Boat running fine out of water, but slow in water
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- เผยแพร่เมื่อ 26 ส.ค. 2024
- I was having issues with my boat running while it was in the water, but when I pulled it out, it would run fine. Turns out to be a clogged exaughst. I couldn't find anything online to help me diagnose the problem, so hopefully this helps you.
This man deserves credit for this ive found no other videos helpful im hoping this works im going to try it rn😂
Wow, mine is doing the exact same thing and I’m at my wits end with it. Tomorrow, I’m pulling the leg off and having a look! My guess is hours of trolling and low speed running causes this problem. Thanks for making this video!
I’ve had the exact same problem and gone through all the same fixes with the same result...no power on the water. I can’t wait to drop the leg and try this. I’m hoping it solves the problem. I have searched the internet looking for a video with some new ideas. Great job. 👍
Has that solved your problem?
Greg Dwiar Unfortunately that was not my motor’s issue. Mine has a blown drive shaft seal under the flywheel that I think is sucking in air and diluting the fuel mixture. That is my next project to see if that solves the issue.
@@mplemke That does not sound good, best of luck with it.
I have the same motor doing the same thing. If the new tank and lines dont fix it I am trying your suggestion. Glad I stumbled upon this
Mine does the same thing I'm going crazy.
Had the same problem with Yamaha 90. I have cleaned water separator and got better running but didn't go more than 4000 RPM. Then sent to the shop and they rebult Injectors after that it's running perfect
I watched your video and realized my xr6 just bought had same problem. Ran a can of mercury powertune, fixed my problem, runs great now with all new ignition.
Merc master mech could not figure it out
Mine does the same shit
Holy Smokes, I think you just saved me. I can tilt it up out of the water and it runs like a champ, but putting it into the lake makes it stall out. I was starting to think I had a boat that was allergic to water. I’ll be checking for this tonight or tomorrow.
Did u check it out ?
@@Mr_PK0 Yeah, I was unable to get mine taken apart enough to check the exhaust and attempt to clean it out. But I ran a can of seafoam through it, and then another can into the next full tank of fuel, and it's running like a champ. Some people caution against seafoam. I'm familiar with it from old snomobiles, chainsaws, etc, and other old 2 strokes. My boat is a 90hp Evinrude 2 stroke. Not sure what year, but early '80s I think. Seems to have worked like a charm.
whiteshadow204 thank you , I got a 87 Suzuki dt175 , it doesn’t want to start when is trim all the way down in the lake , half way up it l will start and when going into low gear it goes and hi gear it will go up to 5k rev and doesn’t go as fast .
whiteshadow204 I have a 55 evinrude and out of water on muffs revs fine and put in water boat will not plane off but put in neutral, grab throttle under calon and hit it and revs up, screams put back in gear and go like it just gets to a point and stays
whiteshadow204 bout to have to Yale to mechanic just got motor from a guy and seems great what do you think?
Worth a try. I've checked/changed almost everything on the fuel side. Runs fine on the muffs, but dies under load in the water.
Did you ever find the solution?
did you ever find the problem? i have that problem right now 2-26-21
@@tracybeasley440did You ever find out the problem
i had the exact same problem last week, but the exhaust wasnt clogged. We cleant the cabs but it didnt work. The problem we had was that the lowest carb wasnt connected to the upper carb so just 2 cylinders were working and the other 2 were just running stable.
Same problem, same frustrations. Checking mine when I get home, I also have never thought to check this!
Thankyou very much for that insight... I would have never thought to inspect the exhaust tube for carbon obstruction. tytytytyty!!!
MAn! Thank you , I’m having the same problem. I did the carbs and everything like you. Gonna check it out this weekend.
Let me know if it works. I have the same motor this guy's has and same problems. I was about to seafoam shock it
PIPELAYER 818 ok bro, gonna do it Saturday if weather permits.
