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My Mercury Optimax 225 HP outboard was running really rough
My Mercury Optimax 225 HP outboard was running really rough and wouldn't throttle up. It ended up stalling out and now I cannot get it started. I've changed the spark plugs and filters. … read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
19,618 satisfied customers
When I put the motor in gear the motor only turns about 2000
when I put the motor in gear the motor only turns about 2000 rpms, then I can shut the motor off and let it set for a few minutes and try it again and it might take throttle like it is supposed to or … read more
Blake P
Blake P
Certified RV & Marine Technician
132 satisfied customers
Motor will run fine, I'll stop and restart and all is good.
Motor will run fine, I'll stop and restart and all is good. After about 3 start attempts, motor will stall and cannot restart. After a few hours motor will restart with same same problem stated above.… read more
Charles
Charles
Marine Mechanic
Certified Mercury Tech
5,631 satisfied customers
I was running my 2013 Mercury 150 optimax. It's on a Triton
I was running my 2013 Mercury 150 optimax. It's on a Triton bass boat . Was running around 50mph then the motor suddenly shut down. Went to crank it and it won't start. I check the bulb, had a full ta… read more
Matthew John
Matthew John
Cert II Electronic Engineering
76 satisfied customers
I have a 2013 Mercury OptiMax 2 stroke. It has new high
I have a 2013 Mercury OptiMax 2 stroke. It has new high pressure and low pressure fuel pumps, new thermostat and new spark plugs. Runs great however. After running it for about 40 min. If I turn it off and try to start it again it won't start right away. I would have to wait for about 10 minutes before it starts again. I noticed it burns out a lot of oil while trying to start. Eventually it starts and runs great again. I can replicate the problem. … read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
19,618 satisfied customers
I have a 2000 Mercury Optimax 115. Over the years, I've
I have a 2000 Mercury Optimax 115. Over the years, I've experienced the notorious over heating problems this motor is known for and many others as well. It's been so bad that no one in the family has … read more
Charles
Charles
Marine Mechanic
Certified Mercury Tech
5,631 satisfied customers
No spark, when unplug top harness on the outboard Mercury
No spark, when unplug top harness on the outboard Mercury PCM and crank motor their is a spark. What's wrong. Can the PCM be reprogrammed? Can it use other PCM modules?… read more
Charles
Charles
Marine Mechanic
Certified Mercury Tech
5,631 satisfied customers
I have a 2001 200hp mercury optimax outboard that one day
I have a 2001 200hp mercury optimax outboard that one day ran great,the next day it tried to start,but would not start,Curt… read more
Charles
Charles
Marine Mechanic
Certified Mercury Tech
5,631 satisfied customers
I have a 2011 Mercury Optimax on my bowrider. Was running great.
I have a 2011 Mercury Optimax on my bowrider. Was running great. Boat was out of the water for nearly 6 months. went back in 3 days ago and ran fine. Today topped it up with fuel and it would not acce… read more
Charles
Charles
Marine Mechanic
Certified Mercury Tech
5,631 satisfied customers
...My 2004 90hp Optimax has ran great forever it seems. At
...My 2004 90hp Optimax has ran great forever it seems. At a tournament, mid-day,without warning, it would not [rev over 2800 rpm, get on plane. it will rev up to wot when you take it out of gear. i h… read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,406 satisfied customers
I have a 09 mercury 75 HP EFI 4 stroke motor . First time out
I have a 09 mercury 75 HP EFI 4 stroke motor . First time out last year the motor wouldn't start had to have a new fuel pump.This motor has very little hours on it.Three days ago we went first time th… read more
James
James
Certified Marine Mechanic
Vocational, Technical or Trade Scho
4,094 satisfied customers
I have a mercury optimax 135 hp engine, and is greatly
I have a mercury optimax 135 hp engine, and is greatly accelerated when it starts and lasts only 10 seconds to work and then goes down to off someone know you are wrong… read more
Charles
Charles
Marine Mechanic
Certified Mercury Tech
5,631 satisfied customers
I am considering buying a 2003 Sea Doo Islandia Deck Boat.
I am considering buying a 2003 Sea Doo Islandia Deck Boat. It has a Mercury Drive and I heard it is a problem finding a mechanic to work on them. It is also a jet boat and there also is a problem find… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
19,618 satisfied customers
I have a Mercury Optimax 90 engine on my pontoon boat. Started
I have a Mercury Optimax 90 engine on my pontoon boat. Started it and ran about 20 seconds and stopped running. Fuel filter- fuel lines- fuel pump - spark plugs - electrical spark at plugs - fuses are… read more
Jeremy R.
Jeremy R.
5,362 satisfied customers
i have a 2009 mercury outboard optimax motor for our bentley
i have a 2009 mercury outboard optimax motor for our bentley pontoon boat and we cant get the engine to start… read more
James
James
Certified Marine Mechanic
Vocational, Technical or Trade Scho
4,094 satisfied customers
I have a 2000 40hp mercury remote 2 stroke outboard motor that
I have a 2000 40hp mercury remote 2 stroke outboard motor that will not idle in neutral. The carbs have been serviced 2 times in the last year. ($1800) I feel like i have been ripped off but can not p… read more
Jeff G.
Jeff G.
Marine Mechanic
Vocational, Technical or Trade Scho
4,730 satisfied customers
We have a 1975 Mercury 650 outboard motor-3 cylinder 2 carbs.
We have a 1975 Mercury 650 outboard motor-3 cylinder 2 carbs. The water pump went and cooked the motor. My dad had the motor rebuilt. Bored out and new pistons and a new water pump. It runs well on 3 … read more
Jeff G.
Jeff G.
Marine Mechanic
Vocational, Technical or Trade Scho
4,730 satisfied customers
I own a 2002 Mercury 150 Optimax motor and have been told that
I own a 2002 Mercury 150 Optimax motor and have been told that I don't have to use optimax oil in it if I first remove all of it prior to using regular mercury oil. Since we live in a rural area of th… read more
FieldServiceTech
FieldServiceTech
Vocational, Technical or Trade Scho
146 satisfied customers
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Jason

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Jeff G.

Jeff G.

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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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