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I have a 2015 Yamaha 242 limited S. The starboard engine
Hello, I have a 2015 Yamaha 242 limited S. The starboard engine overheat light came on while flushing with the hose. A lot less water comes out of the starboard water drain under the swim deck compare… read more
Ted G.
Ted G.
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Vocational, Technical or Trade Scho
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My 454 marine engine on the port side overheats at gher rpm.
My 454 marine engine on the port side overheats at higher rpm. We installed a new impeller and back flushed the heat exchanger. We also took off the riser and cleaned it with acid and replace the exha… read more
Jason
Jason
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Vocational, Technical or Trade School
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Tan here is a follow up based on your suggestions... The
Tan here is a follow up based on your suggestions... The pressure test of the cooling system did not reveal any real issue. There was a slight drop in pressure of the port engine but very very close t… read more
Tan
Tan
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Horizon Mag 454 HO on a Sundancer 380/2000. Both engines have
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Tan
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We have a Maxmum 3300, year 2000, with twin mercrusier 305
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Jason
Jason
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I have an 2001 LS 2001 w/twin 135hp motors. The starboard motor
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Abiorca
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I have a 1974 mercruiser ford 302, raw water cooled with
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Jason
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I have a 1999 Stingray with a 4.3 mercruiser sterndrive. I
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Jason
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My 1988 V150 has a figure-8 shaped poppet valve cover--one
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Jeff G.
Jeff G.
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I have a 2006 yamaha 60 horse four stroke outboard. the tell
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Jason
Jason
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my engines do not circulate water, just overheat and shut off.
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Jason
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5.7L raw water cooled. Starboard side riser running too hot
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James
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Recently installed CMI ETOPS on a 496Mag Ho murcruiser, 26
Recently installed CMI ETOPS on a 496Mag Ho murcruiser, 26 Baja Outlaw. They are working without issue, but noticed that while in neutral water is ejected out of the starboard exhaust only. I've been … read more
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James
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Twin inboard 454 crusader 7.4 XLs starboard engine seems to
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Captain Dave
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I work on a Supply vessel that is a keel cooled system, 8V-149
I work on a Supply vessel that is a keel cooled system, 8V-149 TIB Engines. the other day my stbd. main overheated while running in, I opened up the pet cocks on the thermo. housings, and the discharg… read more
Tan
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TODAYS TOUGHEST QUESTION 1984 SILVERTON CONVERTIBLE TWIN
TODAYS TOUGHEST QUESTION: 1984 SILVERTON CONVERTIBLE: TWIN 351W GAS. STARBOARD ENGINE HAD LOTS OF EHAUST STEAM WHEN I BOUGHT THE BOAT 18 MOS AGO. IT WAS A LITTLE WEEK ON COMPRESSIONS AND OIL CONSUMPTI… read more
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Have 1997 5.7L Raw water cooled 210 hours original engine on
Have 1997 5.7L Raw water cooled 210 hours original engine on SeaRay Sundancer 240. Last year replaced both exhaust elbows and risers. Since then Starboard exhaust side runs warm to hot. Port side is c… read more
Captain Dave
Captain Dave
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I have a 2006 Yamaha SX230 twin High Output four strokes ...
I have a 2006 Yamaha SX230 twin High Output four strokes which I purchased as a bank repro. I have no manuals and I am not sure how to flush the motors. I have a fitting that screws onto the end of a … 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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