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Penta 3.0 GP-C over heating. I replaced the water pump
Penta 3.0 GP-C over heating. I replaced the water pump impeller and the thermostat. Thermostat i in correct position. I have tested water flow thru exhaust manifold which is fine. Cannot get much wate… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade Scho
17,310 satisfied customers
I have a 10 hp Westerbeke diesel. It sometimes doesn't push
I have a 10 hp Westerbeke diesel. It sometimes doesn't push ocean water out the exhaust pipe at higher rpms. Does this mean the impeller could be the problem? At idle, it works okay, but when around 1… read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,264 satisfied customers
I have my boat in the shop. I have a 1989 50 HP us marine force
I have my boat in the shop. I have a 1989 50 HP us marine force motor. I've changed the impeller an . No water out the telltale. Took it to shop and he changed the head gasket and impeller pin still n… read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,264 satisfied customers
I just bought a 2002 sea ray with a 5k kohler generator it
I just bought a 2002 sea ray with a 5k kohler generator it starts right up runs 10 minutes and shut off… read more
Jason
Jason
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Vocational, Technical or Trade Scho
17,310 satisfied customers
Hi, I have a 2007 40 hp 4 stroke Yamaha F40WHT which I get
Hi, I have a 2007 40 hp 4 stroke Yamaha F40WHT which I get serviced regularly. I went for a hour and half trip on Thursday no worries. On Saturday in great weather I set of from boat ramp doing my 6 k… read more
Jeff G.
Jeff G.
Marine Mechanic
Vocational, Technical or Trade Scho
4,729 satisfied customers
Just purchased new boat with Westerbeke 8 Kw gen. Idiot friend
Just purchased new boat with Westerbeke 8 Kw gen. Idiot friend didn't realize the sea water intake had been closed. He said generator stopped running and he smelled rubber burning. He said gen kept tu… read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,264 satisfied customers
I have a crowline inboard bravo 3. I ran it in my drive way
I have a crowline inboard bravo 3. I ran it in my drive way with the ear muffs and no water came out. I shut it off and took the pump off and looked at the impeler and all the fins were there. I put i… read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,264 satisfied customers
When idling in coves etc. the engine will start to heat up.
When idling in coves etc. the engine will start to overheat. We have changed impellor and still having the same problem. Next pulled thermostat housing and found pieces of old impellor. Changed thermo… read more
orcamarine
orcamarine
Proprietor
Vocational, Technical or Trade Scho
7 satisfied customers
I have a 12.5 westerbeke marine generator on my houseboat!
I have a 12.5 westerbeke marine generator on my houseboat! It has less than a thousand hours on it and has run great. Its a 1997 model #367815. We were out this weekend and it ran for a couple of hour… read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,264 satisfied customers
I have a 2001 4.3L. It will start to over heat the faster
I have a 2001 4.3L. It will start to over heat the faster I go, but sometimes it will start to cool down going fast. I've replaced the impeller and the thermostat but it keeps running hot. I can't fig… read more
James
James
Certified Marine Mechanic
Vocational, Technical or Trade Scho
4,094 satisfied customers
i have cat 3412E engines in a boat i just purchased and i am
i have cat 3412E engines in a boat i just purchased and i am getting a flashing light on the water pressure icon on the engine monitoring system display. Pls advise what this means and what i should c… read more
James
James
Certified Marine Mechanic
Vocational, Technical or Trade Scho
4,094 satisfied customers
Hello I have a 496 mag and just started it with the muffs on
Hello I have a 496 mag and just started it with the muffs on and had it running about a min and noticed that there was no water coming through the exaust. The place that I purchased the boat from repl… read more
Ted G.
Ted G.
Rigger, Diagnostician
Vocational, Technical or Trade Scho
704 satisfied customers
I have recently purchased a used 2004 Crownline 225BR sporting
I have recently purchased a used 2004 Crownline 225BR sporting a 5.7L GXI 350 Mag Volvo Penta and Volvo Penta Duo Prop outdrive. Only to find out later that it was once a salt water vessel. Before eve… read more
K. Kergan
K. Kergan
Inboard/Outboard Mechanic
Vocational, Technical or Trade Scho
1,031 satisfied customers
I have a 1989 mastercraft tristar boat. The boat is running
I have a 1989 mastercraft tristar boat. The boat is running hot, 200-220 F. I take the thermostat out and it runs cool 130 F. I put in two different 143 F thermostats and no change. I did a water flow… read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,264 satisfied customers
Bought a used boat the other day. A 1998 Boston Whaler with
Bought a used boat the other day. A 1998 Boston Whaler with a salt water 175 Evenrude motor. The motor keeps over heating and a highpitched alarm keeps going off. I called the previous owner of the bo… read more
Jason Forsberg
Jason Forsberg
Outboard Marine Mechanic
Vocational, Technical or Trade Scho
531 satisfied customers
My 2002 Yamaha T9.9 EXHA has had the impeller&thermostat replaced,
My 2002 Yamaha T9.9 EXHA has had the impeller&thermostat replaced, but still seems to be overheating. There isn't a good stream of water when it is running. Engine will quit after it runs under load a… read more
Captain Dave
Captain Dave
Marine Mechanic
Master's Degree
2,672 satisfied customers
Hi, I have a 1988 2.3l ford tko with cobra 400 I/O. Ive had
Hi, I have a 1988 2.3l ford tko with cobra 400 I/O. I've had this boat since new. Overheating problem within minutes of cold start up, does not matter whether it is idling or powered up. Here is a lis… read more
Captain Dave
Captain Dave
Marine Mechanic
Master's Degree
2,672 satisfied customers
28 ft searay...2 350 smblks.....one starts overheating
28 ft searay...2 350 smblks.....one starts overheating slowly after 20....30 min running at 3500 rpms......where should i start to ck ? Thanks Bob… read more
Dominick
Dominick
Marine Mechanic
Vocational, Technical or Trade Scho
1,009 satisfied customers
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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

704 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

17,310 satisfied customers

Degree in Marine Technology. Gas and diesel marine mechanic.

Tan

Tan

MerCruiser Certified Technician

11,264 satisfied customers

40 yrs. experience with complete engine repairs both inboard/outboard and MerCruiser Certified Technician.

Jeff G.

Jeff G.

Marine Mechanic

4,729 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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