1988 Johnson 9.9 hp with the Big Secret the Final chapter 15hp Is it really fixed
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- Опубликовано: 24 июн 2023
- I finally figured out what is going on with the 9.9 Johnson.
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www.sterndrive.cc/
Drive Shower: www.sterndrive.cc/product/Fit...
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Trim pump 1986 to present www.sterndrive.cc/product/Fit...
Trim pump assembly s/s www.sterndrive.cc/product/Fit...
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Johnson/Evinrude/OMC New OEM GASKET fuel pump
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Aluminum 3-Blade Propeller - RH, 10" Diameter x 15" Pitch x 14-Spline:
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Video equipment used
Canon EOS M50 Mirrorless Vlogging Camera Kit with EF-M 15-45mm Lens, Black
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Comica BoomX-D D2 2.4G Wireless Lavalier Microphone System Digital 1-Trigger-2 Wireless Microphone Transmitter & Receiver SLR Clip-on Micro phone,Lav Mic for Smartphone Camera Podcast Interview
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email me at
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mail me at
RMD Creations
PO Box 387
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In maintenance, SHIT HAPPENS! Learned back in 1998 about Seafoam. Did everything I could to get a 1968 Johnson 20 horse running good. Double checked everything to include the carb. Had an occasional miss and rough starting? Let that engine sit all winter with seafoam in it. When I would walk by It all winter I would pump the fuel ball. When spring came, I put the muffs on it and started it. The thing started right up, smokes real bad for a couple of minutes and then ran like a new motor? Since then, I use seafoam in everything that I own with zero problems. Once a year, I put a whole can of seafoam in my auto oil change for 3 to 5 thousand miles and it cleans your system spotless. Good stuff for all gas and diesel engines.
My father always ran our 15hp Evinrude out of fuel also. He even would pull the choke and start and run all that remaining fuel out as well.
Only rebuilt the carburetor one time in 20 years he was alive. I still have it.
Don't ever let it go, thanks for watching and sharing
Getting that last few drops of fuel by pulling the choke sure is good practice but I found over the years that the "weak link" is the line running from the tank to the engine. People just let it sit full of fuel which slowly but surely desintegrate the insides of that line. Priming your motor the next time around just fills the carb with rubber debris, the longer the delay between usages, the more debris it generates. Before leaving for the lake, I always stick a fuel connector on the engine's end of the line and sqeeze the priming bulb untill it spits out clean fresh fuel. Regards !
So I’ve been following along the past month and recently rebuilt my 9.9 last week. Thank you for the guidance! 🤙🏼
Great to hear! Thanks for watching
I would just like to say your vids are getting better and better each time, always look forward to your new vids. you seem so more relaxed and your humour is starting to show, men woman and those in-between, lol that got me good.
Wow, thank you! I'm trying really hard to make the best videos I can with what I have, thanks for watching
Good to see the mystery solved! Looks like a great running unit! The drone view definitely shows the pilots struggle for comfort on the boat lol! Great stuff RMD
Yes it does! It was a rough morning, the wind does not always work in your favor. Thanks for watching
I still have a 9.9 Sail Master and a big box of parts around here somewhere. The engine ran great last time I ran it, but it has probably been 15 years. I have a long shaft kit and a whole long shaft leg too, but I think the leg is a 74, but it is still the same generation.
I can't think of a better definition for 'maddening'. an outboard that develops a new problem just when you figure it out. Awesome work Micheal...I learn something every time I watch one of your vids!
Exactly! Thanks for watching
Thanks for posting a video today.
You bet, thanks for watching and commenting
Such a good feeling when a long time head scratcher is fixed. I hope my 91' evinrude i been working on for a year runs this well
you'll get her running, persistence will pay off. Thanks for watching
Awesome! Love that motor. I want one.
So do I, get you one and have fun.
Michael like your buddy TOO says never assume anything. On a serious note glad you got it figured out. Thank you for all your teaching and tips Chris from OHIO gooooooo Buckeyes
Just like TOO says, as long as you got compression, everything else is a pain in the rear. Thanks for watching
For those that wish to check there voltage of the ignition, CDI has a Peak Reading Voltage adapter part # 511-9773 with leads attached AND #511-9773NL without leads.
With is about $112.00.
Voltage on omc early cdi is generally 150 + between Brown and Brown and Yellow wires. I've seen 400 volts on a real hot ign.
Engine must turn at least 300 RPM'S to test properly.
Trigger OR timer base ( on OMC ) SAME thing is .5 volts + ( seen 20 + before).
On an OMC the WHITE wire is the ground wire , the other wires are the the ones going to each cyl.
