question Johnson 35 seahorse 1959

[jhromeli]

Hi every one I am from Mexico and , I am New in the boating thing, about 12 years ago a neighbor of mine almost give me for free one duracraft 1959 17 Feet boat and a Johnson 35 hp super seahorse 1959 , I love mechanics so 12 years ago I start working on it , but I had plans to marry and buy a house, etc, etc, etc, so I stop the project at that time, right now I have two little boys (3 and 5 year) the ask me a lot about the old boat, so a month ago I start working on the motor for them (They are very happy) , so far this what I have done:
1)Change set points and condenser, (set to 0.20 In.)
2)Check all electrical system
3)Check all ignition system (Coils primary and secondary ) Working fine Already check resistance
4)Flywheel install (105 Ft- Lbs) torque
5)I already start the motor it work fine , the guy who sell it to me told me it have an oil leakage, 12 years ago if found the leakage it was a defective head gasket , wet sparks , I change the head gasket and head, and I thing is ok, not very sure about
6)The water in the tank where I tested the motor is a oily messy???? , some advise? , the sparks plugs look a little wet right now???, should be a problem?
7)Some smoke coming out I start the engine whit 1:32 relation oil because I want to be oily inside because the time it have been stop the motor.
8)Water is coming out of the pee hole , at the beginning nothing, after is getting hot more water is coming (stat is working) and the temp sensor resistance open, so it is not hot the head , you can touch it for some seconds and if you put water in the outside of the head and is not boiling.
9)The motor works for about 7 minutes then stops, I need to pump in the bulb again and in the carburetor sounds like filling the reservoir , starts again and then stops at 7 minutes,
10)I check the pump , I disconnect the fuel line pump to carburetor and start the motor and I found a good flow of gasoline (not check the pressure already, but I put my finger and pushed gas out in a little stream, the manual said 1 psi at low 2.5 at high . (any advice), I think the float in the carburetor could be stock , but if this is right I should not be able to push gas from the bulb (Is my thinking right), I don?t want to take a part anything before being very sure, because is and old motor and I think in Mexico will be difficult to buy parts.
11)Thanks a lot, any advice

 

[CATransplant]

Re: question Johnson 35 seahorse 1959

Welcome! Let me see if I can answer some of your questions:

6. You can expect the water in the tank to be oily. I had an outboard just like yours and that was the case.

7. The correct fuel to oil ratio for that engine is 24:1, not 32:1. It will smoke. They all smoke. There is more smoke when you are running in a tank.

8. It sounds like your engine is getting enough water, from your test with the hand.

9. If it runs for 7 minutes then stops, and then you must pump the bulb, there is a restriction or an air leak somewhere in the fuel system. The fuel pump may also be weak, but you say it pumps. The carburetor may be dirty, as well. Also, the vent on the fuel tank may be closed or dirty.

Where are you in Mexico? If you are in a city near the water, there will probably be a Johnson/Evinrude dealer, who should have those parts. If not, perhaps you have a friend in the USA who can send them to you. We can help you with part numbers.

Buena suerte...

 

[samo_ott]

Re: question Johnson 35 seahorse 1959

Welcome is right

What i would try is at 7 minutes when it stops is unhook the hose from the fuel pump and see if anything comes out when turning over. It sounds like there will be nothing and if so it's a fuel pump problem.

Or if you keep pumping at 6 minutes, will it keep running?

Both point to a weak fuel pump.

And yes, the barrel will look real gross with oil unfortunately. It's a 2 stroke and thats the way it is. I have a '57 35 and a '60 40hp which are basically the same engine.

 

[tashasdaddy]

Re: question Johnson 35 seahorse 1959

Iboats.com marine store now ships worldwide, so you can order parts from them. here are carb adjustments http://forums.iboats.com/showthread.php?t=167352

 

[jhromeli]

Re: question Johnson 35 seahorse 1959

Thanks every one , I already took the head off , and a I will try to find the head gasket in Mexico (I found some water in the lowest spark plug) just a little but when I saw the oily messy in the tank I thought something is not right , I should it wait until your reply probably it wasn?t need it to replace the head gasket, anyway I am already in the track to fix the engine , my sons are very happy to see the old motor is running. About the fuel system i think the pump is working because i saw pressure , what I think happens is that the tank was very low in gas and probably the vent closed, I will wait until i Fix the head problem. Do you ever see a head gasket made only of silicon, (it will work?)

The head gasket is a hard to find? , the dealer in mexico told me that is a very old motor and doesnt worth the job to keep it running , i dont think taht way i like old engines, i have a colection of old things my wife said is a sicknes , but i am very happy fixing things (I have a vw thing 1960 a old trans Am 1979 and a Jeep 1981),
This is a great forum

Thanks a lot

 

[jbjennings]

Re: question Johnson 35 seahorse 1959

Welcome from me too, sir!
I think if someone gives you the part number so the lazy dealer doesn't have to look it up he will probably order it for you. I also like old stuff but like old GOOD stuff. Old OMC motors are GOOD stuff! I'd give you the head gasket part number but I don't have a parts manual for it. Somebody on the forum will, though. Wait until they check in and show that part number to the dealer and say PRETTY PLEASE and he'll probably "find a way" to order it for you. By the way, I have that same Sickness that you have....
Good luck,
JBJ

 

[F_R]

Re: question Johnson 35 seahorse 1959

The part number is 305206 and is listed as no longer available from OMC/BRP. Sierra Marine does not have one either. Looks like Laings or Sea-Way on this one.

 

[jhromeli]

Re: question Johnson 35 seahorse 1959

Hi again , I already change the head gasket , and run it again the motor , I observe a little damp or wet in the bottom spark plug I think is because I have a very reach mixture in the carburetor I need your advise, I correct the mixture of the oil and gas is 1:24 , I put a new spark plug (Autolite 303) the dealer said is the equivalent for champion J6C.
I have a video of the motor working if anyone wants to see it I can sen it to you by email to know your point of view.

Thanks a lot for your comments.

 

[jhromeli]

Re: question Johnson 35 seahorse 1959

Hi every one I need your help I am kind of tired , I check the spark on the spark plugs and I didn?t have a spark in the bottom cylinder (The one it was damp or Wet), so I take the flywheel off and check the condenser, points and coils everything ok ( points and condenser are new), I check the resistance on the primary circuit in the coil 1.2 Ohms , result ?ok? , I check the resistance on the secondary circuit coil to spark ?7.2 kOhm? , result ok , so I put back the flywheel , torque to 110 Lsb-Ft , start the motor without spark plus and test for spark , I saw a very good spark on both cylinders, then I try again and I saw an intermittent spark in the top cylinder , The it happens the same in the bottom cylinder then I touched the spark plug cable and discharge me , (Do you thing I have a faulty cable?)
Can I make new cables out of an automobile cables, Thanks for your advise

 

[78whiteorbs]

Re: question Johnson 35 seahorse 1959

was reading this thread and am curious if you ever found your solution? Up to the point I read you were having a spark problem. I have the same engine and am about to be restoring it. From what I have read about old Johnson outboards of that era, at minimal you should replace the plug wires and cap as they get brittle and are cheap to replace. Has to be a copper or metal core plug wire though not graphite like you find in most auto stores nowadays. Easy enough to install . that's my 2 cents. Curious to know how this turns out , By the way as stated earlier that dirty water is to be expected. it is a very old motor and like old harley's all of them leak a little oil somewhere.