Unseizing a seized outboard motor

This video is about freeing up an outboard motor that is seized and won't turn at all. Outboards can become frozen if left sitting for while but with lubrication and careful movement that can be brought back to life. Rust and corrosion are the biggest causes of an outboard seizing, but they can also seize from overheating, running out of oil or gearbox troubles. This video covered seizing caused by water in the fuel causing the pistons and rings to fuse to the inside of the cylinder bores.
For outboard repair information, checkout my website: outboard.danga...
If you are enjoying this channel, please consider making a donation to www.paypal.me/... or become a Patreon of Dangar Marine at / dangarmarine
T-shirts and other merchandise available at teespring.com/...
Common items used in these videos are available from my Amazon store at www.amazon.com...
Dangar Marine is proudly sponsored by MarineEngine.com. MarineEngine.com supplies a wide variety of spare parts for many brands of outboard motors. If you are in the US, be sure to check out their online store www.marineengin...
All music available at soundscloud.com...

[@navigator902]

Excellent ... kept me at the edge of my seat.... outboards are just that way... go in for one problem and end up fixing another... Thanks Stew.

[@DangarMarine]

There's no shortage of problems when outboards are involved!

[@paulpvhl1930]

Thanks for this. Just bought a 1966 6HP Johnson that is seized, though it was supposed to be a busted up starter pinion gear that I bought unexamined for $100. Never used or worked on a 2 stroke before, so your videos have been very helpful.

[@DangarMarine]

You're welcome Paul, glad the videos have been helping you.

[@bebru666]

Thanks Dangar i have a 20 hp 2 stroke Yamaha and im learning so much from you.

[@DangarMarine]

You're welcome Benny. :)

[@arthuray6049]

Danger I have a 25 hp mercury outboard that has a compression of 85-90 each cylinder what can I do to increase that ? Thank you great videos !!

[@mqiqkqer5750]

Very helpful, my boat sank as she was moored up wrong.. she was sat under water for about 4 hours every tide for 2 months before I was able to remove the engine, got he in pices now wish i had seen this before compleatly stripping her down to just the power head. Gives me hope she will live again with out the hassle of sending her off. Thanks from the UK.

[@DangarMarine]

Hi mate, you would probably have found that it needed to be pulled apart anyway if it had been dunked and then exposed to air every tide as that is about the worst case scenario for an outboard. Fingers crossed it will come good though!

[@matthewdenson3911]

Thanks! I'll need to get a Dangar Marine sticker for the cover of my Mercury 9.9 because it is running thanks to you and this vid. I really appreciate your vids. I have to listen a couple times cause I always miss something the first time and each bit is helpful.

[@DangarMarine]

You're welcome Matt. I'll have to get some stickers made up!

[@timstallons9301]

OMG man I just got done doing this to my 1978 Evinrude 70hp. Such a helpful video. Spot on as usual. you are the man. Neeed to clone you and set you up in my back yard and make tons of $$$. This was the issue with my Evinrude except I had outboard 2 stroke oil lol. Thank for your time and effort in these kinds of videos. You Rock!!!

[@DangarMarine]

Thanks Tim, glad you got your outboard unseized. :)

[@shandusama]

shouting out dangar from all the way in the Caribbean. . your a real inspiration.. keep it up

[@DangarMarine]

Thanks Keeshen, will try! :)

[@peteryeung111]

You seem like a very honest and hard working guy...good job! Thanks for the video.

[@DangarMarine]

Thanks Peter, you're welcome. :)

[@col2959]

Nice pic Bruce. You know what his fav drink was??? Waaaaterrrrrr. Take what is useful and disregard the rest🥊

[@su5119]

Good techniques. I inherited two vintage outboards when dad passed. A 1957 7 1/2 hp Johnson and a 1980 Johnson 10 hp. Both bought new. They have not fun for over ten years. It will be fun to get them running and use them on my dink. I liveaboard on an Ericson 35 and always in need of a tender that can run me into shore when anchoring out. Thanks for your site.