Remember this also ! On a OMC power pack the coil leads ARE :
BLUE stripe #1. Green stripe # bottom cyl.
NO stripe middle cyl.
Remember blue = sky or top cyl.
GREEN = GRASS OR bottom cyl.
Forgot to say you will need a voltage meter that is 400 volts DC or more.
( MULTI METER ).
HOPE this helps y'all
Located your part number and will most likely order one, thanks for the information and thanks for watching
Doctor Michael......your patient is all better now!!!.......Nice job!!
It can go back to work with no restrictions. Thanks for watching
This video takes me back to the early mid 80's when I was given a 1957 Gold and Blue Evinrude 7 1/2 hp with just a clutch knob on top to disengage the prop, reverse was spin the motor around 180°
When I received this motor I was told that the head gasket had been replaced and it would run but overheats rather quickly.
A test run proved that it did indeed run and overheat very fast, I did notice there was no water flow from the outlet port on the middle section.
Took the pump apart only to find everything was in good working order, was able to run a long stiff spring up both the water inlet tube and the water outlet all the way to the crankcase by measuring against spring length with no obstructions, replaced the rubber tube seat on the pump still no flow,
Now like you fast forward a few years cause I had given up on it, I had a dream one night as to what the issue was, I removed the head to check the gasket and found that someone had hand cut a head gasket and failed to put any water passages in the gasket only bolt holes.
I installed a new OEM Head Gasket and guess what? I now had water flow and cooling and I still have and run this very same motor to this day.
So the moral to this story is as well as yours Don't believe what you are told as people will say anything to get rid of somthing they don't want.
Glad everything worked out for ya in the end. Now you have a great running motor.
all true, thanks for sharing and commenting
Big Smile!!! Great job!!!
Btw, I never knew there was a difference between plugs. Good to know.
Thank you! I do like it when them outboards come around to my way of thinking. Thanks for watching
A friend has a 9.9 with the same problem except the engine will run on 1 cylinder. I'll recommend your fix and video to him.
Sounds good, thanks for watching
Great job !!!👍🏼👍🏼👍🏼👍🏼👍🏼
Thank you! Cheers!
Thanks for the ride along on the 15hp dressed up as a 9.9.
I think many of your viewers cheered as you solved the problem. Reading the comments l learned l should be running the motor dry at the end of the day. Clearing the fuel line is a great tip also. If your using a 4 stroke motor on a weekly basis in the summer. Should one run the carb dry too?
Thanks again for your perseverance
Cheers
I would just make it a habit on all outboards myself , thanks for watching
Bad head gasket was a good find motor sounds great in the world of 15 and 99 Johnson’s. They all started out at 15 hp and 99 is a detuned 15 hp no big secret can’t wait to see the river test.
All true, thanks for watching
Glad to see it's running well, nothing wrong with those speeds at all. I remembered you having it running fairly well a couple years ago. Maybe something happened lugging the banana around and then kept chewing on the gasket the more it ran.
Anything is possible, it is 35 years old, thanks for watching
Love those motors! Lots of go and troll all day! Good on fuel. Great fishing motor 👍😬
Michael don't feel bad we Understand I' wanted to know more about 9.9 outboard I love when you want to rebuild your Engine keep up good work I still really Appreciate you 🙏
Thanks for the kind words and for watching
CDI ignition is the best by far.
In the 25 years of useing there products I don't believe I've sent back 2 maybe 3 units.
There TECH side is more then great.
When I did need there assistance together we would walk thru the issue.
If I found a rare issue I would call them and see if they ever ran across this seemingly rare issue. At times they had not and was glad I called.
We are ALL learning and it never hurts to share idea's.
You won't go wrong with CDI.
At one time a long time ago the company was called RayPair.
Ray was a wonderful guy.
I remember him always saying, he had no use of the surface gap spark plugs. ( mercury )
He always recommended using the J gap ( old school ) plugs.
And he was correct in my opinion.
They idle better with J gaps .
The L77JC4 is the L76V surface gap heat range.
I use L77JC4 IN MANY Mercs. Plus the QL78JC4 ,Extended nose plug.
Just one heat range more. And in a little fishing engine like here that sees a lot of idle or trolling speed it doesn't hurt to have one heat range higher.
Also. Some older outboards have high compression.
I recommend using premium fuel and 40:1 fuel ratio.
Motor will last longer because the higher obtain will help keep dentenation down.
