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2 year old 90 4 stroke runs rough at 2300 rpm then beeps and
2 year old 90 4 stroke runs rough at 2300 rpm then beeps and revs up. Put new fuel filter treated the gas, check wires after it revs up and I go back to idle then it will run ok for a little while I c… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
22,043 satisfied customers
60 hp 4 stroke running very rough at 6K - 7K RPM but fine
60 hp 4 stroke running very rough at 6K - 7K RPM but fine below that … read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
22,043 satisfied customers
I have a 2018 Mercury 150hp 4 stroke that has less than 15
I have a 2018 Mercury 150hp 4 stroke that has less than 15 hours on it. The other day after having it on water for 5 hours it starting shaking tremendously. To the point that I thought it was going to… read more
Charles
Charles
Marine Mechanic
Certified Mercury Tech
5,754 satisfied customers
I have a 2005 90 HP four cycle mercury outboard. Starting
HI. I have a 2005 90 HP four cycle mercury outboard. Starting this spring the warning alarm would come on once in a while. It seemed more likely at full speed. I took it to shop and they check it out … read more
Charles
Charles
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Certified Mercury Tech
5,754 satisfied customers
2016 pontoon with a fuel injected 150 Mercury 4 stroke. Ran
2016 pontoon with a fuel injected 150 Mercury 4 stroke. Ran fine earlier today. This evening it won't accelerate above about 2800 rpm. It was almost out of fuel so I filled it with 93 octane. No impro… read more
Charles
Charles
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My 2015 Verado 200 has apparently jumped into guardian mode.
Jeff, my 2015 Verado 200 has apparently jumped into guardian mode. Runs fine but won't climb over 3000 rpm. Problem began when I left key on and battery went dead. Jumped the kicker and charged big mo… read more
Charles
Charles
Marine Mechanic
Certified Mercury Tech
5,754 satisfied customers
I have a 2007 Mercury Verado 150 hp 4 stroke that is hard to
I have a 2007 Mercury Verado 150 hp 4 stroke that is hard to start. It takes several cranks before it fires up and it missing a low speeds. The motor also starts to stall out after I back the motor do… read more
Charles
Charles
Marine Mechanic
Certified Mercury Tech
5,754 satisfied customers
I have a 2003 50 HP Mercury Bigfoot motor on a 20 foot
I have a 2003 50 HP Mercury Bigfoot motor on a 20 foot pontoon boat. In neutral it will rev up to 6,200 RPM and set off the alarm. It idles smoothly at 800 RPM. On the lake under load (2 people) the m… read more
Charles
Charles
Marine Mechanic
Certified Mercury Tech
5,754 satisfied customers
I have a 2007 4 stroke 90 hp Mercury outboard. It beeps 3-4
I have a 2007 4 stroke 90 hp Mercury outboard. It beeps 3-4 time and eventually stalled out. I replaced the impeller and housing and the sending unit and thermostat. The engine is not overheating . I … read more
Charles
Charles
Marine Mechanic
Certified Mercury Tech
5,754 satisfied customers
I have a 2003 Mercury 115 4 stroke. When you get planed and running down the river the po
I have a 2003 Mercury 115 4 stroke. When you get planed and running down the river the power drops off, if you pull back the throttle just a hair and open it back up it will take off than drops off ag… read more
Charles
Charles
Marine Mechanic
Certified Mercury Tech
5,754 satisfied customers
I have a 2009 90 hp 4 stroke it starts and reuns good at idle
I have a 2009 90 hp 4 stroke it starts and reuns good at idle up to 2500 rpms but once you get to 3000 rpms it just starts misfiring. This happened under a load but now it happens out of the water als… read more
Jeff G.
Jeff G.
Marine Mechanic
Vocational, Technical or Trade Scho
4,730 satisfied customers
my 2005 mercury 75 hp 4 stroke run s and revs like a swiss
my 2005 mercury 75 hp 4 stroke run s and revs like a swiss clock in neutral but bogs in gear. will accelerate to 4900 rpm but at that number will bog and fall off - only way to keep it from dying is t… read more
Charles
Charles
Marine Mechanic
Certified Mercury Tech
5,754 satisfied customers
I HAVE A MERCURY 9.9 MLA4ST 1996 SN 0H005430 WITH A PROPELLER
I HAVE A MERCURY 9.9 MLA4ST 1996 SN 0H005430 WITH A PROPELLER 48-828-156-0 ON A LUND WC14 BOAT. THE PROBLEM IS THAT IT WILL NOT BRING THE BOAT TO PLANE WITH EVEN 1 200LB PERSON. I HAVE HAD OTHER 14FT … read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
22,043 satisfied customers
Hi, I have three questions. 1. I have a 60 hp mercury
Hi, I have three questions. 1. I have a 60 hp mercury 4 stroke EFI year 2003, at high speed, RPM goes beyond 7000 rpm, also what is the proper idling rpm for this motor. What could the problem for rpm… read more
Jeremy R.
Jeremy R.
5,362 satisfied customers
I have a 1998 225 EFI 2 stroke outboared..I cannot get 4500
I have a 1998 225 EFI 2 stroke outboared..I cannot get 4500 rpm and when I trim the motor up, it will go to 4900 rpm, thats it..When I first go full throttle it goes to 3000 rpm..After a little bit it… read more
Mechman45
Mechman45
Vocational, Technical or Trade School
152 satisfied customers
Hi, I have a 2004 Mercury 115hp 4-stroke EFI outboard, when
Hi, I have a 2004 Mercury 115hp 4-stroke EFI outboard, when i rev the engine on neutral sounds fine and will rev up till rev limiter, but in gear or under load, it will start bogging past 3500 rpm and… read more
TOM
TOM
Vocational, Technical or Trade Scho
196 satisfied customers
I have a Mercury 2007 75 HP 4 stroke EFI. I understand the
I have a Mercury 2007 75 HP 4 stroke EFI. I understand the bore and stroke is the same for the 90 and 115 HP. Is it possible to increase my HP rating.… read more
Larry B.
Larry B.
Marine Service Tech
High School or GED
574 satisfied customers
power issue with 2002 mercury outboard 90 hp 4 stroke.
power issue with 2002 mercury outboard 90 hp 4 stroke. history: boat used to run @ 40 mph @ 4000 rpm. now it cuts back after @ 7 mins. at anything over 3000 rpm. if taken to nuetral, the same will re … read more
BC Boat Guy
BC Boat Guy
Lecturer/Instructor
Vocational, Technical or Trade Scho
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