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My flapper in the exhaust is not preventing water from
My flapper in the exhaust is not preventing water from coming up into the engine. … read more
Jason
Jason
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Vocational, Technical or Trade School
22,804 satisfied customers
I had hydro lock on a mercruiser 7.4L v8. Boat has done 35hrs in 14 years. It has been tr
I had hydro lock on a mercruiser 7.4L v8. Boat has done 35hrs in 14 years. It has been trailered and under cover most of that time and looks brand new. I was reversing the boat at the time and then I … read more
Jason
Jason
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Vocational, Technical or Trade School
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Hi,We have a 2005 Rinker 360 with 496 mercs and have had water
Hi,We have a 2005 Rinker 360 with 496 mercs and have had water in the cylinders in both port and starboard sides, what's the best fix? Thanks Andrew… read more
Tan
Tan
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Certified Marine Technician
11,409 satisfied customers
Im getting water coming back in my exhaust in both motors.
I'm getting water coming back in my exhaust in both motors. I have an 1989 2959 Bayliner. It sets low in the water because it planes. Do they have anything to replace the old flapper that is letting t… read more
Tan
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I have a 1994 MasterCraft v-drive ski boat with factory exhaust
I have a 1994 MasterCraft v-drive ski boat with factory exhaust including Ultimate silencer muffler/watertraps.If I remove the mufflers and replace them with straight through pipes,do I need to be con… read more
Jeremy R.
Jeremy R.
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I have a Rinker 232 with a mecruiser 5.0l alpha one engine
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Noel Schembri
Noel Schembri
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My name is Phil DeSarno and I have a 1998 Silverton 372 aft
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Jeremy R.
Jeremy R.
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I have a 2002 350 Horizon MPI (Self contained), it recently
I have a 2002 350 Horizon MPI (Self contained), it recently hydo-locked (fresh water) thought it was abad starter and then realized the motor was seized pulled the plugs and equal amounts of water in … read more
Jeremy R.
Jeremy R.
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Hi.I have a 7.4 litre mercruiser which has a new motor, The
Hi.I have a 7.4 litre mercruiser which has a new motor, The problem is that when you put the rear of the boat in the water it shuts the exhaust of and stops the motor. If you only put the leg in far e… read more
Noel Schembri
Noel Schembri
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My 69 Arenacraft is equipped with a Mercruiser 160 I/O. The
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K. Kergan
K. Kergan
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I have a 2000 Searay380 AC with 7.4 Mercruiser Horizons with
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James
James
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I am trying to fix a problem with water in the manifolds, causing
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Tan
Tan
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I have a 30 rampage which had water intrusion in one engine
I have a 30 rampage which had water intrusion in one engine which was replaced and was told to put 6inch risers on new engine and other engine.which was done. then both engines had water intrusion its… read more
shane j forrest
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Hey Guys, I have pentas 8.1 GIs 2003 375 HP.. I still am
Hey Guys, I have penta's 8.1 GI's 2003 375 HP.. I still am having a problem with the portside manifold and riser on the starboard engine. This riser and manifold are @ a temperature of approx 175+ deg… read more
Dominick
Dominick
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Have a Carver 42ft Aft Cabin with two 7.4L MPI Gas Engines
Have a Carver 42ft Aft Cabin with two 7.4L MPI Gas Engines and wet exhaust system. Recently, when the boat is underway at a low RPM (20-30), the starboard side exhaust sounds louder than the port side… read more
Captain Dave
Captain Dave
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1984 235 HP 5.0 over heats, stbd side flows better than port,
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I found an old water shutter in my exhaust port. Where are
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Dominick
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Recently, I experienced water in cylinders of both of my mercruiser
Recently, I experienced water in cylinders of both of my mercruiser mag 496's....2005 models (not sure of SN), this happened as I came off of plane. I heard that the early models didn't have flappers … read more
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Meet the Experts:

Ted G.

Ted G.

Rigger, Diagnostician

3,332 satisfied customers

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

Dominick

Dominick

Marine Mechanic

1,009 satisfied customers

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

John White

John White

Marine Mechanic

306 satisfied customers

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

Jason

Jason

Marine Mechanic

22,804 satisfied customers

Degree in Marine Technology. Gas and diesel marine mechanic.

Tan

Tan

MerCruiser Certified Technician

11,409 satisfied customers

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

Jeff G.

Jeff G.

Marine Mechanic

4,730 satisfied customers

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

Noel Schembri

Noel Schembri

Marine Mechanic

2,759 satisfied customers

Advanced technical diploma

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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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