[@shoominati23]

ATF fluid is good to remove contaminants and also protects from corrosion. We use it on my mate's race engine liberally on a towel to scrubs away the carbon ridge at the top of the cylinder so we can remove the pistons without terminally damaging them. Not alot of people give thought to this process. But the stuff is great for any clean up work during a rebuild to remove deposits and inpurities. You can leave it right there when you reassemble the engine, it's not going to hurt anything. I think you could also benefit to use it to get the build up off of things like hydraulic rams, stubborn shafts inside your engine when you want to pull the gearbox and as an all round corrosion inhibitor that doesn't wash off in a minute like WD40, Just as a good going over with a decent amount with a rag on all exposed steel surfaces every time you bring the boat back in. Just a suggestion, I'm not trying to control you or anything man.. A friend said his old man used to work onb Cadillacs in the 60s and many cars would come in with noisy lifters (as they sat more than they drove and the maintenance wasn't always kept up to spec. Anyway, his solution was to dump out a few litres of oil and replace it with ATF and leave the car running outside for a couple of hours, he then dumped the oil and replaced it with fresh stuff and he reckons they were quiet as a mouse after that. Food for thought. I've unseized engines by putting a mixture of ATF and WD40 down the bores and leaving it for a day or two and then trying to see if I can turn it over by hand and rock it back and forth past the point of resistance and slowly keept repeating until it feels normal again. i havent been let down by this.

[@DangarMarine]

ATF certainly is handy stuff for many jobs. It's interesting to hear about it being used to fix the noisy lifters.

[@sportytone1]

Try 50/50 mix of ATF and acetone. It's commonly used for seized pistons on old engines that haven't been cranked for 30-40 years. Fill the cylinders and let them set in the hot sun for a few days. Shouldn't take nearly as long for outboards.

[@drews1718]

very well explained! thank you. subscribed just got handed down a 1969 6 hp Evinrude and a 1934 1.4 hp Johnson cant wait to play with em

[@DangarMarine]

Sounds like you've got a couple of interesting projects there. The '34 one must be a very cool old motor. :)

[@harls9287]

Well Done Dangar great video and good to see an Aussie having a proper crack. Complete with dry humour on the “Sounds So Dodger comment” it took me a second to get that one :)

[@monk1100]

Love watching your vids very educational, direct and easy to understand. These will and have helped me to carry out my own mechanics to my mariner 40. Cheers dude. Vince from England.

[@DangarMarine]

Thanks Vince, really glad to hear the videos are helping you. :)

[@kadensmith5515]

Dangar Marine the uojoy

[@MrPropanePete]

Pretty versatile workshop. You can bring your car and boat around and have them both serviced while you order Chinese take away or eat in at the Van Lee Chinese Restaurant, which presumably is within a stone's throw away...

[@jl.luizaraujo9820]

hi how are you, buddy? I am Luíz do Brasil, and I follow all your videos, I learn a lot, they are very good, congratulations, God bless you!

[@davidpowell3691]

Try adding an equal quantity of acetone to the ATF, it is the most effective freeing agent I have ever found. Love your work, Stu.

[@DangarMarine]

+David Powell Yes, I've heard very good things about that particular combination. Will definitely try it next time.

[@aeromaus99]

Thanks for the video, mate! I just received a seized Johnson 25hp two-stroke as a present. I hope my results will be as good as yours.

[@DangarMarine]

Good luck Miguel, hope it goes well for you.

[@damianwilkinson8983]

Your videos are really great! Thanks for sharing.

[@DangarMarine]

Thanks mate.

[@floridamansgarage8629]

I picked up a 9.9 johnson from the 50s! found it on the side of the road seized up and with your method, I brought it back to life I couldn't believe it thanks!

[@DangarMarine]

That is awesome!

[@derekharper7868]

Just found a free yamaha 9.9 on the side of the road myself! Hope I get lucky with it.

[@BigRiverLabrador]

@@derekharper7868how did you make out with your Yamaha 9.9? I just got one myself I’m trying to unseize it’s an 89 or 90 2-stroke

[@derekharper7868]

@@BigRiverLabrador Not sure yet. Don't know the year on mine but it's a 4 stroke. I do know it wasn't siezed. It just had a cylinder full of oil, so it's now moving well but I haven't had a chance to attempt to fire it up.

