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2016 4.3 180 hp mercruiser. Stumbles above 3000 rpm, looses
2016 4.3 180 hp mercruiser. Stumbles above 3000 rpm, looses power, different vibration felt. Sometimes rough idle after sitting on a hot start up. … read more
Yachtwork
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I have a 3126B in a boat. It runs fine under load to 2250
Greetings. I have a 3126B in a boat. It runs fine under load to 2250 RPM's then won't make anymore power. It will make 3000 RPM's at the dock. It just developed this problem and normally made 2850 RPM… read more
catmastertech
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Vocational, Technical or Trade Scho
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I have an 2008 mercury bigfoot 50hp. Every since it was
I have an 2008 mercury bigfoot 50hp. Every since it was brand new it surges about 100 to 300 rpms between 3000 and 4000 rpms. I took it in once they said it was fixed came home still the same. 1 1/2 h… read more
Jason
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I have a 1985 Stingray 190 ss. When I use the power trim my
I have a 1985 Stingray 190 ss. When I use the power trim my voltage drops to 10 volts and the engine wants to die. After I stop using the trim, the voltage jumps up to 14 to 16 volts and the engine ru… read more
Jeff G.
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Vocational, Technical or Trade Scho
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I have a 2002 Glastron 205GX boat. My problem is at 40 mph
I have a 2002 Glastron 205GX boat. My problem is at 40 mph and 4000 rpm I can only trim it up 1/4 before it begins to cavitate. Have tried a 14.5 x19 and a 14.3x21 prop.… read more
Tech Tom
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My boss has a Honda BF200 I believe about a 2002 with surging
My boss has a Honda BF200 I believe about a 2002 with surging issues. on its last trip out the starboard engine began to surge at about 2200 rpm's and continued without letting up the entire trip. The… read more
James
James
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Vocational, Technical or Trade Scho
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Have a 1994 mercury promax 200. blew on #6 had ecu checked
Have a 1994 mercury promax 200. blew on #6 had ecu checked lean btwn 3000-4000 rpm. would it be wise to rebuild with old ecu or use a new ecu?… read more
James
James
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Vocational, Technical or Trade Scho
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My 2000 Glastron has a 4.3 Liter Volvo Penta, Boat ran good
My 2000 Glastron has a 4.3 Liter Volvo Penta, Boat ran good right away this year. It all started when we took it to the lake and I put the boat in the water. Tried to start and it just went click. I t… read more
James
James
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Vocational, Technical or Trade Scho
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I have twin Y-250hps. In rough water my starboard motor has
I have twin Y-250hps. In rough water my starboard motor has major surging issues. I try to run a 3000 rpm and it will drop to 900-400 on a consistent basis. While this is happening, I also can see tha… read more
Whitecap36
Whitecap36
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i HAVE A 115HP JOHNSON AT HIGH SPEED ATabout 4000 rpm it begins
i HAVE A 115HP JOHNSON AT HIGH SPEED ATabout 4000 rpm it begins to slow downto about 3000 rpm and then speeds up back to 4000 rpm it never smoothies out. the fuel pump was replaced also all fuel hoses… read more
Tan
Tan
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Certified Marine Technician
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I have a 2003 Honda Aquatrax turbo 3 seater model number ARX1200T3.
I have a 2003 Honda Aquatrax turbo 3 seater model number ARX1200T3. The following problem started without warning. At about 3600 – 4000 rpms the FI warning light and beeper go off. The boat will chug … read more
James
James
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Vocational, Technical or Trade Scho
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Mercruiser 4.3 V-6, 1992 model. It runs fine on dry land with
Mercruiser 4.3 V-6, 1992 model. It runs fine on dry land with the muffs hooked up. Wide open power, fast response, like it used to. In the water it won't run over 3000 RPM and then acts like it is sta… read more
James
James
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Vocational, Technical or Trade Scho
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I have a 1989 4.3litre Mercruiser engine. Starts fine, idles
I have a 1989 4.3litre Mercruiser engine. Starts fine, idles a little rough and under zero load, will rev up to 5000 rpm without a hiccup. It 'barks' pretty good. BUT....as soon as I place it in gear … read more
Captain Dave
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I have a 2007 Mercury 115hp 4-stroke, never had a problem with
I have a 2007 Mercury 115hp 4-stroke, never had a problem with the engine. Engine started fine, ran aliitle ways, brought back to idle in a mantee zone, engine stopped. Restarted the idle was very rou… read more
Marc C. Albertson
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I recently had a new transome put on my boat, ( bravo 3 lower
I recently had a new transome put on my boat, ( bravo 3 lower unit with 2 props) it has a 5.0 Mangum engine. Before I would run around 3000 to 3200 rpm at about 58 mph. (Wide Open) Now it runs 4500 rp… read more
Captain Dave
Captain Dave
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Master's Degree
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I have a 33 sea ray. I have not ran it for several months.
I have a 33' sea ray. I have not ran it for several months. I took it out yesterday and I could not get it up on plane. The engines are running fine. What is the most likely cause?… read more
Captain Dave
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1986 Cajun Boat with 150 HP Evinrude OB Jerry Fox Derby
1986 Cajun Boat with 150 HP Evinrude OB Jerry Fox Derby Kansas XXX-XXX-XXXX Purchased January 2007 Ran in the drive way with Muffs and idled OK, a little rough at about 800-900 RPM Memorial Day Weeken… read more
davesoutboard
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owner
Associate Degree
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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
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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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