Sorry bro, I’m doing it next week. We had a hurricane this weekend
@@seymourbutts4463 did it work?
thankx man! im having almost the same "issue" motor seems to run fine on hose/muffs but put it in the water and idles good, low speed so-so but my 20HP merc will NOT get my 14ft boat above 10mph! sometimes it will kick up to 20 or even 22mph but quickly drop me back to 8mph and not go above 8mph on the lake. i cleaned carb and seemed to run better
but back on the lake only 7-8 mph.
Not fuel filter! checked for holes in fuel lines as it seems not getting enough fuel!
took fuel pump diaphragm out and shined flashlight no rips or tears!
I'll give this a go before spending $$$ on new fuel pump or sending it to "the boat doctor"
Let me know if it helps!
What did you do? I got a 50HP 4cyl Mariner. It runs OK on idle, but when I give full throttle the motor give me walking speed. It sounds OK, but like 1000rpm maybe..
I have cleaned the carburetors, no luck. Plugs are fine, fuel is fine.
Its like the motor refuse to go higher on RPM :(
Update us bro
@@liteglow2000 Looking for update
Thanks bro I just had a hell of time for my first time on the water this year
I know this is an older video, however, I’ve been trying to figure out this exact issue. On the trailer with the headphones hooked up to it, the boat revs fast and sounds like a race car lol but as soon as you put it in the water it feels weak. I’ll have to check this out and see if that’s the issue. I know the motor was rebuilt about two years back, but that doesn’t meant that they touched the exhaust side of the motor and I don’t see anything on the paperwork about it either.
Great video!
Any luck? I’m having the same issue with my 89’ 80hp mercury 2 stroke.
@@PCFiddleI'm having the problem!!!!
@@kokalol mine was a weight balancing issue. Put more weight in the front of the boat and now it flies down the water.
20 horse doing same thing. Just pulled it apart and it was packed full of a mouse nest. Thanks so much
Where is the exhaust manifold hes talking about?
My boat had the same problem, it was a bad coil. It wasn't running on all cylinders. It would start an run perfect at the dock. But wouldn't pass 5mph.
Thank you, i will try that, i have same issue, bogging down on new engine, started happening after i went out to ocean, i flushed it in fresh bucket of water but i never removed propeller, so im thinking maybe some deposits got in there
i have just about the same motor, gonna check the exhaust out tomorrow thanks for the vid👍
Was that your problem. I have the same motor same issue
will try hope it works! outboard runs fin out of water hooked to a hose, but in water under load it just shuts down when throttle is engaged! thanks for the tip, will let ya know in the comments if your way works...
Mine does this what was ur fix?
Did it work and if it did let me know what it is because mine is doing the same thing
@@scottyboy7804 lol he commented on that 2 years ago he isn't going to respond to you now
Mine is doing same thing. I tried everything but this.. after work will be trying this. Hope it fixes it
Very very helpful!!! Mine is doing the same thing and this makes perfect sense
My 70hp evinrude is doing this Il have a look an see if I got the same issue runs great troll all day long lots of rpm sitting in the driveway put it in the water sometimes shel go wide open at first for thousand feet or so but when it dies down I’m stuck trolling all day I bought it on a gamble was left in someone’s garage by a tenant it’s rebuilt too just has a very similar problem guy who put it on my boat when I mentioned this he said sounds like a CD I issue but Il try this out 👍🖐 cause it’s the other tip I’ve found thx buddy
I have same issue on my evinrude can you tell me if this fixed yur problem??
I’m realizing I messed up buying this evinrude! All these comments are same mine is doing! Just bought a 55 evinrude
Victoria Howard same thing I just bought a 55 evinrude
Hey bro my boat is doing the same thing that your motor is doing thanks for showing what to look for now i am going to try it out tomarrow and see if it works out for me bro
I have the exact same thing with my Johnson 70hp and I was just thinking the same thing about the exhaust. I'm gonna try that next Thanks so much for confirming what i thought. I too have replaced everything I thought would be the problem and like you it did not help. Now i will try this too.