[@Martinmerton]

@@DangarMarine - quick question. Your video has been super helpful. I have a seized 18HP Tohatsu. I’ve removed the flywheel and there is a nut holding the starter in place. I can unscrew the nut but if I’m trying to rock it should I be tightening it as much as I can clockwise to try to get it to turn? Is there a threat of over tightening the nut? Or should I just keep trying? Thanks for your help.

[@terencegillespie6675]

Thanks for your training. I've got a post hole drill, E85 Earthquake, that locked up on me by surprise. Was running and seized after shutting down. No restart. Huh. I never forget oil in gas so go figure. I'll try your method soon. Short blocks aren't cheap.

[@scottmckenna9164]

Your a good teacher. Easy to follow, clear, to the point. Thank you for increasing my knowledge of outboards.

[@DangarMarine]

Thanks Scott, glad you like the vids.

[@joemartin6439]

Great job mate

[@salimmohamedhusein6282]

Great video i love your work

[@DangarMarine]

Happy to help. :)

[@TheWaterflyer]

I thought you had a chinese restaurant upstairs until you showed us today :-)

[@wynottgivemore9274]

Thanks, lots of good tips here...👍👍👍

[@wish2fish37]

I tried soaking Pistons on old motorcycles that had stuck pistons and had no luck.I saw a video where someone pumped grease in the seized piston on a mc and it worked to unseize it.They made a fitting out of a spark plug.

[@DangarMarine]

Interesting, I guess it does allow you to put the grease in under pressure with a good grease gun.

[@theoldwizard998]

"Never fix a boat without coffee." Reminds me of the blokes on Project Binkie. Lots of tea and biscuits !

[@DangarMarine]

I love watching Project Binky! That guy has amazing fabrication skills. :)

[@gregoryball9504]

Well done, friend.

[@chriseisele9969]

Great video keep em coming 👍

[@DaebakMonkey]

Dang that was one heck of a seized motor. And that boat is old! Trimcraft went out of business in 2001.

[@DangarMarine]

+DaebakMonkey Yeah, it wasn't in great shape. Aluminium boats last a long time though, mine was made in the late 70's and still going!

[@DaebakMonkey]

That's what they are made to do! Work work work, and keep on working!

[@barrywarner2331]

Excellent. Many many THANKS.

[@DangarMarine]

You're welcome Barry.

[@hadjiic]

Dorian, you should have a tripod to set so you can work with both arms and hands

[@alfredbryant8328]

Thank you Mr. Dangar for your meticulous tutorials. I actually enjoy when things don't go as planned and all your tangential knowledge experience pearls that arise from the vicissitudes. I own and old 1995 Mercury 2stroke 75 that appears to be just like your own 95hp. I have lots of coughing and misfiring that I cannot improve. Can you provide some insights on what usually goes wrong with these old mercuries?? Thank you so much for all the information and hard work on your part!

[@supertramp6011]

Alfred Bryant almost always dirt or water in the carbs buddy.

[@garykirkpatrick2636]

I had a 60 HP mercury that would cough and misfire. Sometimes it would quit when trying to accelerate. I checked everything else but finally found out that it was the fuel line connector from the gas tank. The seals had shrunk from edge and we’re leaking air causing intermittent lean condition. After replacing the fuel connector it ran perfect from then on. Cheers

[@19baitmaster51]

Some years back, a friend gave me a 6hp motor. Said it was seized up. I thought what the heck, I'll play with it. Got it home on a pretty nice wood engine stand that he had it mounted on. After 5 min, found that it was in forward gear, and the prop was hitting the bottom of the stand.

[@DangarMarine]

LOL. That happens. :)

[@joerillarilla8524]

Lol hopefully you found that out before pulling your hair and banging it with a hammer LOL we've all had silly things like that happen I got a 2.5 Nissan with a long shaft that would always get water in the fuel if it stayed out in the elements I bought a Yamaha and never have any more trouble but my Yama is a 4-stroke they are way more reliable 90% of the time it's a fuel issue with outboards I find that as long as you use them all the time and keep good fuel in them they won't give you a issue. It's when they sit impellers and seals dry up and cylinder walls not lubricated we've been had a little bit of water in the fuel even worse Salt Air around the Rings dead giveaway when you pull the plug and see corrosion

[@marcostet]

i just subbed! your vids are very educative and really addicting! keep it up!!

