Yamaha outboard overheating solved

Water passages not shown before, once I got it all together this motor is running super cool!

[@JohnSmith-pl2bk]

Use a 55 gallon plastic drum and slip it over the outboard leg standing it up as if you were running it in the sea. Pump a fresh water and Salt Away mix into the leg drum from the 55 gallon storage drum in which you keep the salt away mix for multiple uses... then run the engine at idle as per directions on the salt Away bottles... If you do this every time you run in salt water there will be no corrosion or salt build up in your engine... At the end of the engine run..... pump the mix back into the storage drum and take the 'run' drum off the leg... Job done. Every season check the thermostat for operation...it may stick partially open so the engine warms up too slowly...and won't allow full flow so it overheats at top revs.. Plus it shows you how much corrosion (if any) is likely to be in the cooling passages in the engine.

[@tcap7917]

Doing the water covers and heads are just part of the fix, thumbs up to this guy

[@401web]

Good Job explaining and showing what was causing your overheat issue. Thank You!

[@tidalserge4849]

Thats my motor and the issue i have , took down heads , was ready to put new gaskets, glad you showed the other water passages.. you saved me a lot of time.

[@Iwasyou-youwereme]

Great! Let me know how it goes.

[@marionapoleon2225]

Thanks dude it really helped me out this video🙌🏾 i was having the same issue, even after replacing the new impellers and cleaning the head gaskets my engine was still running hot

[@Iwasyou-youwereme]

Im glad I was able to help you guys!!

[@mohammedsamy9790]

new information to me with the same problem i have ,,,i will try it today with my motor and hope it will work with cause i have the same problem you faced ,,,many thank s for your new information

[@williamstadelmeyer3563]

Thanks for the video. Now I know what I need to do. Thanks!

[@patmason7276]

Welcome to salt water. Make sure and run a salt neutralizer.

[@sulimandc3467]

Thank you for sharing. It helps alot. I had the same problem

[@paulchace2391]

THANK YOU, AWESOME VID

[@mikehamm648]

God bless those who push back

[@tonybruno7848]

It looks like red rtv on that stabord head. When you tighten the head bolts you need to be careful that it doesn't squeeze into those passages or all your work will have been for nothing.

[@Iwasyou-youwereme]

I actually got rid of the rtv silicone, put on new gaskets

[@9999lan]

Thanks for sharing. I have a question, hope you don't mind. When you have the over heating problem, before you did the repair, was there water coming our of the telltale at all? Thanks.

[@daddyjoonb4273]

Yeah man. Cool video showing that water path. I have 1998 Yamaha 200 Saltwater Series and it truly has treated me well, but I noticed a little bit of salt build up and stuff outside one of the corners of this exact section. It’s at the bottom, actually both bottom corners look to be leaking or have leaked in the past. I brushed off the salt and have just been keeping an eye on it and it hasn’t changed but it had me worried. I feel a little better now seeing your video showing what exactly is behind that cover and what that big square gasket is doing. I suppose all I have going on in a leak or old leak that stopped in those bottom corners. Any advice? Besides seeing the leak build up evidence which I haven’t seen come back, there are no symptoms or overheating. Was it a long job taking that water jacket plate off? Did you have to remove the heads to get to it? Thanks bro!

[@Iwasyou-youwereme]

Hey, if you’re not overheating you should not have to worry, just flush it with fresh water after every saltwater use. Thanks for looking and asking. Love your Yamaha!

[@user-ig4ge2os9z]

I have 94 Mercury 150 over heating after changed water pump and thermostat, poppet valve. And new gaskets lol n heads still over heating,,,. Need help

[@Iwasyou-youwereme]

Replacing the gasket alone is not enough you need to do a deep cleaning of all water passages.

[@johnpower8356]

Good video but I have questions, obviously you run in salt water do you flush it after each usage? Not to insult, I flush every time I have a 1999 yamaha, salt water is so bad

[@Iwasyou-youwereme]

Salt water is bad! However I had just bought this boat and overheating became a problem!!

[@berkalp-zc8jf]

B4 taking it off can we use vinegar to run it flush it get it cleaned up what do you think?

[@Iwasyou-youwereme]

It depends on how bad it is. Take a peak on thermostat housing.

[@4jimmyj]

what do they call that gasket? part#?

[@Iwasyou-youwereme]

Try locating it at www.boats.net By your engine size model and year. Hope this helps

[@wadesmith4566]

Where do I order these gaskets

[@Iwasyou-youwereme]

Any local Yamaha marine dealer. Or try www.boats.net

[@islandtime211]

How's it running now is it overheating since you fixed it

[@Iwasyou-youwereme]

No more overheating!!!

[@leochapa9193]

Did that fix your issue?

[@Iwasyou-youwereme]

Yes indeed!!

[@arnoldtrevilla]

ok i just learned something from you. I have taken off my heads twice. in 4 years and cleaned them up and the water jackets as well. Runs good and doesnt over heat UNLESS i go slow(low RPM around 4-5 MPH) for too long during the day then it still over heats. I bet its that middle part. Brilliant. Nice work. I'm gonna do that job next. thanks!!! hope you dont mind if i post my video on here. I did the job as you can see on this video of mine but i missed that middle part which seems to be the most important part bc its where the water comes in. I bet mine is built up with crud also. kzbin.info/www/bejne/m2qvqpZobLZqeKM. im also going to post your video on my page if you dont mind so people can see how to do the whole thing correctly.

[@Iwasyou-youwereme]

Thanks for your comment, I’m glad is able to help someone!

[@markdarling7526]

I took my exhaust cover off the other day and it was covered in Salt residue. Also , broke 9 bolts and had to break the inner exhaust plate off as well as exhaust cover. Damn corrosion. Great clip.

[@cjharrin]

If its overheating at idle or slow speed this is usually just a thermostat issue

[@findvoltage]

there are many points at which this stupid yamaha engine has obvious faults. the temp alarm is one of the worst so far and no matter how much you know qbout engines the bastards always come up with new ways to do you over. f#@k ysmaha and f$#k their product. they should know better. damned them to hell

[@alinux09]

Lol take it easy buddy