Emperial Studios let me know how it works because I have the same motor with the same issue
Same here. Let us know. I'm about to trash this sob. 2000 model. Free if anyone wants it 😂
Arthur Rogers ill take it 😂
Same exact problem here, my mercury 90HP 2S runs great out of the water, changes plugs and wires, cleaned carb, checked compression and fuel lines. Runs for about 10 mins in the water but at full throttle it only gets half of normal RPMs and Boggs down . I’m gonna try this on the weekend, hope it works. Unlike other posts, I’ll let you know if it works 😉
John Lopez did it work?
I hade the same problem on my boat about two years ago could never fix the problem sold it now I find out how to fix it wow lol
Did you remove the bottom part of the engine? Am I having the same problem you had on your boat? Could you show where you uncovered it, which is not clear in the video.
Thank you! I'm going to check that now.
90hp Was running fine I took of carbs cleaned them install them back... now at high soeed I have no power max speed is 10 mph ! What could it be ? I turned the mixture screw on all 3 carbs at 1& 1/4 turn
I have a friend at work who has the exact same motor as mine on his pontoon boat and it suddenly started this as well last year. He has done a lot of work on his as well and can't find a solution either. How Strange
Like the spark arrestor on a weed eater won't run if it's clogged
I have a 40hp MERC. Same year range. Runs great on muffs but will not even start when in the water or if I put it in a bucket. Fingers crossed this is my problem. I'll find out this spring!!
Did you figure it out? That sounds like a reed valve problem.
Yes please let us know if it worked mines doing the same thing
Weedeaters, chainsaws,, ORV's ,,anything that runs mix gas,,at whatever ratio, however it''s mixed with fuel,,by pump or by hand. If your burning ANY oil in your fuel from whatever area of the motor,,this can happen and does. Polish/clean that 2 stroke exhaust flow,,you'll be doing yourself a benefit,,,with benefits especially with outboards and water submersion exhaust. Old commercials from the 50's, 60's, 70's,,so on, showing clogged up ports,,if you don't run their brand oil or ?? exclusively. That is true with those,,the rest is bullshit as far as better mileage. Better mileage is directly dependent on how you drive. Thanks for the vid,,back in 2015,,lol.
Thanks I have the same problem
Ignition coils are bad or timing is off. I had the same issue. ive been told 9/10 its ignition coils when its running fine with no resistance.
I got a 60 HP Johnson doing the same damn thing about ready to junk it went got a 50 HP Evenrude today 10/29/20 to put on my boat it it works on the 60 I will put it on my house boat thank you for the Ideal
I have a 60 Johnson with the same issues. Was this the problem?
Good tip thank you, for your time and video.
I'm going to try it, the mechanic told me that my motor is blown up but it runs fine until I give it gas!
Man I gotta get better at checkin my comments lol
Dudeeee I have been trying to find this answer
thanks.. i will try that tomorrow.. i have the same issues and you did....run's great on the trailer.. in the water no power or rpm
Rudy Helton did that work for you ?
no it did'nt.. but i'm not sure if the it's suppose to be 3 in all the way up the tube..it starts out at about 1.5 then flares out
Having the same issue on a 91 60hp Yamaha gonna try this on the weekend hope this works.. keep yous posted.
I've got an 2002 60 hp Yamaha with the same symptoms. Did this fix it for you or was there something else. I've been trying to figure mine out for awhile now.
Liar you never kept us posted
I have the same problem !!!! I need to show you my video .
just had that happen today ...boat I just got runs awesome in my back yard ....cant get it in plane in the lake
....im gonna check that ,never thought of it
Jon Patterson did it work for you?
lee bros Chauncey and quincy it helped it idle smother but mine ended up being a trigger problem in the ignition timing ....but it's not a waste of time it for sure helped
Electrical most likely cdi or stator
I need to check mines I have and ox66 runs fine out the water but under a load it does that to, not wanting to start. I change almost everything still does it.
