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My Kohler 5e marine generator is overheating. At some point
My Kohler 5e marine generator is overheating. At some point in the past, the previous owner had let a number of impeller blades into the heat exchanger which was causing overheating. All debris has be… read more
Ted G.
Ted G.
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Vocational, Technical or Trade Scho
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I have a Volvo 8.1 recently new (2 yr old) that is
I have a Volvo 8.1 recently new (2 yr old) that is overheating-- I replaced the sea water pump- ran water thru the top of the heat exchanger and discharge out the bottom seemingly freely, Still overhe… read more
Jason
Jason
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I have a 3116 300 HP temperature at thermostat getting up to
I have a 3116 300 HP temperature at thermostat getting up to 220 replaced thermostat and still there took it out ran the engine and it is running at 110 at thermostat. Any suggestions we are at a lost… read more
K. Kergan
K. Kergan
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Vocational, Technical or Trade Scho
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I have twin Volvo Penta 8.1 Gil-F engines in a V-drive configuration.
I have twin Volvo Penta 8.1 Gil-F engines in a V-drive configuration. My port engine runs hot when in idle. If I am running at speed or if I have at least 1500 RPM it cools fine. I have changed the im… read more
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Jason
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I have a engine overheating problem.Mercruiser 2000 model 5.7
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Jeff G.
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Volvo Penta model 2030C 27 HP sailboat engine w/saildrive. Engine
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boatmechanicma
boatmechanicma
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Hi i have a marine diesel; Volvo Penta 2030 21kw 29hp.11 years
Hi i have a marine diesel; Volvo Penta 2030 21kw 29hp.11 years old. She keeps overheating and boiling away her fresh water coolant via the overflow under the pressure cap. There was a seawater leak fr… read more
Tan
Tan
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hi i have a yanmar 3 HM 35 F. i took the boat out yesterday
hi i have a yanmar 3 HM 35 F. i took the boat out yesterday in order to run the engine, discovered the engine overheats when run ant 3,000 rpm (alarm turns on). when slowing down to 1,000 or 2,000 the… read more
Tan
Tan
MerCruiser Certified Technician
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I have had problems with coolant loss for some time, which
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Tan
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I have recently purchased a used 2004 Crownline 225BR sporting
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K. Kergan
K. Kergan
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Vocational, Technical or Trade Scho
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i have a volvo penta aq125a im having overheating problems
i have a volvo penta aq125a im having overheating problems the seawater pump is cold on both tubes the circulating pump is turning but the exahust manifold is very hot is there to check this for being… read more
Tan
Tan
MerCruiser Certified Technician
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I have a 1983 145hp Volvo inboard -outboard. Never had any
I have a 1983 145hp Volvo inboard -outboard. Never had any problems. This year I had the fresh water cap assembly changed. the threads were broken off. first run in the lake it over heated. They( the … read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,409 satisfied customers
Volva Penta 2003T. It overheated on passage. Sea Cock, Impeller,
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Tan
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I have a volvo D1-20 engine with leg. When the boat sits on
I have a volvo D1-20 engine with leg. When the boat sits on the bottom and then floats again, the engine stops. No sea water flows through the system. How can I get the engine to work again, ie sea wa… read more
Tan
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I have a volva penta diezel engine,series 2002,in a sailboat.
I have a volva penta diezel engine,series 2002,in a sailboat. Manufactured in 1986.It overheats. When I removed the thermostat to check it I noticed that the openning on the top of the engine where th… read more
Tan
Tan
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I have a 04 reinell with the 496 volvo penta closed cooling
I have a 04 reinell with the 496 volvo penta closed cooling system. I have replaced the lower unit oil, stabilized the fuel, and drained the exhaust manifolds. Do I need to worry about water in the wa… read more
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High School or GED
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Hi - I have a 1993 volvo penta 230 engine that has been running
Hi - I have a 1993 volvo penta 230 engine that has been running hot. The cooling water guage has been showing 200 to 205 F. Used an infrared thermometer and the thermo housing was in the high 190s aft… read more
Dominick
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Vocational, Technical or Trade Scho
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boat engine over heated , so replaced impeller at front of
boat engine over heated , so replaced impeller at front of engine , i launched the boat and the engine ran hot again , what could be the problem . larry… read more
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Jason Forsberg
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Vocational, Technical or Trade Scho
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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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