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Have aboat with a350 merc engine just put new bellows in bellhousing
have aboat with a350 merc engine just put new bellows in bellhousing when completed hooked garden hose up started motor a lot water came out 2 1"holes at bottom of housing some water came out prop not… read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,409 satisfied customers
, Im having ongoing issues with my mercruiser 5.7 MPI
Hello, Im having ongoing issues with my mercruiser 5.7 MPI Horizon motor overheating. I have tried many things including manifolds, elbows, raw water pump etc... It is a half closed cooling systems. I… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
22,804 satisfied customers
Hi, I am changing the u-joint bellows in my alpha one, gen
Hi, I am changing the u-joint bellows in my alpha one, gen 1 outdrive. I assume you need to remove the bell housing for this repair. Is this correct? If so, is there any way I can remove the bell hous… read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,409 satisfied customers
I have a 1990 mercruiser alpha one. Water is leaking into the
I have a 1990 mercruiser alpha one. Water is leaking into the boat at a slow pace through a hole directly above the driveshaft. It appears to me that the hole is supposed to be there but the water is … read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,409 satisfied customers
Hi, i have a cooling problem on my volvo penta deisel outdrive.
Hi, i have a cooling problem on my volvo penta deisel outdrive. The exhaust gasses and water are not exiting through the leg as they should but are coming out of 2 holes just under the transom. Engine… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
22,804 satisfied customers
what is the theory of operation of the exhaust system on my
what is the theory of operation of the exhaust system on my 5.o L mercruiser IO--Alpha One gen II. Meaning what happens to the exhaust gasses during operation--where do they travel???… read more
Jeremy R.
Jeremy R.
5,362 satisfied customers
Hi there, have a genuine mercruiser 1976 model with alpha leg. The
Hi there, have a genuine mercruiser 1976 model with alpha leg. The engine has 150 PSI compression on all cylinders. MY problem is blow back into the rocker covers pushing dip stick out. The problem on… read more
Jeremy R.
Jeremy R.
5,362 satisfied customers
Background Recently bought a 33ft, 5 ton launch with a 1997
Background Recently bought a 33ft, 5 ton launch with a 1997 Mercruiser 7.3 D-tronic V8 diesel and bravo 2 stern leg (570 hours). Had pre-purchase inspection of engine & leg done by local Mercruiser gu… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
22,804 satisfied customers
Im trying to replace the exhaust billows between the stern
I'm trying to replace the exhaust billows between the stern & outdrive. It's on an Alpha 1 / Mercruiser 470. I've tried fastining it to the stern end & lowering the out drive, I've reversed it & faste… read more
Dominick
Dominick
Marine Mechanic
Vocational, Technical or Trade Scho
1,009 satisfied customers
The flexible exhaust tube that connects the transom to the
The flexible exhaust tube that connects the transom to the outdrive has deteriorated and fallen off. What are the potential consequences of operating the boat without the exhaust tube in place?… read more
Jeff G.
Jeff G.
Marine Mechanic
Vocational, Technical or Trade Scho
4,730 satisfied customers
I HAVE A 85 MERCRUISER 5.7 WITH AN ALPHA ONE OUTDRIVE. IT
I HAVE A 85 MERCRUISER 5.7 WITH AN ALPHA ONE OUTDRIVE. IT HAS A NEW WATER PUMP IN THE OUT DRIVE, I PUT A NEW THERMOSTAT IN, AND HAVE MADE SURE THE MANIFOLDS AND RISERS ARE CLEAR BY PUSHING WATER THROG… read more
K. Kergan
K. Kergan
Inboard/Outboard Mechanic
Vocational, Technical or Trade Scho
1,031 satisfied customers
93 CROWNLINE W/ 5.7 & ALPHA 1 MERCRUISER - Im getting water
93 CROWNLINE W/ 5.7 & ALPHA 1 MERCRUISER - I'm getting water into the lower unit oil and not sure where to begin. I replaced the oil/fluid and the seals on the drain/filler plugs on the lower unit, ra… read more
K. Kergan
K. Kergan
Inboard/Outboard Mechanic
Vocational, Technical or Trade Scho
1,031 satisfied customers
boat engine 4.3 6cyl is overheating its not water pump that
boat engine 4.3 6cyl is overheating its not water pump that has been checked wateris getting to exhaust manifolds both sides if i disconnect ahose at a manifold i get exhaust no water from manifold sa… read more
Jeff G.
Jeff G.
Marine Mechanic
Vocational, Technical or Trade Scho
4,730 satisfied customers
I have just bought a boat with a 5.0 litre Cobra stern drive.
I have just bought a boat with a 5.0 litre Cobra stern drive. It appears to be quite noisy from the exhaust. I have inspected the bellows and what I can see appears OK. When I run the motor on the gar… read more
John White
John White
Marine Mechanic
Vocational, Technical or Trade Scho
306 satisfied customers
I hooked up some rabbit ears to my mercruiser i/o engine. The
I hooked up some rabbit ears to my mercruiser i/o engine. The water is going in ok, buit I'm not sure where it is supposed to come out. It seems that most of it is comming out warm/hot near the transo… read more
mercmastertech
mercmastertech
Service Manager, Master technician
Technical School
249 satisfied customers
Mercruiser Alpha One exhaust tube. What is the difference if
Mercruiser Alpha One exhaust tube. What is the difference if it is attached to the bellhousing or the transom bulkhead? My thoughts are that the seal is improved for flow down and out the prop, withou… read more
briggs archer
briggs archer
master marine mechanic
Associate Degree
403 satisfied customers
We replaced the exhaust bellows on our mercruiser motor and
We replaced the exhaust bellows on our mercruiser motor and the rpms are higher at a lower speed. Do we not do something correct?… read more
gearheadII
gearheadII
Bachelor's Degree
138 satisfied customers
I have a thin film of milky colored oil floating out from the
I have a thin film of milky colored oil floating out from the back of the boat. When I touch this milky film, my finger is covered with black sooth like substance. The boat is equipped with a 4.3L EFI… read more
Yachtwork
Yachtwork
Owner Team Yachtwork
Technical or Trade School
2,652 satisfied customers
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Meet the Experts:

Ted G.

Ted G.

Rigger, Diagnostician

3,332 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

22,804 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

Noel Schembri

Noel Schembri

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2,759 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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