[@DangarMarine]

Thanks Marco, glad you've joined us. :)

[@marcostet]

Dangar Marine your welcome dangar!

[@jazldazl9193]

I applaud your knowledge sharing. Thanks dude!

[@derickmccarrell9593]

Wow..... I’m watching video after video trying to find why this Yamaha 25 has no spark. I won’t list everything I’ve done trying to figure out why. The entire time it was the kill switch not hooked up. I feel sick. You’re right though, that’s one mistake I’ll never make again. Smh. Thanks!

[@DangarMarine]

Don’t worry mate, that’s a mistake we’ve all made. Glad you got it sorted! :)

[@philipdonoghue7211]

Absolutely fantastic video, can I ask please why you added 200mls of 2 stroke oil to 10 litres of petrol. I have a 15hp yamaha 2 stroke engine like the one in this video. I though the file mix ratio was 100:1 . Was it because the engine wasn’t started in such a Long time that you made the mix so rich. My johnson 2 stroke engines 8 and 6hp take 50:1 but my Yamaha 2 strokes 8 and 15 are all 100:1. Again fantastic channel!!

[@trevorhanlon471]

Good work Stu, Everytime I try to rock back and forth a seized motor, I just seem to loosen the flywheel nut :(

[@DangarMarine]

Thanks mate. Yes, that is a problem if it is really seized. Let it soak with a combination of ATF and acetone then try pushing it in the direction that tightens the bolt only until it moves a little bit .

[@fw1421]

A seized engine like this may be gotten started but it will never be quite right until the pistons are removed and inspected and most likely the bore needs to be at least honed to remove the pitting from the corroded rings,and new rings installed. This is a stop gap measure.

[@ckm-mkc]

It's a beater boat - changes are it will run for as long as people need....

[@kitten_processing_inc4415]

But I guess using it the way it is won't make the eventual overhaul any harder, right? So you get another couple of hundred hours of motoring "cost free", before you do the eventual overhaul. A lot of people don't really use their outboards to their full potential so a bit of lost power from wear and pitting of the bores and rings won't matter to them.

[@mpccenturion]

Your vids are always inexpensive ways to fix neglected or minor abuse issues. Lawnmowers and chainsaws were my into to the fixing world. Never did it for a living, but always enjoyed the adventure of figuring out what happened. Cheers

[@DangarMarine]

Thanks mate, it is fun getting to the bottom of faults with motors. :)

[@bigart15]

Great job !!!!!

[@DangarMarine]

Thanks Artur! :)

[@ThePulzeGamer]

Love these videos :) i dont have any outboard problems but theses are great to watch to learn something new if they do happen :) only have 4 hp haha , but getting a 15 hp in 2 weeks :)

[@Fireship1]

Great videos man. Love your work ethic. You explain everything in detail and make it easy to understand. Subscribed! Jack in the USA

[@DangarMarine]

Thanks Jack, glad you like the vids. :)

[@patrick9761]

thanks so much for your info big fan

[@DangarMarine]

Thanks mate, glad you like the vids. :)

[@JOCKATEO]

should use boiling oil as heat oil in a pan until its boiling and pour down the bores

[@elspaniard002]

Another wonderful video in which I can hone my skills in the world of outboard mechanics/repairs. Thanks Dangar!

[@DangarMarine]

You're welcome! Glad you enjoyed. :)

[@col2959]

Another excellent video with step by step explanation. Could you keep an eye out for a cheap skid steer ( mini bobcat) we could fix together please. Regards col

[@dnixon1974dn]

good vid pal.

[@DangarMarine]

Thank you!

[@user-ym9wb2mk5e]

Stu.... Been watching your videos for quite a bit of time now! I really appreciate your detailed info/suggestions, humor, and real world experience when working on things! Working on mechanical things like engine/outboards, boats, and vehicles are a passion of mine but not my daily "profession", so it's nice to get all of your experience. Its def helped me fix some outboards lately! That's not always something a college or manual can teach a person. Subbed and will be getting some swag!

