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350 mag mercruiser has 2 beep alarm every 60 sec, boat
350 mag mercruiser has 2 beep alarm every 60 sec, boat running good not running hot at all ab … read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
22,043 satisfied customers
How many rpms should I get wot from a mercruiser mag 350?
How many rpms should I get wot from a mercruiser mag 350? … read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
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Boat I have a 1993 or 90 to 3 cylinder outboard motor I'd
BoatI have a 1993 or 90 to 3 cylinder outboard motor I'd like to know what the manual says for air fuel mixture screw setting.And where do I hook up my vacuum gauges to check the sink… read more
Charles
Charles
Certified Mercury Tech
5,752 satisfied customers
I am looking to purchase a new pontoon and would like two
I am looking to purchase a new pontoon and would like two outboards on it. … read more
Charles
Charles
Certified Mercury Tech
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The original boat came whit A 4.3L MerCrusier 6 cyl Engine
The original boat came whit A 4.3L MerCrusier 6 cyl Engine and is being replaced with a MerCruiser 357 Alpha 4V 275HP Engine 5.7 5.7l 350 mag magnum ,now boat did not make any difference in speed afte… read more
Charles
Charles
Certified Mercury Tech
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After a oil change the engines top out at 2500 rpm under
After a oil change the engines top out at 2500 rpm under load. In neutral they easily go up to 4000 They engines have been checked On computer & are fine. Have been told a low oil sensor could cause p… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
22,043 satisfied customers
Hello, we have twin 350 mercruiser mag mpi freshwater cooled
Hello, we have twin 350 mercruiser mag mpi freshwater cooled engines on our 342 Rinker 2004. this weekend we ran for an hour than moored out with some friends it was very hot in the chesapeake...! any… read more
Joe
Joe
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Vocational, Technical or Trade Scho
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How can I purge the fuel system/tank so that I can remove any
How can I purge the fuel system/tank so that I can remove any remaining water? Can I re-use a fuel filter that may have had water in it, if it is emptied and dried? I have a 2000 mercruiser 350 MAG MP… read more
orcamarine
orcamarine
Proprietor
Vocational, Technical or Trade Scho
7 satisfied customers
I have a 2003 mercruiser 350 mag. Cranked too Long on starter
I have a 2003 mercruiser 350 mag. Cranked too Long on starter trying to start and over heated starter. Fixed initial problem (moisture in distributor) but now fuel pumps run continuous and have to cut… read more
orcamarine
orcamarine
Proprietor
Vocational, Technical or Trade Scho
7 satisfied customers
Mercruiser 350 MPI Tow Sport (Black Scorpion) Guardian horn
Mercruiser 350 MPI Tow Sport (Black Scorpion) Guardian horn on all the time, including when just at acc. position on ignition switch. No over heating, oil pressure is good, tranny fluid fine. Changed … read more
orcamarine
orcamarine
Proprietor
Vocational, Technical or Trade Scho
7 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
Marine Mechanic
Vocational, Technical or Trade Scho
4,111 satisfied customers
2009 Honda Outboard 200 4 stroke. Repowered a Tracker Marine
2009 Honda Outboard 200 4 stroke. Repowered a Tracker Marine 25FT Tritoon with this motor. The motor came with a 4 Blade 14 /14 x 17R Prop. At WOT I am turning 5000 rpms and running 38-40 mph and that… read more
James
James
Marine Mechanic
Vocational, Technical or Trade Scho
4,111 satisfied customers
I recently purchased a 2006 Four Winns with a single MerCruiser
I recently purchased a 2006 Four Winns with a single MerCruiser 350 MAG MPI. The first few times boat was running fine, but now the boat will not pass 2000 RPM and max speed of 8 mph. I have replaced … read more
James
James
Marine Mechanic
Vocational, Technical or Trade Scho
4,111 satisfied customers
What is the correct gear ratio for the outdrive on a MCM 5.7Lv8
What is the correct gear ratio for the outdrive on a MCM 5.7Lv8 the boat is a Rinker, Engine serial # XXXXX Trans serial # XXXXX there is a 1.84:1 on at the moment but we think it has been changed, an… read more
capt ron 1959
capt ron 1959
Owner/Marine Mechanic
Vocational, Technical or Trade Scho
348 satisfied customers
we have a 2004 bennington pontoon with a mercruiser 115 hp
we have a 2004 bennington pontoon with a mercruiser 115 hp efi outboard. today we notcied the tach was reading 6000 rpm (i really don't think the motor was reving @ 6000) and it ran more like a speed … read more
Jeremy R.
Jeremy R.
5,362 satisfied customers
My 2003 350 Mag has a warning horn issue. From time to time
My 2003 350 Mag has a warning horn issue. From time to time it will double beep every 30 seconds or so. And at times it will emit a solid beep at high trottle. My dealer is mystified. I am not low on … read more
capt ron 1959
capt ron 1959
Owner/Marine Mechanic
Vocational, Technical or Trade Scho
348 satisfied customers
I have a 1998 Mariah 214 Jubilee with a 350 mag V-8 5.7 litre,
I have a 1998 Mariah 214 Jubilee with a 350 mag V-8 5.7 litre, bravo III with dual 28 pitch props. The engine runs smooth, never hesitates to start when you touch the switch and does not cut out or ru… read more
mercmastertech
mercmastertech
Service Manager, Master technician
Technical School
249 satisfied customers
my 2002 mercruiser 350 mag alarm sounds near top rpm-4600-5000
my 2002 mercruiser 350 mag alarm sounds near top rpm-4600-5000 ,about 4700 she goes off,cuts engine power,then o.k. again till 4700. at dock,can bring it up to rev limiter,5200,before she cuts out. ju… read more
Mechman45
Mechman45
Vocational, Technical or Trade School
152 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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