75 Johnson 4 Hp - Can it be Saved?

1975 Johnson 4Hp. She's Got Issues! Unavailable! Total Tear Down! Follow the Real Life Saga & SUBSCRIBE TODAY! You Never Know What's Gonna Happen Next! It's This Old Outboard. Resurrecting Old Outboard Motors.
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[@Kyle-bb9zp]

People got to start doing quality work. This mam does awesome quality work.

[@THISOLDOUTBOARD1]

Thank You!

[@11bayrat]

Really like investigating the motors.i keep learning a lot. Thanks!! Remember 😅You’re living my Dream!!

[@THISOLDOUTBOARD1]

Hey. Thanks for tuning in! Lately its been more of a nightmare! Hahaha Thanks again & Stay Tuned !

[@Kyle-bb9zp]

I like the way the recoil system works on this 4 horse power really cool

[@THISOLDOUTBOARD1]

Hey. Thanks for tuning in!

[@vandos11]

You are going deep on this one

[@THISOLDOUTBOARD1]

Hey. Thanks for tuning in. Oh, That's a loaded comment but I won't tell you what she said last night! Hahaha Thanks again !

[@mwatkins2464]

@@THISOLDOUTBOARD1😂😂😂

[@carpetgeniepsl]

I appreciate that you took the time to find the issues that the previous owner missed.

[@THISOLDOUTBOARD1]

Thanks for tuning in!

[@bobbell5928]

Great video. Anyone that needs to work on a small motor like this now has a lot of information

[@THISOLDOUTBOARD1]

Hey. Thanks for tuning in. Stay Tuned !

[@TheSteelworker]

What a mess! My old lady says I got a couple screws loose too! Someone butchered the hell out of the motor…good video 👍

[@THISOLDOUTBOARD1]

Hey. Thanks for tuning in. Yes Mess! Thanks !

[@VernonTate-y1i]

Looks like you opened up a can of worms on that little cutie been there done that before great job see you in the next one 👍🏻🤘🏻

[@THISOLDOUTBOARD1]

Hey. Thanks for tuning in. Too bad I cant use the worms for fishing! Stay tuned !

[@MrEmersombiguns2002]

Can't wait to see what your friend Cory says. May want to punt on this one it that center bearing area is bad.

[@THISOLDOUTBOARD1]

Hey. Thanks for tuning in. Yeah he'll make his money back and then some parting it out. These parts are flying off the shelves on ebay. Stay tuned !

[@victorremick9721]

Sometimes even a blind squirrel finds a nut. Glad you stuck with. Gtg

[@THISOLDOUTBOARD1]

Thanks again for tuning in!

[@wish2fish37]

Saw a video of your buddy kodibass hone an engine with the pistons still in it when he swapped out a head gasket.Good autopsy on that motor.

[@THISOLDOUTBOARD1]

Hey. Thanks again for tuning in. Funny I just got off the phone with him!

[@artstates960]

This one is interesting. They pulled the whole motor apart, but it didn't go back together right and you get all the problems! I think you need to cut your losses on this one.

[@THISOLDOUTBOARD1]

Hey. Thanks for tuning in. Yeah my guess is they tried it but unsuccessful! Leave it for the next guy! Hahaha!

[@Kyle-bb9zp]

Bring it back to life awesome little motor it says fix me please i want to run on a boat in the water. Because there is no more Evinrude and Johnson.

[@THISOLDOUTBOARD1]

Thanks again !

[@mwatkins2464]

This motor is turning you into a CSI agent 😂 someone did a number on that baby but with your wisdom it will run again 😊 good luck 👍

[@THISOLDOUTBOARD1]

Hey. Thanks for tuning in. Don't tell nobody but I'm gonna try! Hahaha Stay tuned !

[@mwatkins2464]

@@THISOLDOUTBOARD1 I can keep a secret for a little while 🤐

[@Dan_Akins]

Can you vacuum/pressure test the case with a mitt vac tool? Works great on chainsaw trouble shooting.

[@THISOLDOUTBOARD1]

Hey Dan. Thanks for tuning in. Well not now! Hahaha, no I don't have anyway to do that. I don't even know what a mitt vac tool is! Hahaha Thanks again & Stay tuned !

