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The starboard eng will go to 2800 rpm sometimes the rpm will
the starboard eng will go to 2800 rpm sometimes the rpm will drop to idel and then come right back … read more
Jason
Jason
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Vocational, Technical or Trade Scho
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Question for if he's around, or anyone else qualified. Fuel
Question for Jason if he's around, or anyone else qualified. Fuel starvation on starboard engine. The entire fuel cooler has been replaced. Have twin 350 mag, 2011, serial numbers 2A147613 and1A630973… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade Scho
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Port diesel fuel tank draws down quicker than starboard
Port diesel fuel tank draws down quicker than starboard tank. When port gauge shows 1/4 full, starboard gauge shows 1/2. Confirmed when refuelling & port took 80 gals & starboard took 46 gals to full.… read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,504 satisfied customers
I have a mercuser 350 mag mpi bwi 1999. When I leave the
I have a mercuser 350 mag mpi bwi 1999. When I leave the boat for a week,It takes 5 to 10 minutes to start the engine.I think the fuel gos back into the gas tank. The people at the marina tell me I ha… read more
Tan
Tan
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I have a 1994 Seria Classic, 2858 with a 454 engine,
I have a 1994 Seria Classic, 2858 with a 454 CID engine, mercruser package. There is a aux fuel tank on the aft starboard side which causes the boat to lean to Starboard. My question is how do I send … read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,504 satisfied customers
I have a 2012 Sea Ray Sundancer 580. It has two fuel valve
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Charles
Charles
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1985 craft Catalina 381 only using. Gas from starboard tank
1985 Chris craft Catalina 381 only using. Gas from starboard tank how do you make it use port tank?… read more
Joe
Joe
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Vocational, Technical or Trade Scho
1,392 satisfied customers
we have 150hp engine that runs starts great. twice we ran the
we have 150hp engine that runs starts great. twice we ran the fuel tank down 8or9 gals and the motor quit, would not restart , primer bulb would not fill and motor would not start. when we filled the … read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
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Engine # ***** 654200 Type; Mercruiser 454 MAG mpi Horizon Build
Engine # ***** 654200 Type; Mercruiser 454 MAG mpi Horizon Build date; 2000 or 2001 Problem details; 2010: First failed to start at fuel dock 3 years ago about the second day the NEW engine was restar… read more
capt ron 1959
capt ron 1959
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Vocational, Technical or Trade Scho
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I have twin mercruiser engines in my 32 boat. At idle and
I have twin mercruiser engines in my 32' boat. At idle and low rpms the engines run smoothly and seem fine. As the rpms increase to 3000 and above the starboard engine lags behind and won't make 4000 … read more
Ted G.
Ted G.
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My 1988 V150 has a figure-8 shaped poppet valve cover--one
My 1988 V150 has a figure-8 shaped poppet valve cover--one larger hole where the poppet valve is and a smaller hole,both in the engine block --the small hole has a plug and o-ring that was just laying… read more
Jeff G.
Jeff G.
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Vocational, Technical or Trade Scho
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I have a 8.1 GXI Volvo Penta in a 2004 3880 Regal boat. It
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Captndon
Captndon
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Hello. I have a 1999 Sea Ray 310 with 5.7L 350 Mag fuel injected
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Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
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Iam buying a 1988 southern cross 44 with d 6v92TI diesels,
Iam buying a 1988 southern cross 44 with d=6v92TI diesels, during seatrial we only got 1750rpm on starboard and 1950 on port ,starboard blew black smoke until 1500rpm is this a major tuneup or are the… read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
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I have a new to me 93 Tiara 27 open with twin 350 Mercruiser
I have a new to me 93 Tiara 27 open with twin 350 Mercruiser in boards. Had new exhaust manifolds put on starboard engine. On the shake down cruise the oil pressure gauge dropped to zero on the starbo… read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,504 satisfied customers
I have twin 350 Mag 2003 my starboard engine keeps shutting
I have twin 350 Mag 2003 my starboard engine keeps shutting down after running at 35000 rpm's for about 30 minutes. THen it will shut down at 30000 in about and additional 15 minutes then at 25000 in … read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,504 satisfied customers
I recently purchased a 1995 Wellcraft 3200 Martinique, with
I recently purchased a 1995 Wellcraft 3200 Martinique, with twin 454 MPI engines, 310 Hp... The boat is in awesome condition... I went on a 40 mile run at 3200 Rpm's with the tanks topped off (81 gall… read more
Dr. Joe
Dr. Joe
Bachelor's Degree
198 satisfied customers
Trouble shooting experts, I had the first opportunity since
Trouble shooting experts, I had the first opportunity since Ike to get the boat out today. Unfortunately, it was not my day. Sequence of events Preparation - Last time out - 2 months ago, everything r… read more
Pappy's Sales and Service
Pappy's Sales and Service
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Meet the Experts:

Dominick

Dominick

Marine Mechanic

1,009 satisfied customers

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

Ted G.

Ted G.

Rigger, Diagnostician

747 satisfied customers

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

John White

John White

Marine Mechanic

306 satisfied customers

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

Jason

Jason

Marine Mechanic

18,277 satisfied customers

Degree in Marine Technology. Gas and diesel marine mechanic.

Tan

Tan

MerCruiser Certified Technician

11,504 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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