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I have twin Merc 350 Mag Mpi engines with smarcraft. I keep
I have twin Merc 350 Mag Mpi engines with smarcraft. I keep getting an overspeed alarm on the port motor at 3500 rpm. The stbd engine is fine. A new computer has been installed and still have the same… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
19,343 satisfied customers
Jeremy, we have a 2008 Sanger V215 with the black scorpion
Jeremy, we have a 2008 Sanger V215 with the black scorpion 5.7 350 mag engine. Two minute warning alarm came on at about 168 hours, took it in, replaced the water pressure sensor, as that is what code… read more
Charles
Charles
Certified Mercury Tech
5,378 satisfied customers
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
Charles
Certified Mercury Tech
5,378 satisfied customers
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
Marine Mechanic
Vocational, Technical or Trade School
19,343 satisfied customers
Guardian mode on 2006 mercruiser 350 mag horizon mpi with closed
Guardian mode on 2006 mercruiser 350 mag horizon mpi with closed loop cooling. After about 30 minutes of running at any speed, it throws a continuous alarm and goes into guardian mode limiting RPM to … read more
briggs archer
briggs archer
master marine mechanic
Associate Degree
374 satisfied customers
I have a 2011 8.2L mercy stern drive and I'm getting a
Hi, I have a 2011 8.2L mercy stern drive and I'm getting a fault sensor on the smart craft system. Had the same thing last year and replaced the impeller and housing and fixed the problem. 4th trip ou… read more
briggs archer
briggs archer
master marine mechanic
Associate Degree
374 satisfied customers
I have a 2005 sea ray 260 that I purchased new. It has a merc
I have a 2005 sea ray 260 that I purchased new. It has a merc 6.2 horizon bravo three drive with 350 hours. The boat has always been in fresh water. Boat has new impeller every two years. The past thr… read more
orcamarine
orcamarine
Proprietor
Vocational, Technical or Trade Scho
7 satisfied customers
Hello, i have a Master Miami 22 with a mercruiser 6.2 mx mpi
Hello, i have a Master Miami 22 with a mercruiser 6.2 mx mpi 2003 mod with Bravo 1 drive and a 25" mirage propeller. The engine is bougt in parts and overhauled this winter. It was earlier mounted in … read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
19,343 satisfied customers
I have 350 MPI Mag that overheats at cruze speed. New Impeller
I have 350 MPI Mag that overheats at cruze speed. New Impeller and new exchaust manifold. I cahnged the manifolds thinking it was the problem. The DDT tells me starboard overheat. I took out the circu… read more
James
James
Certified Marine Mechanic
Vocational, Technical or Trade Scho
4,094 satisfied customers
2004 8.1 horizon - overspeed alarm after operation at 1,500
2004 8.1 horizon - overspeed alarm after operation at 1,500 + rpm. replaced crank sensor, still getting alarm. oil prssr good, water psi good, no heat, rpm constant, transmission feels fine, prop chec… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
19,343 satisfied customers
I have a 4.3L MPI engine that is showing seawater pressure
I have a 4.3L MPI engine that is showing seawater pressure of around 2.5psi. When the engine reaches 3500rpm the engine guardian engages and I get an overspeed fault. The engine is not actually over-r… read more
Jeremy R.
Jeremy R.
5,362 satisfied customers
I have a Volvo Penta 5.7L (EFI -350), with a DP sterndrive
I have a Volvo Penta 5.7L (EFI -350), with a DP sterndrive duoprop. I have a recurring problem with my alarm going off sporadically at high RPM's. The alarm is a constant beep. I bring it down off pla… read more
Jeremy R.
Jeremy R.
5,362 satisfied customers
I have a 1999 Gekko ski boat (inboard). After running if for
I have a 1999 Gekko ski boat (inboard). After running if for a couple hours last weekend, I parked it for a couple hours. When I came back to started it, the alarm from the engine started to sound and… read more
ROCKET
ROCKET
MASTER CERTIFIED TECH
Vocational, Technical or Trade Scho
426 satisfied customers
engine wont start oil looks good maintenance up to date mechanic
engine wont start oil looks good maintenance up to date mechanic said hydrolocked, maybe due to impeller failure, but temp gauge never over standard oerating temp and no alarms mechanic say head gaske… read more
gearheadII
gearheadII
Bachelor's Degree
138 satisfied customers
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
ROCKET
ROCKET
MASTER CERTIFIED TECH
Vocational, Technical or Trade Scho
426 satisfied customers
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
Dr. Joe
Bachelor's Degree
198 satisfied customers
Hi, i hav eproblem with my mercruiser 350 MAG MPI 2006, the
Hi, i hav eproblem with my mercruiser 350 MAG MPI 2006, the water preassure indicates me that the pressure is very low, i changes the sensor twice but nothing happened, the engine do not overheat an r… read more
ROCKET
ROCKET
MASTER CERTIFIED TECH
Vocational, Technical or Trade Scho
426 satisfied customers
have a new 350 mag mpi that sat in a dealer lot for the past
have a new 350 mag mpi that sat in a dealer lot for the past 3 years... their mechanics went through it and it ran fine on the lake test. about 1 hr in to the break-in the temp gauge spiked and I had … read more
Captain Dave
Captain Dave
Marine Mechanic
Master's Degree
2,672 satisfied customers
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