[@Dan_Akins]

@@THISOLDOUTBOARD1 mity vac, you can pressurize a crankcase and check for crank seal leaks, needle valve seating, lots of uses. Enjoy your show!

[@THISOLDOUTBOARD1]

@@Dan_Akins 👍oh mity vac thx!

[@jshall1000]

Outboard guru how would I get a tilt rod out on a 79 6 hp that's rust to u know where the nut stripped so in gonna cut the nut off but I know that tilt rod won't just come out. Any ideas or direct me to a vid u did on 1.

[@THISOLDOUTBOARD1]

Hey. There's a tilt rod and a tilt bolt. I think your talking about the tilt bolt. Yeah just cut it off, then all I can think of is to beat it out, use some wd-40 on it and get something about the same diameter and smack it. Be careful not to hit it too hard the brackets are made of pot-metal and could break/crack. You could cut off both ends and smack it back & forth to help loosen it up. Good luck and take your time it will come out!

[@jshall1000]

@THISOLDOUTBOARD1 thanks man. Yea it looks like a big carriage bolt I guess. Wish me luck lol and thank u love the vids

[@Kyle-bb9zp]

You are right sir that does look smaller good eye

[@THISOLDOUTBOARD1]

Thanks! C U in the next one!

[@Kyle-bb9zp]

@@THISOLDOUTBOARD1 love the sound that 4 horse makes

[@THISOLDOUTBOARD1]

@@Kyle-bb9zp me too!

[@dougaranda6187]

You can clean that crank with 2000 wet sandpaper and a little WD. I have a complete block with new rings and one new piston. They were hard to find, but EBay finally came through. The stock bore on those is 1.56 inches if you want to see if it’s out of spec. I think it might be because of how those piston’s basically fell out of the cylinders. Probably someone over-honed it and now the bore diameter is too large. I think another reason those things are hard to start is because they’re direct drive. When you pull the cord you’re turning everything, including the prop.

[@THISOLDOUTBOARD1]

Hey. Thanks for tuning in. Hey thanks for the info! Yeah if we go through with it I be taking that prop off next time it goes in the bucket. Thanks again & Stay Tuned !

[@dalitohana6979]

You need to check all those small tubes cast into the block to make sure their is no restrictions. I worked on the same type motor and they were restricted causing it to over heat, They are tiny and restrict easily. I thought about making them wider they seemed just to narrow. One goes across the top of motor from inside exhaust cover over to near the fuel pump then down and out bottom of engine area all those need to be open or it will overheat again. Looking at those screws on bottom of motor someone like you said has kept popping that motor off.. That red stuff maybe inside those holes for sure. Mine had small bits of sand in them.

[@THISOLDOUTBOARD1]

Hey. Thanks for tuning in. Yes no stone unturned! Thanks again & Stay Tuned !

[@jamesmichael3998]

I think there is supposed to be a seal on the top of the drive shaft that seals up the bottom of the crank case

[@THISOLDOUTBOARD1]

Hey. Thanks for tuning in. Yes they started doing that later. Crazy right! Thanks again & Stay tuned !

[@randykraigbrothers9519]

Polishing the crankshaft will help

[@THISOLDOUTBOARD1]

Hey Thanks for tuning in! Yes!

[@alberthafner2194]

The red valves and plate have to be installed to test that top seal.

[@alittlebitofanything6345]

I would think the cylinder head too to close the system that crank center journal is ?????????

[@alberthafner2194]

Top end compression has no effect on crankcase compression.

[@danielrobert7181]

As mentionned in the video, a leaking top crankcase seal would have left an oily ring in the bonnet so that problem is pretty well ruled out but the soapy water test needs pressure to be generated in the crankcase which in turn will create bubbles as air escapes around the leaking seal ... but no such pressure can be created if the intake's leaf valves do not block air going back out of the intake. Regards !

[@THISOLDOUTBOARD1]

Hey. Thanks for tuning in. I should have edited all that out but I had to goof on Captain Ron for giving me a hard time for not using soapy water. I guess nobody got it or maybe some did. Yes I know how it works. Anyway there wouldn't have been enough pressure to test it, not in the condition this thing is in.