[@DangarMarine]

Thanks mate, glad you've been enjoying the vids. :)

[@Martinmerton]

@@DangarMarine hey just came across your video and it is a huge help! Thanks so much for sharing. I’m going to clean my carby now! Quick question. I have a seized Tohatsu 18HP and I’m trying to rock the starter but it has a nut holding it in place. Should I be gently tightening that bolt (counter clockwise) to try and get it to move? When I go the other way it undoes the bolt. Any advice would really help! Thanks

[@Larmerfarmer]

Hi Stu, love your channel, I’m new to boats and outboards and you taught me loads. Have 21” Picton with 90hp mariner 2stroke, not been started for a few years and has been on the boat in tidal river in the lowered position. It’s not seized but is very tight to turn over with a ratchet, watching this video has given me the techniques sort it ! Only question I have is about the impeller, what are chances of it be ok ? Thanks again Stu. Ps where can I get a T shirt ?

[@DangarMarine]

+Ben Farmer Hey Ben, glad you’ve been enjoying the vids. Chances are the impeller is fine. When you get it started keep and eye out for a tell tale. If you don’t get one within about 30 seconds, switch it off and go through all the things in the “No tell tale” video. A link to the t-shirts is in all the newer video descriptions.

[@Larmerfarmer]

Dangar Marine many thanks Stu I’ll see what happens and let you know ! I’m in the uk by the way, any t shirts on the board from here yet ?

[@charlescauchi4096]

Thanks great Vidio

[@DangarMarine]

Thanks Charles. :)

[@ebrown5326]

Thanks!

[@caddiman9834]

That was awesome.

[@user-xw8fg9ec5c]

Thanks 🙏

[@turtlemann14]

i'ma get to do this on a 6 cylinder here soon, merc 1150 that has been sitting for a long time

[@DangarMarine]

+jon “tweakit” spon Yeah, if they sit for too long they can certainly start to seize up, but they have every chance of coming back to life.

[@C1iffBurton]

I have a siezed up motor (40 hp 3 cyl. tohatsu), pulled power head to take apart thinking catastrophic damage was done and ready to go internal on it, well all looks fine other than siezed rings, been soaking the rings like you did, how should i go about trying to free up the rings from cylinder walls? with it sitting on a work bench? impact gun on top of crankshaft and go slow? heat up cylinders and try to get it turning that way? not sure other than placing the powerhead back on the motor and bolting back down and using a breaker bar like you did thanks, broken down atv motors, lawn mowers, car motors, but never an outboard motor. you gave me the convidence to tackle my fears

[@DangarMarine]

+C1iffBurton Hi mate, glad the video has given you some confidence to tackle this one. I would be inclined to use the breaker bar without heat as you will get more feel through the handle of the bar and it is a large area to try to heat three cylinder bars uniformly. As you say, you'll need to have it locked down good and tight but it needs to go together in the end anyway. Let me know how you get on. Stu

[@RobFreakDj]

Set fire to it if nothing flammable around, fill the bores with white spirits and light it with a blow torch, make a press using steel and a car jack and press the pistons out

[@troelsbirkedal8299]

When putting the wrench on the top nut, and moving it forward and backward, the nut just becomes tightened or untightened? Did you say that you say that you put a break in there, or was that just in the video? nevertheless, how to work with it - I am afraid to break the bolt that the nut is on?!

[@DangarMarine]

You do need to be careful as there is only so much force you can put on the nut before it will strip the thread. You could try heating the oil and letting it soak for a few more days. Some motors are just too seized though and need to be disassembled to free them up.

[@beachdetectingthemoneypotb7265]

Worked for me , got me out of the shit on ice skates , miracle , now she runs , I didn't have probs with the fuel ⛽️ just the seized up bit , after buying a engine and not even trying to pull the cord before I paided up , big mistake , seller was on board the whole time for refund , but with your video it all came up trumps 🇺🇸for everyone 🇦🇺

[@DangarMarine]

Nice one Tim, great to hear you managed to save another outboard from going to waste. Enjoy!

