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I have a 2004 volvo penta 30. GL. It started overheating
I have a 2004 volvo penta 30. GL. It started overheating this year at high RPM. Replaced impeller as it was shredded. I thought I got all the fins but still overheating. It seams the riser is heating … read more
Jason
Jason
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Mid 80s mercruiser inboard 305 4 barrel. Raw water cooled,
Mid 80s mercruiser inboard 305 4 barrel. Raw water cooled, only fresh water for life of boat. Replaced manifolds Ans risers last year no problem. Replaced impeller sender and have tried with 2 known g… read more
DavidJ25
DavidJ25
Marine Mechanic Supervisor
Vocational, Technical or Trade School
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I have a 2001 Volvo Penta 8.1 GXI. This unit steaming out
Hello I have a 2001 Volvo Penta 8.1 GXI. This unit steaming out the exhaust the starboard engine no steam from exhaust it is a closed cooling system manifolds and risers are both see water cooled… read more
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My Kohler 5e marine generator is overheating. At some point
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Ted G.
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I have a 1998 Volvo penta Sx which overheats on plane. When
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Riser/exhaust pipe connector is melted from exhaust pipe
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Jason
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i have twin Mercruiser 305 ci (MIE228) in a 1978 Bertram 28
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Tan
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Hi, Can´t figure out what the correct cooling temperature
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Michael
Michael
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i have a volvo penta 3.0 gs marine engine that is building
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I have a 2000 Volvo Penta 5.7GSi that I just changed the manifolds
I have a 2000 Volvo Penta 5.7GSi that I just changed the manifolds and risers in. I also installed new plugs, changed the oil, new impeller and replaced the hoses running from the manifolds running to… read more
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I have a 2007 volvo penta 8.1 Gi-H with 20 hrs and am experiencing
I have a 2007 volvo penta 8.1 Gi-H with 20 hrs and am experiencing increased engine temps when the boat is running between 2000 and 2500 rpm. the temp runs normal at 3000rpm but when in rough seas we … read more
Tan
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I have restored a 1974 Chris Craft XK-19 boat. Fresh water
I have restored a 1974 Chris Craft XK-19 boat. Fresh water use only - no salt water use. It now has a 2007 Chevy 350 replacement crate motor. It uses the log style, wet marine manifolds with "hump ris… read more
Whitecap36
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I have twin volvo penta 5.7 GXil-F gas engines, today the port
I have twin volvo penta 5.7 GXil-F gas engines, today the port side engine ran at a much lower RPM than the starboard engine, almost 800 to 900 RPMs lower. After about 30 minutes the port side engine … read more
Jeremy R.
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I have a 2007 Monterey 290C w/ Volvo 5 liter gas engines and
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mercmastertech
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I have a 5.0l Mercruiser. A few minutes after starting the
I have a 5.0l Mercruiser. A few minutes after starting the engine, the water from the thermostat housing to the engine water circulating pump, and the starboard manifold becomes very hot, the water to… read more
capt ron 1959
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1999 5.7GS Volvo Penta Runs hot. Both risers same temp. Have
1999 5.7GS Volvo Penta Runs hot. Both risers same temp. Have changed impeller, thermostat, rubber boots. Removed all broken pieces. Exhaust water comes out secondary ports but not the prop. If I remov… read more
gearheadII
gearheadII
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I have a 1988 searay with 2 454 340 hp fresh water cooled engines.
I have a 1988 searay with 2 454 340 hp fresh water cooled engines. when I bought it back in 1998 the starboard engine ran 10 degrees hotter then the port engine I replaced the raw water impeller clean… read more
Jeremy R.
Jeremy R.
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1984 235 HP 5.0 over heats, stbd side flows better than port,
1984 235 HP 5.0 over heats, stbd side flows better than port, risers and manifold are clear what gives?… read more
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Meet the Experts:

Ted G.

Ted G.

Marine Mechanic

4,145 satisfied customers

40 years experience, Safe boating instruct., 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

25,240 satisfied customers

Degree in Marine Technology. Gas and diesel marine mechanic.

Tan

Tan

MerCruiser Certified Technician

11,507 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

3,046 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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