I have one with the same problem I have already spent more than 2000 dollars and it cannot be repaired I am frustrated😭
Hey mate awesome video. I have a blue band 20hp mercury. My motor runs nicely it idles and starts fine but the max speed I’m getting out of the boat is 17kms/hr that’s with myself and my wife in the boat. I’ll take my lower leg off and take a look I’m hoping that a blocked exhaust is what I find because I’m lost for ideas now. Did yours do the same? Did you have trouble reaching full speed? Thanks
Yes I did
My 70hp yamaha can't go full throttle anymore, please help ! Great vid by the way....
Any luck?
I'm having this same problem now on an 85 Merc 115HP 6 Cylinder. I rebuilt carbs, rebuilt fuel pump (just for GP (general purpose)), did impeller while I was at it, still didn't run right. Found 2 coils that had intermittent spark replaced them, took boat out today and it would still bog, then it would clear up and go again as it should then it would bog again. I did run a full can of Quicksilver PowerTune in it before I took it to the water after the carb builds and today I ran it on the hose at night and checked for spark shorts and I noticed a lot of carbon around the prop hub. Your video now has me wondering if I might have a similar problem like you're describing. But I'm thinking mine is something else and will probably doublecheck my carb builds and fuel pump rebuild as my problem seems to be intermittent as it will clear up for short bursts sometimes, but long story short, your video is very helpful info and useful information for us shade tree mechanics to tuck away in our brain box. Thanks for sharing!
Dale Ellerbe did you ever figure it out
Probably cdi/power pack electrical before the coils
hmm maybe check the fuel lines and primer bubble, have you figurd it out yet? I too have a head scratcher goin on
I took the lower unit off and looked up inside but didn't see any blockage it was just black and suety.
Update I have a 2001 115 Yamaha outboard I'm having the same issue but I have no clue how to get to the exhaust line.
thanks for the tip
Bro you are the man. I was about to burn it. lol
Same 😂
Sledgehammer here lol
Hey there, good video.. what's your prop pitch on that motor pontoon setup?
No idea lol
Having the same issue on a 88 50 merc.
I have a johnson 120 that sounds exactly the same. I haven't taken it out since I went through the carbs...but if it's still doing it now...this would be another place to look before going into the ignition system! So where is the exhaust you cleaned out exactly? You say you pull the lower end out and can look up and see it? Thanks for the vid!
Yup, you will see it right off the bat once you get it off there and take a peek up inside, if that's what you end up having to do that is. Should have some nice carbon-soot on it to guide your way-make it easy mode to figure out-find. :) Let us know what you found out sir, love hearing folks problems and fixes... always good to hear about stuff to keep in the ol memory bank just in case. Peace!
Turns out mine was the fuel pump. Changed it and everything is back in order (at least last time out) Will see long term if there are any other symptoms but as of now my issue was fuel starvation with very similar symptoms.
How to fix holes on fibreglass boat
Trey Coursey my 89 Johnson 140 vro is doing the same thing it won’t plan unless I have a few people in the bow then it pick up speed could that be the same problem? As of now I can’t go over 3000 rpm unless a few guys go to the front now then it picks up slowly and still not hitting top speed.
@@xuxothao7199 If my memory serves me correctly I ended up finding that my fuel pump was not behaving appropriately. Once I replaced that (eBay) things were just fine.
Mines doing the same thing. I just called the mechanic and told him to check it! Thanks!
Does this fix it please?
My boat does this but when I’m in the water if I get someone to stand up front it will eventually go full throttle could this be the issue
Would/ve never thought of that! Good un!
Great fix for outboard
I have a 1988 200 HP Mercury outboard. Can't get it up pass 4000 RPM and it stalls when I slow to idle.. I have changed the ignition coils, wires , spark plugs, stator, Trigger Assembly and put in a new fuel pump kit. Still the same issue. Wondering what to try next. Ready to give up. Any suggestions.
Hey did you ever find out what was the problem with your motor
have a 200HP evinrude that won’t go passed 4500rpm in the water changed plugs,stator and cleaned the carbs wonder if this could be the issue?
