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I Have a 2012 115hp 4 stroke EFI. it acts like it starves
i Have a 2012 115hp 4 stroke EFI. it acts like it starves for fuel. Cruseing along at 64 hundred rpm then it slows down like its got vapor lock or starving for fuel. then down to 5200 rpm. Sometimes w… read more
Charles
Charles
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I have a 40 hp 3 cylinder 1999? Mercury that will run full
I have a 40 hp 3 cylinder 1999? Mercury that will run full throttle for about 30 seconds (about 5000 rpms) then cuts back to 3500 rpms. It will run at idle speed for a longer period. I pump the bulb a… read more
Tan
Tan
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I have a merc 200 saltwater 2005 carb. Motor runs fine until
I have a merc 200 saltwater 2005 carb. Motor runs fine until I get into rough water offshore. motor runs good at about 3800+. If I try to ease back a little it will slowly run slower and slower until … read more
Tan
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I will be running at full throttle and all of a sudden the
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Jason
Jason
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Vocational, Technical or Trade Scho
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Have a 2005 Mercury 200 Saltwater Optimax. Took it out and
Have a 2005 Mercury 200 Saltwater Optimax. Took it out and drove it about 45 minutes, ran like a dream. Stopped to fish for about 1/2 hour restarted and press down on the throttle and it wouldn't go f… read more
Jeff G.
Jeff G.
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have a 2002 25 hp low time 4 stroke--after trolling for 4-6
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Jason
Jason
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I have a mercury 4 stroke 9.9 3 yrs. old. It has been not running
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Jason
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I have a mercury marine 4 stroke 9 HP 2010. It starts immediately,
I have a mercury marine 4 stroke 9 HP 2010. It starts immediately, but after running for a few minutes, it dies. I have tried disengaging the drive and increasing the throttle, but it seems to die whe… read more
Jeremy R
Jeremy R
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I have a 1999 Mercury 40 hp four stroke. It does not rev up
I have a 1999 Mercury 40 hp four stroke. It does not rev up cleanly when the throttle is twisted full. It stalls out and dies unless I back off. When it does get up to full speed, and the throttle is … read more
Noel
Noel
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Diploma
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I have a 2004 90 hp Mercury outboard that I purchased new with
I have a 2004 90 hp Mercury outboard that I purchased new with the boat. It has operated perfectly until this year. It was cutting out at full throttle after being run for 30 minutes or more. I emptie… read more
Jeff G.
Jeff G.
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I have a boat with a 2004 Mercury 90hp 2 stroke outboard. Recently
I have a boat with a 2004 Mercury 90hp 2 stroke outboard. Recently when I turn at full throttle the engine "cuts out" intermittently as though it is not getting furl. I changed the spark plugs and emp… read more
Jason
Jason
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Vocational, Technical or Trade Scho
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97 Mercury V6 2 stroke Saltwater series OB. Starts fine,
97 Mercury V6 2 stroke Saltwater series OB. Starts fine, runs fine off plane, gets on plane fine, runs at low to med cruising speed fine; at wide open it balks and just slows down till I come back off… read more
Tan
Tan
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Hi - dont know whether anyone can offer advice. Im looking
Hi - don't know whether anyone can offer advice. I'm looking at buying a 4m inflatable with a 2005 Mariner Marathon 25hp 2 stroke. Allegedly the outboard is in mint condition. I understand that the Ma… read more
Jeff G.
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Vocational, Technical or Trade Scho
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i have a mercury 75hp outboard when i give it full throttle
i have a mercury 75hp outboard when i give it full throttle it tries to go to about 5rpm but falls back to 3rpm… read more
Jeremy R
Jeremy R
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I have a 2005 Scout with a 150 Yamaha. The engine is cutting
I have a 2005 Scout with a 150 Yamaha. The engine is cutting out after running the boat at high rpms. When we pump the ball the engine restarts and runs for awhile. After getting back up to high rpms … read more
Tan
Tan
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mercruiser 4.2 liter vm diesel twin motors in 36 foot boat
mercruiser 4.2 liter vm diesel twin motors in 36 foot boat one motor will run just fine the first time you run to full throttle if you back out and then throttle back to full that motor will cut out u… read more
Yachtwork
Yachtwork
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Technical or Trade School
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My Kohler 5E Gas Generator is located in my boat. I am having
My Kohler 5E Gas Generator is located in my boat. I am having a problem with it shutting down after approx 5 minutes of running. It is putting out plenty of water out the exhaust. It will began to spi… read more
Mechman45
Mechman45
Vocational, Technical or Trade School
152 satisfied customers
Hi there, we were out boating today and our boat woulnt go ...
Hi there, we were out boating today and our boat woulnt go full throttle. It seem like it was slipping alittle and wouldnt go full speed, even though we had the throttle all the way down. My husand me… read more
Captain Dave
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Master's Degree
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Meet the Experts:

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Dominick

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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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