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We have a 91 370 sea ray with 2 454 mercruiser vdrives. We
We have a 91 370 sea ray with 2 454 mercruiser vdrives . We were traveling on plane no issues and the sync Guage started bouncing and suddenly seconds later starboard made a loud bang and completely q… read more
Noel Schembri
Noel Schembri
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Diploma
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My boat is stalling when shifting out of and back into
Good morning, my boat is stalling when shifting out of and back into neutral. This is happening intermittently. Mechanic insists it's not interrupter switch or shift cable, boat does "click" when shif… read more
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Shane Creekmore
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High School or GED
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I just purchased a 1986 Sea Ray 340 sedan bridge and would
I just purchased a 1986 Sea Ray 340 sedan bridge and would like to replace the sea water pump and alternator belts on both engines but cannot find information on how the belts are tension-ed. In parti… read more
Jason
Jason
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I have a 2012 sea ray Sundancer with 8.2l mercruiser sea
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Jason
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I have a Sea Ray 300 Sedan Bridge with twin 260HP Mercruiser
I have a Sea Ray 300 Sedan Bridge with twin 260HP Mercruiser Inboard engines. They run fine but the port engine idles at 1000RPM and the starboard at about 700 how do I synchronize the two engines? … read more
Jason
Jason
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I own a 1989 38 ft. Sea Ray aft cabin with twin Mercruiser
I own a 1989 38 ft. Sea Ray aft cabin with twin Mercruiser 454 cid 350 HP V-8 gas engines, 7.4 L. Boat was driven from Boston to Newport, RI on June 20th. Starboard engine would stall during docking; … read more
Tan
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I HAVE TWIN MERCRUSER MIE 7.4L WEBER 4BB CARBS AND ELECTRIC
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Jason
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I have a 1997, 7.4 MPI Blue Water, inboard #OK261210, in a
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Gina-Moderator
Gina-Moderator
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Hi, I have a 2006 Searay Amberjack 290 with twin T-VD-350 Mercruiser
Hi, I have a 2006 Searay Amberjack 290 with twin T-VD-350 Mercruiser Marnum MPI Horizon engines (T-300 hp). It is inboard/v-drive, fuel injected, and has the Mercruiser Smart Craft System. The engines… read more
Ted G.
Ted G.
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I have a 1985 Sea Ray 340 Sedan Bridge boat. The engines were
I have a 1985 Sea Ray 340 Sedan Bridge boat. The engines were replaced in 2004. They are 454 BB gas engines. The engines were not idling as I wanted them to, so I had both carburators rebuilt. Both en… read more
orcamarine
orcamarine
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Twin 454 (340HP) in a 1987 Sea Ray 340SD. Both engines start
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Whitecap36
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I have a 92 Sea Ray with a Mercruiser 4.3 V6 with Thunderbolt
I have a 92 Sea Ray with a Mercruiser 4.3 V6 with Thunderbolt ignition. The problem that I am having is when I am going across the water sometimes it seems to knock when I go to throttle up. It could … read more
Jeremy R.
Jeremy R.
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Have a 260hp mercrusier io with thunderbolt ign. 1800hrs Before
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Jeff G.
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I have a 1987 Searay with twin GM 4.3L with thunderbolt ignition. Changed
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Master Tech
Master Tech
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My 454 magnum, 1990 will start and seems to run fine to about
My 454 magnum, 1990 will start and seems to run fine to about 2500 rpm. then it has severe backfiring. I have checked/replaced fuel and water filter, plugs, distributer cap. I have not checked/replace… read more
Joe
Joe
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I have a 1995 Sea Ray 30 with twin 350s, 5.7L. mercruisers
I have a 1995 Sea Ray 30 with twin 350's, 5.7L. mercruisers that once they come up to temp and when they stall they are very hard to start. Its like they are not getting fuel, I've tried just turning … read more
Master Tech
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i have a sea ray 370 da with carbs.i just hade the carbs rebilt
i have a sea ray 370 da with carbs.i just hade the carbs rebilt one of the engins seams like it is missing some cylenders some times and i get some nocking on and off.what can i check...… read more
Dr. Joe
Dr. Joe
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I have twin 5.7 Mercruiser I/Os with Bravo II outdrives.
I have twin 5.7 Mercruiser I/O's with Bravo II outdrives. I am having trouble with the engines stalling while cruising at low speed. Once an engine stalls, it will not always immediately restart. I ha… read more
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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

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

22,043 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

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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