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Don't plane like it should i need to know what prop it
Don't plane like it should i need to know what prop it should have it's got 131/4x25 on 18' stratos with a 150 Johnson fast strike. I forgot to mention it's 4 bladed … read more
Noel Schembri
Noel Schembri
Marine mechanic
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1997 Sea Doo Challenger with a single 787. The boat will
1997 Sea Doo Challenger with a single 787. The boat will only rev to 5000 rpms unless you pump the throttle. The carbs have been rebuilt,and replaced twice. motor replaced, fuel lines replaced, rave v… read more
Expert
Expert
Searay 340 with twin merc 340hp Starboard Won't rev past
Searay 340 with twin merc 340hp Starboard Won't rev past 2500 rpm We rebuilt carb Stalls after ideling 10 minutes won't rev past 2500 Runs good idle-2400… read more
Tan
Tan
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Certified Marine Technician
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1983 Mercury 115 HP outboard stalls/dies after revving up to
1983 Mercury 115 HP outboard stalls/dies after revving up to about 1200 RPM - but only when trying to accelerate in forward or reverse gear. Motor usually starts OK and idles fine and will rev up to h… read more
Jeff G.
Jeff G.
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Vocational, Technical or Trade Scho
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1990 honda bf45 will start ok but stalls on throttle up
1990 honda bf45 will start and run at fast idle fine but stalls out when throttle advanced/put in gear, carbs recently rebuilt and scythed. If I mash throttle forward it will stumble but sometimes mak… read more
Charles
Charles
Certified Mercury Tech
5,752 satisfied customers
1976 mercruiser with in line 6 230 chevy 165 hp. old motor
1976 mercruiser with in line 6 230 chevy 165 hp. old motor ran fine until it cracked a block. rebuilt motor will rev up to 4000 rpm in gear, out of the water. Put it in the water and it will only rev … read more
Tan
Tan
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hi i bought a 83 bertram with sea max 351s 1999 models electronic
hi i bought a 83 bertram with sea max 351s 1999 models electronic ignition it had sat around a few years it ran but not good smoked,you could smell fumes ive spent thousands on so called mechanics all… read more
capt ron 1959
capt ron 1959
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Vocational, Technical or Trade Scho
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I have an 89 baja jet boat with a 350 chevy built by Indmar.
I have an 89 baja jet boat with a 350 chevy built by Indmar. It has a 650cfm Holly carb. It has recently started running porly only getting about 3800 rpm. It used to get about 4500 rpm. I have change… read more
orcamarine
orcamarine
Proprietor
Vocational, Technical or Trade Scho
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I have a 1994 suzuki 225 dt two stroke, it starts up fine but
I have a 1994 suzuki 225 dt two stroke, it starts up fine but when I try to drive it will only reach 2000 rpms... seems to be an engine problem as i have run it on an external tank with th same result… read more
Noel Schembri
Noel Schembri
Marine mechanic
Diploma
2,667 satisfied customers
got a omc 5.7 cobra, just had outdrive rebuilt, engine revs
got a omc 5.7 cobra, just had outdrive rebuilt, engine revs fully when out off gear, but when in gear wont rev above 1100rpm? any ideas?… read more
James
James
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Vocational, Technical or Trade Scho
4,094 satisfied customers
I have a 1992 18 four winns I/O bowrider (180 Freedom). I
I have a 1992 18' four winns I/O bowrider (180 Freedom). I was pulling my kids today on a tube and all of a sudden I lost torque at the propeller. With the throttles full forward the tach would read a… read more
James
James
Certified Marine Mechanic
Vocational, Technical or Trade Scho
4,094 satisfied customers
i have a 1971 80hp mercury 800 outboard. runs fine outside
i have a 1971 80hp mercury 800 outboard. runs fine outside of the water with the muffs on, but when i launch it, it won't run, barely will idle under power. any suggestions? i have rebuilt the carbs, … read more
K. Kergan
K. Kergan
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Vocational, Technical or Trade Scho
1,031 satisfied customers
i have a 1992 70 hp evinrude mounted on a 18 ft. pontoon boat
i have a 1992 70 hp evinrude mounted on a 18 ft. pontoon boat -- it starts fairly good and runs good for about 20 minutes -- then it starts surging from 5500 rpms down to about 3500 rpms and back up a… read more
Jeremy R.
Jeremy R.
5,362 satisfied customers
i am working on a 98 polaris sltx 1050, it idles but acts like
i am working on a 98 polaris sltx 1050, it idles but acts like it only revs to quarter throttle. carbs have been rebuilt but still runs the same. compressions is good, jet pump and impeller are fine. … read more
Captain Dave
Captain Dave
Marine Mechanic
Master's Degree
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HI, have a 1999 johnson 60hp motor. starts fine, runs fine
HI, have a 1999 johnson 60hp motor. starts fine, runs fine full throttle until i slow down, then it won't go above 2400 rpms, tilt motor up out of water, rpms jump to 4800, tilt back down into water, … read more
Jeff G.
Jeff G.
Marine Mechanic
Vocational, Technical or Trade Scho
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I have a 2003 Mercury 50HP outboard on a 22 foot pontoon boat.
I have a 2003 Mercury 50HP outboard on a 22 foot pontoon boat. Up until this year it has ran great with plenty of power. This year when going forward it will only rev up to around 3500 RPM when in pre… read more
Jason Forsberg
Jason Forsberg
Outboard Marine Mechanic
Vocational, Technical or Trade Scho
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i have an evinrude 90. the boat is new to me. the motor will
i have an evinrude 90. the boat is new to me. the motor will run fine (4500-5000 rpms) when first put in the water, but seems like when i hit a wake or rough water it'll die down to 2500 rpms at full … read more
Dr. Joe
Dr. Joe
Bachelor's Degree
198 satisfied customers
I have a 40hp mercury 2stroke 2 cylinder outboard that runs ...
I have a 40hp mercury 2stroke 2 cylinder outboard that runs fine in neutral and revs full but when its in drive and full throttle is on it just bogs down and wont get up onto plane or go full speed??… read more
Captain Dave
Captain Dave
Marine Mechanic
Master's Degree
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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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