[@THISOLDOUTBOARD1]

Hey. Thanks for tuning in. Yes, Just goofin on Captain Ron for giving me crap about not using soapy water. Kind of a "Happy Now" thing. Hahaha I guess you had to be there! Thanks again !

[@robertrabhudsonhornet5869]

On that crank I would use fine Emery paper and try to get some of the groves it's not going to hurt if you do a light honing on the cylinders then I would put it back to tether I would use a then amount of seller when you put the two hafs of the motor back tether just make sure it's clean good where two services and where the gaskets are so that way you know it will seal good. I have never had to check to see on a boat motor if the motor will hold a vacuum or pressure I have dune it on smell engines you have to make something to plug off where the exhaust / muffler is and one for the carburetor what I use piece of aluminum and drill holes where the carburetor would've been then I would use a small piece of rubber from a inner tube and a pipe plug for the where the muffler goes then I made from a old compression tester I cut the one end off and huck it to a hand pump or vacuum tester and the other end you put it in the spark plug hole so everything is sealed then I'd pump about 5 to 10 psi and let it sit for round half hour if you see no change on the gage then you know that the block and seals are good

[@THISOLDOUTBOARD1]

Hey. Thanks for tuning in. Yeah should cleanup! Too much work with all that other stuff! Hahaha Thanks again & Stay tuned !

[@melvinrawlings1457]

Take some wet sandpaper and fix that crankshaft right up. It def should help brother. Use some permatex on the crankcase when putting back together. I would believe that since it barely had anything on it that it wasn't creating the pressure u needed

[@t.j.h2810]

Mop on a little muriatic acid before polishing the crank with the emery cloth, the acid will eat away any aluminum (watch it do it's thing ) left from the bearing & block and leave a smoother crank for the cloth.

[@THISOLDOUTBOARD1]

Hey. Thanks for tuning in. Yes! I believe ! Thanks again !

[@melvinrawlings1457]

Yes sir def correct but I would def recommend doing so for sure

[@Kyle-bb9zp]

That crank might have to be cleaned up at a machine shop or maybe you can do it. Its savable motor.

[@THISOLDOUTBOARD1]

Hey. Thanks !

[@leesmith5419]

Ahhh saga

[@THISOLDOUTBOARD1]

Hey. Thanks for tuning in!

[@melvinrawlings1457]

Yea them top piston rings looks smaller

[@THISOLDOUTBOARD1]

Hey Thanks for Tuning in. They do! Or maybe like what randyyoung9892 said in his comment. Thanks again !

[@bobbyholmes3985]

You need a smoke machine. It will help you see or find bad seals and unsettled rings, bad gaskets extra.

[@THISOLDOUTBOARD1]

Hey! Thanks for tuning in. Yes! Thanks again & Stay Tuned !

[@randymiller1604]

The power head is no good it is leaking between the cylinders it has been run out of oil it will never run at an idle

[@THISOLDOUTBOARD1]

Hey. Thanks again for tuning in! Leaking between the cylinders. I No understand. Thanks again & Stay Tuned !

[@randymiller1604]

@@THISOLDOUTBOARD1 there is damage on the crankshaft between the two cylinders causing low vacuum true story

[@THISOLDOUTBOARD1]

@@randymiller1604 oh

[@randyyoung9892]

I think the lower seal is leaking and cleaning the piston and Ring the upper is dirty so the carbon shadow makes it look thinner 🤔 I'm typing this half through your video BTW 😅 probably got carried away with the red anaerobic sealer. Too much of that red crap will keep the lower mechanical seal from working properly I assume

[@THISOLDOUTBOARD1]

Hey. Yeah I was wondering that also. And there is no lower seal or bearing on this model. Crazy!

[@joenobles1086]

Hey check over at pelican marine center he carries a lot of old parts if you need the number let me know

[@THISOLDOUTBOARD1]

Hey. Thanks for tuning in. Ok I'll check. I need to see what Corey, the owner wants to do. Thanks again !