[@beachdetectingthemoneypotb7265]

Dangar Marine the seller was happier , I knew where he lived , check shit out before you hand the cash over , just before you let him put it in the boot of your car for you , without checking , even if it looks new inside garage Lucky 🍀 this video got me out of it Buyer beware 🍭

[@TheLifeUnderwater]

Thank you!!!!! Saved me 500 dollars, love your videos

[@DangarMarine]

You're welcome Grant, that's what it's all about! :)

[@scotthummel4248]

About that Subaru.... Take any and all electical connections and dry them out! Use wd40. The wd stands for water displacement. The 40 stands for the 40th attemt to get it right. Anyway once dry, put some electrical connector grease in the plugs. If you dont do this, you will have many issues later.

[@Rickimusic]

Just curious, can any of that ATF or anti seize get into the lower unit; like via a leaking seal? I have never seen a twin cylinder of such low horse power, is this common in OZ? Us Yanks suffer with larger and larger single cylinder engines, especially in riding mowers and very rare are 2 strokes. Stay safe folks, I fear this virus could explode due to idiots, from the top down, in many countries.

[@DangarMarine]

No, can't get into the lower unit. Well, it will run out the exhaust, but won't go into the gearbox.

[@williammoomaw5027]

fix it in the AM or the PM, its all good with the right beverage...lol

[@jimv1484]

Just had to say something. Thanks for your time and efforts. Thank you for the education......I have a 99 johnson ocean pro 150 so your videos were extremely informative for me. Keep up the good work my friend.Cheers!

[@DangarMarine]

Thanks Jim, it always makes the effort worthwhile to know the videos are helping people. :)

[@sea_knot]

Im very sorry, but what i see is holy moly sh...! You did not solve the problem, it was not piston problem. It is a regular problem for modern ( all models after 2000 y.m.) yamaha 2stroke. To fixit you have to take off powerhead and clean underblock yoke, what is always rust and start holding a midshaft so tight so you can not crank the motor. . If you leave it for next 2-3 month it will stuck sam way.. if you see clear in begining you can pull a very very small ammount with start cord that means your torque is going through crank and you catch a gap in connection between crank and midshaft. That is exactly underblock pinion(yoke). Do it again!

[@peggybarfield3249]

got a 9.9 mercury rings seized to pistons lost compression any suggestions on how to unstick

[@kingfishstacy]

Nice video, Reminds me of when I was a kid working on 2 stroke motorcycles. im 50 now and still a kid hahaha Great vid I love engines and anything mechanical, just don't like the greasy hands anymore.

[@g-n-g3576]

Thanks for this. I was prepared to pay a guy a bundle to look at my motor. Cheers! 🥂

[@drfiberglass]

Remember, never force anything just get a bigger hammer..

[@DangarMarine]

The golden rule is "never force anything on camera."

[@peteramberley9952]

have you done any vids on how to shim a gearbox ? i have a 75hp yamaha to do. mine kept smashing gear selecter s when jumping out of gear .so i bought secound hand pinion and forward and reverse gears but binds a bit when hand assembled

[@DangarMarine]

Hi Peter, not yet, but I would love to do a series of videos going deeper into a lower unit.

[@gringoloco8576]

What is metho? that was used to clean the fuel tank?

[@MrWilliam.Stewart]

Seize the moment. I'll show myself out

[@iantyler4045]

Watching your videos during lockdown has kept me sane and I've learned so much. Very well done.

[@DangarMarine]

Great to hear!

[@sprezzatura8755]

Industrial vinegar also helps free rusted and seized parts. Never work on a boat without coffee! 😆

[@vkhiev]

Never fix outboard without coffee ☕ in morning or Beer 🍻 in afternoon 😁🍺

[@jammasterjay]

Under what authority did you seize the motor?

[@DangarMarine]

LOL. I just bought some mirrored sunglasses. 🚔

[@Drbones110]

I'm getting ready to fix my 90's model boat and evinrude 115 thats been sitting for 15 years.I have watched almost every video you made,and that gave me the confidence to do it. I'm sure i will be asking some questions later on, and film a bit you can use on your show, for the what not to do sections.If it works i'll send you some beers.

[@DangarMarine]

Thanks mate, glad the videos have been helping you. Good luck with the project!

