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I have a 6.2 mercruiser. during flush out it wasnt pumping
i have a 6.2 mercruiser. during flush out it wasnt pumping water. changed impeller of raw water pump ,old one did not look bad. on start up ,no water from outdrive , idled up and water flow normal.idl… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
23,314 satisfied customers
Gone thru entire engine. it is a mercruiser 6.2 and it runs
gone thru entire engine. it is a mercruiser 6.2 and it runs smooth as can be until it hits 1800 rpm and then sputters. and I have to back it down. fuel was first guess but doesn't seem to be the issue… read more
DAVID BALLARD
DAVID BALLARD
OWNER
Vocational, Technical or Trade School
10 satisfied customers
I have a 2007 Sea Ray 250 SLX with the 6.2 320 hp Mercruser.
Hi, I have a 2007 Sea Ray 250 SLX with the 6.2 320 hp Mercruser. Can you please tell me where to locate the fuel water separator? … read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
23,314 satisfied customers
I've got a 1999 7.4 Mercruiser MPI engine, it is running
Hi,I've got a 1999 7.4 Mercruiser MPI engine, it is running perfectly when its not in gear and the timing advance showing is 30 degrees of advance at 3000 rpm which I believe is correct. When under lo… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
23,314 satisfied customers
I am starting to research new remanufactured engines to
Hi Jason,I am starting to research new remanufactured engines to replace my current fresh water cooled Mercruiser 6.2 MX Bravo 3 320 HP (serial # OM322145). I am looking at 383 Strokers such as this o… read more
Boat Doc
Boat Doc
253 satisfied customers
I have a nagging problem that has been in place since I
I have a nagging problem that has been in place since I bought this boat in 2010. I am the third owner. The problem is, the Mercruiser I/O V8 idles roughly, stumbles, then dies when in gear after it i… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
23,314 satisfied customers
You have helped me in the past so I thought I would come
Hi Jason, you have helped me in the past so I thought I would come back and seek more advice from you. I launched my Rinker 342 on Friday and a problem that was happening at the end of last season of … read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
23,314 satisfied customers
2001 PCM 5.7 TBI. Need help diagnosing aand fixing a
2001 PCM 5.7 TBI. Need help diagnosing aand fixing a hesitation occurring only at WOT, also the spark plugs look like rich condition is present. I have an MEFI diagnostic scan software that shows a lo… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
23,314 satisfied customers
2010 Mercruiser 4.3l new engine replaced. Have it out and
2010 Mercruiser 4.3l new engine replaced. Have it out and won't go over 2000 rpm's in drive. Will go over 2000 in neutral and reverse? … read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
23,314 satisfied customers
Mercruiser 6.2 377. 45hrs. ran great last week. yesterday
mercruiser 6.2 377. 45hrs. ran great last week. yesterday started it up, idles fine. the problem is on acceleration. it revs-bogs-revs-bogs-revs-bogs in this fashion....idles fine. any guidance will b… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
23,314 satisfied customers
Hi Jason I have a 2008 150 optimax that stalls underload when
Hi Jason I have a 2008 150 optimax that stalls underload when in gear but will clear up when you run it wot then bring it back to idle again . But if you leave it about 15-20 minutes at idle it will b… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
23,314 satisfied customers
My Mercruiser 7.4 MPI starts, runs fine and sounds good. Runs
My Mercruiser 7.4 MPI starts, runs fine and sounds good. Runs all day at mid range rpm and no problem. It runs fine at WOT too but while running at WOT it will bog a little once in a while and then re… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
23,314 satisfied customers
Hi Tan Dwight Nicholas here. First of all I want to thank
Hi Tan Dwight Nicholas here. First of all I want to thank you for the great advice on my 1995 Mercury XR6. I replaced the coil and found a broken wire from the switchers to the coil on the other cylin… read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,409 satisfied customers
I have twin mercruiser engines in my 32 boat. At idle and
I have twin mercruiser engines in my 32' boat. At idle and low rpms the engines run smoothly and seem fine. As the rpms increase to 3000 and above the starboard engine lags behind and won't make 4000 … read more
Ted G.
Ted G.
Rigger, Diagnostician
Vocational, Technical or Trade Scho
2,678 satisfied customers
I have a 2006 four winns 190 with a 4.3litre mercruiser, alpha
I have a 2006 four winns 190 with a 4.3litre mercruiser, alpha one. The boat will not rev past 4100 rpm. This is actually the 2nd engine in the boat. The first engine was replaced after only 4.2 hours… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
23,314 satisfied customers
Merc 6.2 w smartcraft breaking up above 2400 rpm no load, 1400
Merc 6.2 w smartcraft breaking up above 2400 rpm no load, 1400 under load. Ran the computer, no codes. No alarms. Compression good. Swapped fuel rack and injectors, ECM, oil pressure sensor and water … read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,409 satisfied customers
I have a Mercruiser 6.2 mpi, 2002 year model. When running
I have a Mercruiser 6.2 mpi, 2002 year model. When running at slow speeds - 10 mph and under, and when in neutral, I get a fluctuation in rpm's. Like it is lacking fuel or air. But when running at hig… read more
Pappy's Sales and Service
Pappy's Sales and Service
Vocational, Technical or Trade Scho
586 satisfied customers
I have a 270 amberjack with a 6.2 L mercruiser horizon engine.
I have a 270 amberjack with a 6.2 L mercruiser horizon engine. My son ran it aground. We got it un stuck and all was fine for a while then on plane it got hot. We returned to the marina at reduced pow… read more
Captain Dave
Captain Dave
Marine Mechanic
Master's Degree
2,672 satisfied customers
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Meet the Experts:

Ted G.

Ted G.

Rigger, Diagnostician

2,678 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

23,314 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

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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