I'm having the same problem, I already took it to 2 mechanics, one did carburetor kits on all 3 , the second one changed the choke solenoid, and all kinds of things, yet I go to the lake and I get it to run but as soon as I accelerate it shuts off 😥. I'm having a mechanic come by in a few days. If I get mine fixed I'll let you know what the problem was with mine . It's a 150 hp evenrude.
hey cheers for the tip. spent ... too much at merc dealership having switch pannel replaced, carbs rebuilt etc etc. same issue still there. they considering wiri g harness as its old motor and possible lots of probing harness over the years. but this could well be it. ill put it to them when i take it in, let u know the outcome. thanks again.
Freya Mac yessir, let me know
Freya Mac was it a clogged exhaust? What happened
Freya Mac .
They are robbing you like a doctor.
Had the same issue on a 1997 200 merc. The head gaskets get hair line cracks letting small amounts of water in the cylinders scorching the piston and cylinders. Not a cheap fix but that's usually the problem for the motors to work good out of the water and boggy in the water. Sorry for the shitty info.
Damn that's what I'm afraid of.
Can you send me some pics or a video of what to do exactly
Hey that's what going on with my boat so I take the propeller out?
I have an older model Mercury Mariner 25 hp motor. All summer it has ran great! The issue now is that all of a sudden, it will not reach it's full throttle. When i decelerate, in order to shift, it starts to die out, resulting in me having to maintain some form of throttle at all times to keep her running. Any suggestions beyond cleaning the exhaust? I am cleaning mine TODAY lol. Thanks again, for a great video!
I'm no boat mechanic by any means, but I always start with checking the plugs and carburetor.
Hey I have a 87 merc 25 hp with the same issue, ran awesome magnets fell off the fly wheel I got a new one and it hasn’t run right since, I’ve changed the stater, trigger assembly, coils, plugs, wires, and I’ve cleaned the carb several times, rebuilt the carb and fuel pump, new primer and fuel line on my gas tank, new upper and lower seals on the power head and still won’t run right, it starts easy idles ok but needs a little extra throttle to keep an idle, and when I give it gas it bogs out at 7 mph when originally I was getting 24mph, just curious what fixed yours
@@dylanbarese4492 ended up being plugs. Incorrect gap.
check your fuel hose those little o rings each end can gcet a hole in it letting air instead of fuel if dout tak a fish hook the oring jerk it out install new ring ( avail at boat shops) press new ring in with your thumb it will idle fine just want rev up starved for fuel check bothe ends of hose
Thanks man will give this a go tomorrow 👍
Add seafoam to your gas. It will remove the carbon over time
Mine the same thing I’m checking it
did the motor sound muffled? before you cleaned it out?
Not very
Did you have to remove the fluids before taking the foot off?
No sir
For the love of god, please show us a video of how to fix it. For the uneducated. I bought a used boat and my wife is ready to kill me because it doesnt work!
same
He tells you how to fix it tho
Mine done the same thing today man
I really hope this works on mine.
It idols great but in water no power like 4 mph.
Did you figure out what your problem was?
Sounds like you need an experienced outboard mechanic to do a ‘link and sync’ on the motor’s carbs, throttle and shift linkage ( I had the same issue with a rebuilt 75 hp. Johnson Stinger ).
Link and sync perfect done exactly by merc manual. 45 year merc owner.
Holy shit mine is the same thing ima get it a try thanks man
I had one just like it. I talked to Mercury personally. They told me the best thing to do was cut the cables loose. Next time you go fishing and sink it to the bottom. There was never a solution
That’s unfortunate
Hi I got a 60 hp johson vro (removed) and came with project boat.mech did major service and take out for run did well in water I towed to home.when I take it in water it's starting and slowing dying.and once it's in gear it working very well.once I stopped it not starting but cranking.any idea do u recon it's the same problem
BRISTO PAULOSE I have the same exact engine and mine is doing this. I rebuilt the carbs before this happened though. I may take the foot off tomorrow and check it. I just don’t trust this engine right now.