[@anthonyhill2333]

I plan on doing this Monday..Johnson 120 has been outside sitting upsince IRMA..soo follow this build..on microskiff.com

[@sarah87uk1]

Hi dangar,do u have any videos regarding bench testing an outboard ie bridging starter to get it going if u didn’t have controls thanks

[@DangarMarine]

I mate. Not exactly, but these two videos should give you all the information you need kzbin.info/www/bejne/iX-UaJx4gZqfptU and kzbin.info/www/bejne/gouqn36imdZ3qaM

[@loaded1981]

Hi just wee update on the Suzuki the fly wheel key was broken did not have 1 but got 1 coming so should be good to good when it comes thanks again all help is appreciated

[@DangarMarine]

Glad you got to the bottom of it. Fingers crossed the part will arrive soon!

[@gegeeighth6613]

although I do not understand English but I like to see your video explain very much

[@DangarMarine]

Thanks you, glad it helped you. :)

[@rodashford1151]

Dangar Marine I have a yamaha 3 cyl 40 that stalls when on idle, any ideas?

[@jimbogasoline8559]

Rod Ashford Fuel related bud. Try choking it right before it dies and if it makes it run a little longer than fuel is your problem

[@rodashford1151]

Jimmy Chongo yeah all sorted now, it was a blocked jet

[@jimbogasoline2042]

Rod Ashford Cool glad you got it running!

[@walter2990]

I love your videos and have learned a ton from them! There's always another way to do anything, and sometimes another way is better! I once had a motor go under, while tied up to the beach. the transom was facing the small waves all night long, and the bilge pump failed. The small amount of spray from the waves hitting the back of the transom accumulated in the boat during the night (while I was busy drinking far too much beer), and the hull filled up with enough water to sink. So, about 10am the next morning, hung over and still sleeping, one of my drinking buddies from the night before, stopped by my camp and woke me up asking, "Hey, why is your boat under water?" I hoped that he was kidding, but he wasn't. (There's a lot more funny details that go along with this story, but I'll skip to the reason I'm writing this in the first place.) When I was finally able to get the boat back onto the trailer, I took out all of the spark plugs, the air box from the carbs, and just shoved as much fresh water through the engine, that I could from the hose. Spent about 45 minutes douching out the entire engine. The starter actually still worked and so I sprayed 4 cans of WD-40 into the cylinders and the carbs, while cranking the motor and running down 2 car batteries in the process..., and created my own Haz-Mat scene! (Helpful Hint: Don't try to remove a full sized battery from a boat, STILL submerged in salt water..., it really tingles!) It was a week later that I was able to start tearing down the engine, and found ZERO corrosion! Moral of the story..., if you can't do anything else to a motor which has submerged, except flush it out with fresh water..., DO IT! And don't worry about getting anything wet, cause that's already happened! God bless the man who created WD-40! YanceyMan, west central coast of Florida

[@DangarMarine]

Agree completely about flushing with fresh. You can also soak the starter in ethanol to draw the water out of the winding. The other thing I would normally recommend is getting it running as soon as you can after it has been lifted.

[@daveroberts6884]

WD-40 in my experience is both water soluble and oil soluble. It looks like it took care of the water. I think I will keep a big can on my boat. PS: You can remove oil stains from clothes with it, just spray and put in the laundry. It washes out and leaves nothing behind.

[@jammasterjay]

Under what authority did you seize the engine?

[@charlie1935]

Hi Stu, if I may call you that (maybe Mr Dangar??), names Mike from canada. Your vid's are the best boat repair vid's on "the youtube!" bar none!! Do you have a patreon account, how can I donate/pay for excellent video's?

[@DangarMarine]

Hi Mike, Stu is fine. :) Glad to hear you have been enjoying the vids. It's funny you should mention Patreon as I am in the process of trying to set up an account to free up some time so I can make better vids and also to fund the boat building project I have just started. It's not ready yet but I do have a PayPal link on the channel page and any donations are always greatly appreciated!

[@campuskorea]

Great video! Do you know where I can get the compression tester?

[@sambreadman8530]

It worked! I seized up a 35 merc. Used PB Blaster and Marvel Mystery Oil as I figured I needed every advantage possible. Let it sit 3 days then very gentle back and forth with the breaker bar and it broke free. More oil in it for another 24 hrs, few more spins then set it up to start. Shocked when it fired up. Great video! thanks so much.