Copied all your info into a word doc for future reference, thank you so much, and thanks for watching
Another Awesome video 👍👍👍👍.. Just one Question what was for Supper ? The 9.9/15 Big secret did have one last secret the head gasket. But I do remember you checking compression on it .. The looks of gasket kinda seems like maybe whoever had it before might have had head off and when they put it back on it wasn’t quite lined up and they push the bolt through and it cracked it then the water just started to slowly eat gasket away. But look at the 9.9/15 now She running like just came off the shelf. It should last another 35 years Sounds good and seems to have good response time . Those speeds are just right for it . The Good Enough looks good on the water . Great drone footage. 👍👍👍👍👍Only thing missed seeing Ol Glory 🇺🇸at the beginning.. As always Sir thanks for the ride along and Keep’em coming.
Spaghetti with garlic toast, thanks for all the compliments, I did screw up the into for sure. thanks for watching
@@Michaelsbackyardmarina 😄 👍 Thats what we had tonight for supper.
Boat works, engine works, I'm calling it progress, good job. You ever catch something decent, put em on film.
I will have to do that, got some new tackle to try out soon, Thanks for watching
For the longest time I wasn't sure why my 15hp Evinrude was hard to start after it was tilted up. My 30hp Evinrude showed me why. Fuel runs out of the carb when tilted way up. The 15hp has an airbox that catches the fuel and then dumps it all back into the carb when lowered back down flooding itself. The 30hp has no airbox so no problem starting it but wat a mess.
ALWAYS CHECK YOUR GROUNDS !!!!!!
MORE ELECTRICAL PROBLEMS are miss diagnosised due to bad grounds !!!
Clean ground connectors with small had file and clean the ground surface also
I usually try to clean up most connections, I really don't like electrical issues. Thanks for watching
spray the cylinders with superzilla and it frees the rings up.,, make sure piston is in up position. let it sit overnight, then do the other one.,.,
40hp johnson tiller get the same mpg 6 go 29 on 1985 16ft bass tracker got 15hp johnson as kicker👍
sounds like a nice set up. thanks for watching and sharing
A 15 is a 9.9 with a large venturi carb AND the REED stops set higher to allow for more fuel to enter. !
Use to be an inspector for APBA ( AMERICAN POWER BOAT ASSO. ).
the J ( BEGINNER CLASS RACE ENGINE ) IS A 15 HP WITH A 1/2 " RESTRICTER PLATE that makes a 15 a 6 hp.
Then when age limit is no longer an issue you take the restricter plate out and you have a 15 hp engine for the A stock class hydro or runabout class. 250 cc class in the alki world of boat racing.
10 cu in to 15cu in
Very interesting. Thanks for watching
I seem to recall you compression tested both cylinders at 95 pounds in the first video. The horsepower fairies must have been at work while you're out of the shop! 👍 😃
I had to go back and watch my first video on this to confirm, thanks for watchign
What a difference another cylinder makes
it's almost twice as good not LOL, thanks for watching
Who would thought the head gasket would go like that. Perverse can pay off. Great job on the 9.9/15.
How is the 50 and 20 ho motors coming along?
Thanks
Tim
video coming out soon on the 20, got some things sorted out, still have one obstacle to overcome. Getting back on the 50 soon. Thanks for watching
Just a fyi. The OMC manual calls for gasket sealing compound on the head gasket
Yes it does and no I didn't use it. As you saw in this video the failure was the metal part plus the fiber part. Thanks for watching
What do you think about, is Jenson more fortified and more rapid or Yamaha 9.9
Do you sell used parts for a 1978 evinrude 35hp 35853R?
what diretion do you put the drill when trying to start the motor
right hand rotation or clockwise looking from top down. Thanks for watching
Which boat are you testing the 15 on. I see the Bimini and am considering buying. Any place I can see a pic of that boat with Bimini up?
It's "The Good Enough" Jon boat, here is a link to a video on it. ruclips.net/video/4jfvn0CR0Zo/видео.html
You said in one of your videos that you put these engines on market after you rebuild them. Where is the market? I'm interested in getting one like a 20 or 25 HP preferably a johnson
Email is in the description. Got a 25hp that will be done in about a week. All that is left is water testing.
Hello , do they make earmuffs for that size motor.?😮
yes, I like the round ones, here is a link to it amzn.to/46kvmYx
Did you put the original cdi back on? Or keep for parts?
I'm keeping it for parts, I don't mind having a spare part or two. Thanks for watching
would be curious to know what the compression was after replacing the head gasket. also you will son learn that the old mercs are not worth fooling with,, weak lower units, parts hard to get, changes every few years.,.. yes they were the fastest motors, but just not built to last like the johnny rudes..
No gasket goop? Should put the thin red goop on it .
I could have I suppose, thanks for watching
To me it very clear ! The guy who sold her to you,had it,patched up with head gasket sealant ! As you test run the motor, you "burned out" the sealant and the real problem showed it's ugly face !