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Mercruiser 5.0L alpha serial number 0M354096. Fuel pump went
mercruiser 5.0L alpha serial number 0M354096. Fuel pump went bad.Replaced with new Airtek fuel pump. (They make the Mercruiser pumps) Carb is flooding. checked fuel pressure. it is 9psi. Boat has two … read more
Jason
Jason
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Vocational, Technical or Trade School
18,955 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
18,955 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
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1988 Sea Ray, with a 4.3L out of an 98 GM. My carburetor is
1988 Sea Ray, with a 4.3L out of an 98 GM. My carburetor is acting up. It is new and has an electric Fuel pump set at 6 psi. When I have the key on the pump will will send fuel through the jets thrott… read more
Master Tech
Master Tech
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Vocational, Technical or Trade Scho
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I have a Sea Ray 1995 with Mercruiser 3.oLX engine with 2
I have a Sea Ray 1995 with Mercruiser 3.oLX engine with 2 barrel mercarb(1995) #3310-805924A-1. Engine starts right up when cold but after warmed , I need to open the throttle about 1/3 otherwise it w… read more
Tan
Tan
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Certified Marine Technician
11,406 satisfied customers
hello I had an inboard Volvo 305 engine (blown) and got
hello: I had an inboard Volvo 305 engine (blown) and got a deal on a 'new' Mercruiser 350 engine. Changed out the wiring harness etc. I installed the electric fuel pump from the Volvo rather than the … read more
Jeremy R.
Jeremy R.
5,362 satisfied customers
Mercarb drips at idle. I have a 1998 Mercruiser 350 with the
Mercarb drips at idle. I have a 1998 Mercruiser 350 with the 2bbl mercarb. Since the day I got it, it has leaked fuel at idle. The venturi drips. I had the carb rebuilt and reinstalled, same issue. I … read more
Whitecap36
Whitecap36
Marine Technician
Vocational, Technical or Trade Scho
1,556 satisfied customers
Hi, I have a mercruiser 3.0 LX, with closed (fresh) water cooling.
Hi, I have a mercruiser 3.0 LX, with closed (fresh) water cooling. The basis for the engine is a 1989 Mercuriser 140 HP, 181 CID, with2BBL mercarb, from 1989. The engine it selves is replaced with a 2… read more
Tan
Tan
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11,406 satisfied customers
Hello i have a 1996 5.7 mercruiser. i cant seem to figure out
Hello i have a 1996 5.7 mercruiser. i cant seem to figure out what the problem is hope u can help.. The boat runs really rich at all times.. but after running for a little while at full throttle it st… read more
James
James
Certified Marine Mechanic
Vocational, Technical or Trade Scho
4,094 satisfied customers
I asked this question last night and got an answer asking me
I asked this question last night and got an answer asking me more questions. When I answered that, I received technical difficulties. So I will try again. My Mercruiser 4.3L engine 2001 motors and won… read more
Whitecap36
Whitecap36
Marine Technician
Vocational, Technical or Trade Scho
1,556 satisfied customers
I have a 95 Starcraft 4.3 mercruiser. The motor runs great,
I have a 95 Starcraft 4.3 mercruiser. The motor runs great, but after I shut it off, and it sits for just a bit....it takes forever to crank back up,,,it turns over strong but seems like takes a while… read more
James
James
Certified Marine Mechanic
Vocational, Technical or Trade Scho
4,094 satisfied customers
carburator flooding and wont pickup speed new carbkit idle
carburator flooding and won't pickup speed new carbkit idle rough also mercruiser tilt won't lift this is a mercruiser(NNN) NNN-NNNNhas alpha one… read more
Master Tech
Master Tech
Service Manager/Technician
Vocational, Technical or Trade Scho
1,167 satisfied customers
I have a 4.3l Mercruiser that floods if I have the ignition
I have a 4.3l Mercruiser that floods if I have the ignition key in the on position. We rebuilt the carb and this still happens. the previous owner had a napa electric fuel pump on it (looks like a qui… read more
Joe
Joe
Owner Kingsland Auto & Marine Services
Vocational, Technical or Trade Scho
1,392 satisfied customers
I have a 5.7l carb ski mercruiser engine with 2bbl rochester
I have a 5.7l carb ski mercruiser engine with 2bbl rochester carb. At idle , the carb is flooding with fuel spilling out of the venturis down onto the butterflys. Is the fuel pressure to high ? If i c… read more
briggs archer
briggs archer
master marine mechanic
Associate Degree
374 satisfied customers
I have a 20 foot boat with a 1998 5.0 mercruiser 220 hp/2 barrel
I have a 20 foot boat with a 1998 5.0 mercruiser 220 hp/2 barrel carb. Engine starts fine when its cold (barely crank it and it fires right up). Once its warm and sits for awhile (10 mins) its harder … read more
ROCKET
ROCKET
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Vocational, Technical or Trade Scho
426 satisfied customers
I am having problems with a rebuilt carb that I put on my 165,
I am having problems with a rebuilt carb that I put on my 165, 3.7L mercruiser. It has serious hesitation and backfire on rapid excelleration. It's original tag #1389-9564 and replacement carb has not… read more
Dominick
Dominick
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Vocational, Technical or Trade Scho
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I have a mercruiser 350cid chev. with a 2bbl carb. I am an
I have a mercruiser 350cid chev. with a 2bbl carb. I am an auto mechanic and was wondering if I can replace the carb with an automotive carb instead of a merc carb.Due to price. If I have to use the m… read more
Pappy's Sales and Service
Pappy's Sales and Service
Vocational, Technical or Trade Scho
586 satisfied customers
Mercruiser engine, 4 cly chev 1988 hard to start when warm.
Mercruiser engine, 4 cly chev 1988 hard to start when warm. Have to give it full throttle. Starts great when cold. I checked auto choke and it is fully open.… read more
mastertechtim
mastertechtim
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Associate Degree
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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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