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We are looking for a replacement motor for our boat but we
we are looking for a replacement motor for our boat but we are discovering there is alot of different 4.3L engines we have the mercruiser GM 4.3L serial # 0D812120 was block cast number of a T01092KP … read more
Noel Schembri
Noel Schembri
Marine mechanic
Diploma
2,244 satisfied customers
Just fired a new motor 4.3l mercruiser and getting water in
Just fired a new motor 4.3l mercruiser and getting water in the oil . the original engine did the same thing . the original engine was not winterized .correctly and cracked the block . Put this engine… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
21,611 satisfied customers
Fuel injectors on carb not working on mercruiser 4.3L, On
Fuel injectors on carb not working on mercruiser 4.3L … read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
21,611 satisfied customers
1987 sea ray seville, 4.3 mercruiser. was tearing motor down
1987 sea ray seville, 4.3 mercruiser. was tearing motor down because nof cracked block and found camshaft to have no retaining ring on it. what holds the cam in place then… read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,409 satisfied customers
I hav a 1988 5.0 Omc (GM) engine, block is cracked, 1 pc rear
I hav a 1988 5.0 Omc (GM) engine, block is cracked, 1 pc rear main seal. Found a 1983 omc 5.0 block with 2 pc rear main, will the blocks interchange. Plan to use all my components on the 83 block… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
21,611 satisfied customers
GM Mercruiser: Cam, it's Pete. Did you find out any info
Hi Cam, it's Pete. Did you find out any info on my boat engine problem? I found a 1994 GM 4.3L for sale but as for our last internet conversation I am not sure if my exhaust manifolds will bolt up.… read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,409 satisfied customers
I have a 4.3L mercruiser in a 1992 Bayliner. It runs very
I have a 4.3L mercruiser in a 1992 Bayliner. It runs very rough with black smoke on startup. Runs fine when warm. Spark plugs have black sooty deposits on them, not oiled. It has new everything but th… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
21,611 satisfied customers
Jason this is Don. Can you respond to my previous question
Jason this is Don. Can you respond to my previous question? I posted a question and my credit card wasn't activated. I'm replacing a Mercruiser 4.3L 2bbl that had cracked heads, exhaust manifolds and … read more
Charles
Charles
Certified Mercury Tech
5,638 satisfied customers
I am thinking of buying a 1995 Rinker Vee 280 cabin cruiser
I am thinking of buying a 1995 Rinker Vee 280 cabin cruiser fixer upper. Anything you can tell me about about these boats? What should I be looking for? It has twin mercruiser 4.3L. Was used in fresh … read more
Noel Schembri
Noel Schembri
Marine mechanic
Diploma
2,244 satisfied customers
I need to replace my heads as one is cracked. Should I buy
I need to replace my heads as one is cracked. Should I buy new aluminum heads or rebuilt cast iron heads. My engine is a 1992 Mercruiser 5.7L (350 chevy) with a cast iron block. The serial number on t… read more
orcamarine
orcamarine
Proprietor
Vocational, Technical or Trade Scho
7 satisfied customers
My 1988 4cyl 3.0 mercruiser sat for a year wasnt winterized
My 1988 4cyl 3.0 mercruiser sat for a year wasnt winterized changed oil plugs fresh gas it started right up it idles great but when i give it gas (nuetral or in gear )it dies also found a little water… read more
James
James
Certified Marine Mechanic
Vocational, Technical or Trade Scho
4,094 satisfied customers
i have a 1997 3.0l with a cracked block can i change to a 1992
i have a 1997 3.0l with a cracked block can i change to a 1992 4.3l and how much would it take… read more
James
James
Certified Marine Mechanic
Vocational, Technical or Trade Scho
4,094 satisfied customers
I currently have a volvo penta 4.3L GL-D in my 2005 chaparral
I currently have a volvo penta 4.3L GL-D in my 2005 chaparral 210 ssi. My motor injested water after one of my risers failed and the engine is locked up. I have the ability to get a Mercruiser 4.3L at… read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,409 satisfied customers
I have a 92 Crownline boat with a MerCruiser 4.3 LX / V6 Alpha
I have a '92 Crownline boat with a MerCruiser 4.3 LX / V6 Alpha One engine with Thunderbolt IV Ignition - it is destroyed due to cracked Manifolds. I have found a rebuilt ready to drop in 4.3 litre (n… read more
Jeremy R.
Jeremy R.
5,362 satisfied customers
whats the timing supposed to be set at on a thunderbolt IV
what's the timing supposed to be set at on a thunderbolt IV ignition? 4.3L mercruiser 1992… read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,409 satisfied customers
I have a 1988 Thundercraft Temptation 265 thats powered by
I have a 1988 Thundercraft Temptation 265 that's powered by 2 x 205 V6 engines W/Alpha1 drives. I'd like to re-power the boat and was wondering what would be recommended. My options, (I think), are #1… read more
Master Tech
Master Tech
Service Manager/Technician
Vocational, Technical or Trade Scho
1,167 satisfied customers
i spoke with you last week have 1988 merc I.O 130hp cracked
i spoke with you last week have 1988 merc I.O 130hp cracked block i found a 1983 mecr 140 hp 4 cyl will that match up with my outdrive and will i be able to use parts off my old motor interchange with… read more
Dominick
Dominick
Marine Mechanic
Vocational, Technical or Trade Scho
1,009 satisfied customers
I have a bad block(frozen)in 1985 Boat that I bought would ...
I have a bad block(frozen)in 1985 Boat that I bought would like to find a newer 4.3 with as close a bolt pat. as can. I have GM 3.8LG 229 (J838796) To5104JA (D 12 4)(471594) With 12 Bolt Intake manifo… read more
Pappy's Sales and Service
Pappy's Sales and Service
Vocational, Technical or Trade Scho
586 satisfied customers
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Meet the Experts:

Ted G.

Ted G.

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Jason

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Tan

Tan

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Jeff G.

Jeff G.

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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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