… read more
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I have a 2014 Mercruiser 5.7 fresh water cooled. It
I have a 2014 Mercruiser 5.7 fresh water cooled. It overheated yesterday. I put a gallon of coolant in tonight and ran it. It stayed at 160-170 at dock idling for 15 minutes. I took it for a ride and … read more
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2005 Mercruiser 350 MAG MPI Horizon, engine SN ow370674,
2005 Mercruiser 350 MAG MPI Horizon, engine SN ow370674, transom SN ow461799, Bravo*****SN ow285790. Engine starts and runs fine at the dock. As soon as I shift into drive (fwd or rev) and rev above i… read more
Charles
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I own a 2012 sea ray 280 with Mercury 350 mag seacore. Put
I own a 2012 sea ray 280 with Mercury 350 mag seacore. Put in water yesterday. After about 20 min high temp alarm with guardian mode activated. Dash gauge shows a normal engine temp. No boiling over, … read more
Tan
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Answers from Two Experts requested: I have a 2000 Merc optimax DFI 150 HP Outboard. Every
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Jason
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Hey Jason, I have twin bravo 3 drives with 496 mercs. My Starboard engine runs 30 degrees
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Jason
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I have a 2005 merc 496 mag with an overheat issue. Overheat
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Jason
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I have 350 MPI Mag that overheats at cruze speed. New Impeller
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James
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Overheat problem mercruiser mpi 5.0 2005 smartcraft, searay
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James
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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
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I have a 2001 sea ray 290 sunsport with twin 350 mags mpis,bravo
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Ted G.
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I just bought a used 2002 SeaRay Sundeck 220 with the 6.2 mpi
I just bought a used 2002 SeaRay Sundeck 220 with the 6.2 mpi mercruiser and Bravo III outdrive. We love it. However, at about the 4th or 5th hour of the 7 hours of engine time we have logged since th… read more
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6.2L MPI with Bravo 1 drive - 38 hours. Boat will start OK
6.2L MPI with Bravo 1 drive - 38 hours. Boat will start OK and idle OK. When in foreword gear engine will accelerate up to 2000 rpm and alarms go off. Rhinda Scan tool gives me code 75 (fuel Lvl ckt h… read more
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1999 24.8 Crownline. recently had to replace seapump and mounting
1999 24.8 Crownline. recently had to replace seapump and mounting bracket to the alternator. ever since the work was done the very same alarm that went off when the sea pump blew, goes off approx. eve… read more
capt ron 1959
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I have a 2003 Maxum with twin Mercursier 350 Mag MPI - Bravo
I have a 2003 Maxum with twin Mercursier 350 Mag MPI - Bravo 3's in which I am have an intermitent alarm (2 beeps every minute). The alaram begins as soon as the engine is started. Gear lub reservior … read more
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I have a mercriuser 350 mag mpi the guardian alarm was activated
I have a mercriuser 350 mag mpi the guardian alarm was activated after starting the engine I ran it for several minuets and every 60 secoonds 2 beeps sounded. I turned the engine off and when I restar… read more
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Boat Question - I have a 2005 Sea Ray 280 Sundancer with twin
Boat Question - I have a 2005 Sea Ray 280 Sundancer with twin 5L MPI's and Bravo 3's outdrives. I noticed the port engine was only running at 95deg and the second engine was running around 150 to 160 … read more
Dr. Joe
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Meet the Experts:

Ted G.

Ted G.

Rigger, Diagnostician

2,678 satisfied customers

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

Dominick

Dominick

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1,009 satisfied customers

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

John White

John White

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11 years experience working on outboards, inboards, sterndrives & pwcs

Jason

Jason

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Degree in Marine Technology. Gas and diesel marine mechanic.

Tan

Tan

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40 yrs. experience with complete engine repairs both inboard/outboard and MerCruiser Certified Technician.

Jeff G.

Jeff G.

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4,730 satisfied customers

42 years experience, Certified Master Technician, All Major Outboards, Sterndrives, Hi-Performance

Captain Dave

Captain Dave

Marine Mechanic

2,672 satisfied customers

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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