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Merc 90 2 stroke died at fast throttle Very little oil in
Merc 90 2 stroke died at fast throttle Very little oil in reserve, both fuel tanks and bulbs would not prime hard and wouldnt start after ....filter or fuel pump? … read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
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60 HP Mercury outboard on pontoon. Under lower speeds
60 HP Mercury outboard on pontoon. Under lower speeds (1500-1800 rpm) the motor runs fine for about 20 minutes, then "stumbles" like it isn't getting fuel. Pumping the primer bulb does not help. Event… read more
CalebA820
CalebA820
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Engine shuts down, squeeze primer and it will run for a
Engine shuts down , squeeze primer and it will run for a minute or two 2016 60 merc with 25 hrs starts right up & stalls in a few minutes … read more
Jason
Jason
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Vocational, Technical or Trade School
22,043 satisfied customers
My 2009 merc 150 optimax stroke appears to lose prime at low
My 2009 merc 150 optimax stroke appears to lose prime at low speed (trolling at lowest throttle setting). After pumping bulb back up, will start and run again before repeating. At WOT having started w… read more
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Jason
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2011 Mercury 60hp 4 stroke EFI.... Pump up the bulb before
Second opinion] 2011 Mercury 60hp 4 stroke EFI.... Pump up the bulb before starting, it will crank and idle fine. Plane it off and get up to speed and after alittle while it will start sputtering and … read more
Ted G.
Ted G.
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Vocational, Technical or Trade Scho
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Have 96 Basscat with 200HP Merc EFI 2 Stroke where the oil
Have 96 Basscat with 200HP Merc EFI 2 Stroke where the oil pump was taken out to mix Quicksilver Premium Plus precisely straight into ethanol free gas using 50:1 ratio. Got a rebuild with new Boyesen … read more
Charles
Charles
Certified Mercury Tech
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I have a two stroke 115 hp outboard that was running fine.
I have a two stroke 115 hp outboard that was running fine. The primer bulb was cracked during our last outing so I bought a new one and installed it. I added some fuel and primed the engine and it sta… read more
Tan
Tan
MerCruiser Certified Technician
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I have a yahama hpdi 200 outboard 4 stroke. recently had to
I have a yahama hpdi 200 outboard 4 stroke. recently had to replace fuel tank due to leak. boat sat for 3 seasons. now will run for couple minutes- try to come up on plane and shuts offs. will crank b… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
22,043 satisfied customers
I have a 06 90hp 4 stroke efi. It act like it is running out
I have a 06 90hp 4 stroke efi. It act like it is running out of fuel after running for a while at various speeds. The fuel system seems to lose its prime. I can squeeze the primer bulb and it will smo… read more
Jason
Jason
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Vocational, Technical or Trade School
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40hp Merc - been sitting a while (2 years?). New gas, newplugs.
40hp Merc - been sitting a while (2 years?). New gas, newplugs. Starts up, revs high and dies out. Will do this repeatedly. What can be done to get it to run smoothly and continuously?… read more
orcamarine
orcamarine
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my 115 four stroke ran fine half a day then stalled out like
my 115 four stroke ran fine half a day then stalled out like not getting fuel, then would not restart;squeezed fuel line bulb and it was empty; kept working bulb got it started but limped in; at rest … read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
22,043 satisfied customers
i have a 2002 115 hp 4 stroke merc ot506741. It starts fine,
i have a 2002 115 hp 4 stroke merc ot506741. It starts fine, but when I phift in geafr and start to throttle up it wants to stall. When hit higher RPM itseems to run great, but the low RpM it seems to… read more
Charles
Charles
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I have a 2 stroke Mercury Elpto 60HP on a year 2005 tracker
I have a 2 stroke Mercury Elpto 60HP on a year 2005 tracker boat serial number 1B017458. It will not cold start (follow choke, prime and start process). It will start only if following the manual's "f… read more
Jeff G.
Jeff G.
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Vocational, Technical or Trade Scho
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my 2003 90hp 4 stroke needs half throttle to start, and when
my 2003 90hp 4 stroke needs half throttle to start, and when i try to shift into gear it dies out. if i do get it to run ,it will run slow then speed up and slow again without touching the thottle i c… read more
James
James
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Vocational, Technical or Trade Scho
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i have a merc 2005 9.9 4 stroke, it starts ok and runs fine
i have a merc 2005 9.9 4 stroke, it starts ok and runs fine at slow speeds. when i throttle up to high speed it bogs down. the gas is only a week old and it is 92 octane. is there something i can get … read more
Jeremy R.
Jeremy R.
5,362 satisfied customers
I have 75hp honda 4 stroke out board boat motor and the fuel
I have 75hp honda 4 stroke out board boat motor and the fuel bulb looses its prime as it runs i have to keep squeezing it often any ideas?… read more
Jeff G.
Jeff G.
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Vocational, Technical or Trade Scho
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Hello, I have a 1985 75hp Mercury outboard. The motor starts
Hello, I have a 1985 75hp Mercury outboard. The motor starts and runs great in neutral warm up. Whern I put in gear it runs until the primer ball gets soft and then stalls. I can pump the ball or push… read more
Captain Dave
Captain Dave
Marine Mechanic
Master's Degree
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2001- 60hp Merc 2 stroke ,bulb loses prime, new bulb &lines.I
2001- 60hp Merc 2 stroke ,bulb loses prime, new bulb &lines.I can't find any leaks,please help.… read more
davesoutboard
davesoutboard
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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

22,043 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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