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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
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I have a Mercury 60 HP, 2003 serial number: 0T730544 The
I have a Mercury 60 HP, 2003 serial number: 0T730544 The warning module after the engine warms up goes off constantly I have replaced the impeller and thermostat... and the water is strong exiting the… read more
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My 2001 50 HP Mercury runs fine for about 10 min then
My 2001 50 HP Mercury runs fine for about 10 min then suddenly starts to cut out about half RPM. I think it has to do with heat because I ran it a while with the cover off and it seemed ok. Any ideas?… read more
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Mercury Optimax with my trusted mechanic for a month He is stumped. Boat worked perfectly in spring. Then kids took it out, neglected to use primer bulb and got a few hundred yards from dock and could… read more
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Mercury engine cutting out at high RPM. What can be the issue?
I have a 2003 Mercury 300X. Engine cuts out at approximately 6,100 rpm, with a solid alarm and a flashing motor icon on the smart craft gauge.… read more
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Answers from Two Experts requested: I have a 2000 Merc
I have a 2000 Merc optimax DFI 150 HP Outboard. Every time I take the boat out, within approx 20 minutes at low rpm (below 1500) the smart craft gauges signal an overheat condition. Also says check pa… read more
Jeff G.
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Hi, I have an Optimax 150 hp (long rig) 1999 / 2000 year
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I have a 250 efi mercury 1999 and having overheating issue
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I have a 175 mercury outboard on a 20ft brig 2007 it starts
I have a 175 mercury outboard on a 20ft brig 2007 it starts and runs fine then after a while an alarm starts to sound and the boat loses speed i slow down or stop alarm goes off and i can continue on … read more
James
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Hello Jeff, I have a Mercury 90 Hp 3 cylinder outboard manufactured
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2003 Yamaha 90 hp 4 stroke carbureted. Boat is for sale, engine
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2004 optimax 250 with 330 hours. Engine cuts out at load when
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I have a 2004 Mercury 115HP EFI. I received the boat from a
I have a 2004 Mercury 115HP EFI. I received the boat from a friend and it had been out of water for a few years. I checked the oil very clean and started the engine for the very first time. It gave me… read more
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Recently purchased 1992 Mercury V6 135hp...Fitted to 16ft f/glass
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I have twin 70 HP 1988 johnsons on a 20 CC. BOTH run hot,
I have twin 70 HP 1988 johnsons on a 20' CC. BOTH run hot, especially under load. impellers and T-stats replaced last year. any advice on trouble shooting?… read more
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2000, 90HP, Motor runs great for awhile at full power, then
2000, 90HP, Motor runs great for awhile at full power, then alarm comes on and motor runs slow. Let idle for awhile alarm stops and motor runs fine again.… read more
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Mercury 90 hp 4 stroke with little millage on 17 whaler takes
Mercury 90 hp 4 stroke with little millage on 17' whaler: takes an hour to run smoothly enough to plane, then fter several hours, apparently overheats and will only go in idle. Often hard to start. Tr… read more
Dominick
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Vocational, Technical or Trade Scho
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How do I drop the lower unit to check the impeller on ...
How do I drop the lower unit to check the impeller on a 2007 XR6 - 150 HP Mercury outboard. I know where the four bolts/nuts are. My question is what do I need to do before removing the lower bolts an… read more
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Meet the Experts:

Dominick

Dominick

Marine Mechanic

1,009 satisfied customers

25 Years Experience as Mechanic, 20 Yrs Boat Yard Owner/Mechanic, Factory Certified

Ted G.

Ted G.

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40 years boating, Safe boating instruct., Offshore Race promoter, Failure Analysis, Expert Witness

John White

John White

Marine Mechanic

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11 years experience working on outboards, inboards, sterndrives & pwcs

Jason

Jason

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17,310 satisfied customers

Degree in Marine Technology. Gas and diesel marine mechanic.

Tan

Tan

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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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