Oh my god thank you
Thanks a bunch 👍👍👍🛴
replace small orings in each end fuel hose tak a fish hook jerk it out press new ring in wth your thumb---- rings avail at any boat shop this cure s idle ok no rev up
Carboned up or low compression
Cheers for great vid!
Would power tuner remove the clog?
Mike Murphy it’s worth a shot
That sounds like what my boat motor is doing! Did you spray anything in there to help clean it ?
sorry for the late reply. No, I didn't. If you choose to, I'd recommend Carbon Off!, or something similar. In retrospect, I probably should've tried some lol
josh stringer 2
No thank you. I have a 50 merc and it bogs down and runs like a 9.9. Been racking my head on it for a year now
Did you take motor off when you clean exhaust system?
No
Was the motor pissing when the exhaust was clogged?
Yes
@@jstrings00mine doing the same thing yours was doing. Ima try to clean mine out and see if it helps it
My boat has a 25 horse johnson. It cranks and idles fine but when I twist the throttle it boggs down and try to kick in but won't. What could that be??
Scott Cozart I would suggest cleaning your carburetor, sounds like it is starving for fuel. Especially if it's been sitting for a while. Also don't run it on gasoline that has ethanol in it. The ethanol gums up the jets in the carb.
My 40hp 2 stroke motor cranks fine, but when giving it full throttle it only goes about 10 miles and hour. So, as I'm going up the lake I will put it in neutral idle it high for about 3min, then idle it back down give it full throttle then it runs normal. After fishing 4hrs crank it up again, same problem. Can you help me?
I would clean / rebuild the carburetors. Make sure you have fresh fuel and I would replace the spark plugs. That would be my first step. Inexpensive things you can do that may need done anyway.
can u make a video how to do it
Would the engine ever die with this problem if you kept on pushing the lever? And have you heard of this happening to Yamahas?
No, but I’m sure it’s possible
@@jstrings00 Would your engine ever die with this problem in the water if you kept on pushing the lever? And do you have a water separator on it? I appreciated your reply
@@mikesolns1364 No and no
Did it sputter out or flood out../ get worse when trimmed lower?.
No sir
I have been having a similar issue. But my boat also gets a long nonstop chime and it appears to be either steaming or smoking from the back as well. Did yours do this?
No sir
Same problem of my 75 hp mercury 1986 . The crank seal leak , May be the problème start this point . Inside the water with exaust back pressure engine stal at idle . Sorry for my english , i am french , any body is perfect . 🤣🤣🤣🤣
Did you say that in the water you only got 30 000 rpms ? Not bad for a stock Mercury. LOL !
Show what kinds of trailers,show you putting them on . I'm interested but you just holding the product shows nothing.
I have a 50 Hp mercury . Reve up good out of water. in water it will reve about 1/2 way. Runs about 14 miles in water?
Sounds like what I described in the video
I'm having a similar problem with my 115hp 2 stroke 6 cylinder out of the water put the muffs on and spray some fuel and air into the carburetor to start it but once out on the water it won't start at all any suggestions?
I would clean the carbs first and go from there
Man my did the exactly same thing what did you figure out that made it run better I have done clean the carbs out and it still doing it my Bub gets tighten when you prim it up but soon as you start the motor it won’t stay prim or when I put it in forward in the water it dies did you ever find an idea
Man I appreciate it what mine is doing is it cranks up goes in gear just fine but soon as I put it in water and it turns into forward or reverse it cuts off do you know what the problem is on that could it be the same thing
Mine is doing the same thing. Did you ever find out what it was?
Same problem I’m having.. any solution?
@@mattromo6179 there is a page on Facebook of Johnson Evinrude motor guys that give tips and advice. Johnson and Evinrude Outboards
anyone ever find out the cause? my mercury 40 dies when I give it throttle while in gear
Dam nobody answered any of us in this comment thread lol