[@DangarMarine]

Glad to hear you got it running again Sam. :)

[@thilltony3362]

Very nice video. One tip you may like, is to add about 25% acetone to your tranny fluid when using it as a penetrating oil. I learned this from a machine shop, and it really makes a big difference in how well and how quickly it releases frozen parts. Good job on bringing that motor back!

[@DangarMarine]

Thanks Tony, a couple of others commented about adding acetone to the ATF, it certainly sounds like the way to go.

[@leonarddutra1739]

i recently flushed my outboard but been having trouble with tell tale i did change impeller but was just a trickle and then stop any ideas because now shes seized

[@MrWilliam.Stewart]

Wow, you rose the dead there! Bloody good effort.

[@DangarMarine]

Thanks mate.

[@cmount88]

The ATF you put in the spark plug holes, how would I go about getting it out of the motor before trying to start it up?

[@DangarMarine]

Just crank it over with the spark plugs out. Put a rag over the holes though as otherwise it will fly across the room. :)

[@Whalermansteve84]

I need to pull out my old 1987 25 merc 2 stroke from my shed and rebuild it. Been sitting too long

[@DangarMarine]

Hi Steve, sounds like you've got a fun project ahead. Good luck! :)

[@Whalermansteve84]

It's more of a total restore then a project lol. But it's my first boat motor I've owned that my father gave me

[@vladimirec]

Thanks for that great video. One question: After you unseize it, do you hear clinking when you hand turn the flywheel? i can hear the clinking when i hand turn it, but my compression is still between 80-90 on all cylinders. Is this bad?

[@luckydubeinrc5165]

Stu, my 2.5hp Mariner for the dinghy had a do over recently, (brother in law fell over in shallow water with canoe :) Anyway, opened the 2.5 hp up after a year due to bearings (suspect) could not find the proper bearings with the pins locking the bearing, I used ordinary SKF/FAG bearings to replace it, seals were ok, (could not find them locally ) motor runs perfect, carb inlet had a small piece of gunk (restricted inflow) making the motor fail after 200m or so, after the carb inlet cleared , all ok, fishing the estuary having fun. :) Remembered your video, cam e here to revisit it, thanks. Johan

[@DangarMarine]

Hey Johan, glad to hear you got your engine running again after it's swim. :)

[@ThatBoatGuy]

These motors are hard to kill. I had plenty

[@DangarMarine]

+eric edic They sure are. This one has been underwater twice and now this water in the fuel problem. It just keeps going! :)

[@ThatBoatGuy]

here in the US people pay crazy money for them because due to EPA regulations last year they were sold in the US was 2010. Everyone wants 15hp and 25hp yamaha 2 strokes here

[@DangarMarine]

Ah right, I should post them over...

[@ThatBoatGuy]

that would be great lol

[@kalsaumesatungiamata9066]

Thanks mate . Learning so much from you. 2 strokes will never die, unless the tree huggers become dictators and rule the world

[@alextornello4755]

Just getting started on this video and loved the comment about never working on a boat without coffee.

[@robertnardoo5792]

thanks you for the video it was very helpful to me my. Out board is sucking air so I think I can fix the problem now very good and helpful

[@joerillarilla8524]

PB Blaster works I like to use Marvel Mystery Oil I've unlocked diesel motors that has sat for years all you got to do is pouring on the cylinder let it sit for a couple days and put a big ass wrench flywheel bigger the motor bigger the wrench her big motors I use a cheater pipe outboards normally not necessary

[@billbriscoe9414]

Never try to fix anything without Coffee Mate! :)

[@DangarMarine]

Never! ;)

[@marksmith9194]

I have a chance to buy a 1970s Johnson 9.5 hp outboard that is frozen for $40. After watching your video, I thought to myself "What do I have to lose?" Thanks for taking the time to explain everything.

[@DangarMarine]

+Mark Smith Good luck with it mate. At the absolutely worst you will learn a lot about outboards as you try to get it running. Go for it! :)

[@MarineRacingTeam]

So my friend gave me a 1992 Nissan 18 hp short shaft outboard for free, and it’s seized. I put wd40 in the cylinders and it dripped out the bottom around the exhaust. What should I do?