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Getting hot when it gets on plane. I have replaced water
Getting hot when it gets on plane. I have replaced water pump in the lower unit and on the engine and checked all hoses and heat exchanger for blockages. I pulled the engine and checked the block and … read more
Jason
Jason
Marine Mechanic
18,818 satisfied customers
I have an older 3208 NA 210 HP caterpillar in my commercial
I have an older 3208 NA 210 HP caterpillar in my commercial work boat. This week it starting losing high rpm power and was blowing black smoke out of the port side. We had an old Kenworth a long time … read more
K. Kergan
K. Kergan
Inboard/Outboard Mechanic
Vocational, Technical or Trade Scho
1,031 satisfied customers
We have a 2670 Bayliner Explorer with a 125AQ Volvo Penta
We have a 2670 Bayliner Explorer with a 125AQ Volvo Penta coupled to a 270 outdrive. Built in 1981. Boat long distances in Prince William Sound. Last tune up was about 200 hours ago. I did not properl… read more
Jason
Jason
Marine Mechanic
18,818 satisfied customers
Jason, I have a 4JH3-DTE that is losing anti-freeze. It
Jason, I have a 4JH3-DTE that is losing anti-freeze. It is not an external leak but an internal one (nothing in bilge). I have read it can be the heat exchanger, turbo, or head gasket. Is there any wa… read more
Jason
Jason
Marine Mechanic
18,818 satisfied customers
We have a Universal Atomic Diesel Engine M-30. We are getting
We have a Universal Atomic Diesel Engine M-30. We are getting a frothy brown gunk in the coolant - it is not oily and washes off the radiator cap easily-water soluble. When we first noticed it, we flu… read more
Jason
Jason
Marine Mechanic
18,818 satisfied customers
Thank you in advance. The engine is a 1981 Mercruiser 470.
Thank you in advance. The engine is a 1981 Mercruiser 470. I ran the boat and found out the exhaust manifold and riser needed to be replaced. I replaced the exhaust manifold and Riser. The issue now i… read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,264 satisfied customers
I am looking at purchasing a 2004, 28 Albemarle Express with
I am looking at purchasing a 2004, 28' Albemarle Express with tower, the boat is powered by twin inboard Mercruiser 350 mag MPI WC engines and I'm after some information on the fuel consumption. At bo… read more
Jason
Jason
Marine Mechanic
18,818 satisfied customers
I test drove a 2009 Malibu 247 yesterday with a 8.1L 450hp.
I test drove a 2009 Malibu 247 yesterday with a 8.1L 450hp. The boat has a closed loop cooling system. While on the test drive every once in a while at idle I could smell anti freeze. Im assuming it w… read more
Jason
Jason
Marine Mechanic
18,818 satisfied customers
i have a 1995 sea ray 185 with a 4.3 mercruiser. i bought it
i have a 1995 sea ray 185 with a 4.3 mercruiser. i bought it in march of this year and have had it in the water every weekend since and never had any problem at all. unfortunately i lived in an apartm… read more
K. Kergan
K. Kergan
Inboard/Outboard Mechanic
Vocational, Technical or Trade Scho
1,031 satisfied customers
I have the 496 Merc Bravo II with 300 hrs. Last outing I got
I have the 496 Merc Bravo II with 300 hrs. Last outing I got an alarm and noticed the antifreeze level low. I added antifreeze and later noticed it was low again. I can not find any leaks in the engin… read more
Jason
Jason
Marine Mechanic
18,818 satisfied customers
I am losing coolant on a 2020 diesel engine. No obvious leaks.
I am losing coolant on a 2020 diesel engine. No obvious leaks. About a half litre every 50 hours. The boat has two engines. The one with the coolant loss seems to have steam in the exhaust during prol… read more
K. Kergan
K. Kergan
Inboard/Outboard Mechanic
Vocational, Technical or Trade Scho
1,031 satisfied customers
I have a pair of KAD 43s in my Beneteau 9.80, which was launched
I have a pair of KAD 43's in my Beneteau 9.80, which was launched in 2003. One of them has started using a lot of coolant - about a litre an hour at cruising revs. Obviously something's wrong; do you … read more
Jason
Jason
Marine Mechanic
18,818 satisfied customers
i have a 3.7 fwc engine that upon startup is losing antifreeze
i have a 3.7 fwc engine that upon startup is losing antifreeze out the exhaust. what needs to be done?… read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,264 satisfied customers
I have a 1992 Sea Ray Sundancer with a 7.4L Mercruiser (got
I have a 1992 Sea Ray Sundancer with a 7.4L Mercruiser (got it 3 years ago) with fresh water cooling (heatexchanger). Since the time I bought the boat it has always needed to have a small amount of an… read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,264 satisfied customers
I have a 2002 350 Horizon MPI (Self contained), it recently
I have a 2002 350 Horizon MPI (Self contained), it recently hydo-locked (fresh water) thought it was abad starter and then realized the motor was seized pulled the plugs and equal amounts of water in … read more
Jeremy R.
Jeremy R.
5,362 satisfied customers
I have a 2000 mercruiser 350 mpi engine with the mercury closed
I have a 2000 mercruiser 350 mpi engine with the mercury closed cooling system. The antifreeze is getting diluted and is passing somehow. the cooling tank with the antifreeze loose about one quart per… read more
Captain Dave
Captain Dave
Marine Mechanic
Master's Degree
2,672 satisfied customers
I have just had a new SX-A outdrive installed on my boat, which
I have just had a new SX-A outdrive installed on my boat, which already had a Volvo 5.7L engine. Is it sufficient to winterize it by attaching a winterizing kit to the lower unit and running 3-4 gallo… read more
John White
John White
Marine Mechanic
Vocational, Technical or Trade Scho
306 satisfied customers
my 2001 rinker 270 was recently dewinterized. After taking
my 2001 rinker 270 was recently dewinterized. After taking it out for the first time it ran terrible. Engine cutting out and missing. It ran fine before we winterized it last year. Now the place that … read more
mercmastertech
mercmastertech
Service Manager, Master technician
Technical School
249 satisfied customers
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Meet the Experts:

Dominick

Dominick

Marine Mechanic

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Jason

Jason

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Tan

Tan

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Jeff G.

Jeff G.

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Captain Dave

Captain Dave

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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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