Oil spitting out from pee hole.

[TheHungryFisher]

I have a Johnson 5.5 CD-18, I believe it's a 1961. I tried 50:1 fuel mixture and I have oil spitting out of the pee hole and smokes a lot. I am using a trash can with water in it for testing and tried tuning the carburetor and can't get it to run right. I believe the mix is supposed to be 24:1, but wouldn't that make it worse or no? Also the water is spitting out and not a stream.

 

[racerone]

If you just bought this motor you need to install a new impeller.------Powerhead must be lifted off to disconnect the shift rod to do this.-----Yes this motor has needle bearings on the con rod like models that run at 50:1.-----Post the compression test values here.----Original head gaskets were weak.----Replacements are improved with a metal ring.------If coils are original they will be cracked.-----Remove recoil .---Remove inspection cover and inspect coils through hole in flywheel.

 

[flyingscott]

You should have oil coming out the hole on those. That hole is also the exhaust relief.

 

[TheHungryFisher]

I have about 62 compression on both cylinders.

 

[racerone]

If it has the original head gasket , I would remove cylinder head.-----The head will be warped and gasket may be leaking between cylinders.----Resurface the head and install a new gasket.

 

[TheHungryFisher]

I took the head and gasket off. sprayed it with cleaner then put it back together and now I get 75 compression on both cylinders.

 

[fitz73222]

You're going to stay hungry with those repair practices. No sense in adding another bit of grey matter to this post.

 

[TheHungryFisher]

If it has the original head gasket , I would remove cylinder head.-----The head will be warped and gasket may be leaking between cylinders.----Resurface the head and install a new gasket.

Who would I take the head to to get resurfaced?

 

[racerone]

Piece of emery cloth on glass plate.----Do it on the kitchen table.

 

[TheHungryFisher]

I cleaned it up a bit and sanded the head. What is the compression supposed to be?

 

[TheHungryFisher]

What is the best way to clean the thermostat?

 

[racerone]

Any close-up pictures of cylinder walls with piston at bottom of stroke ?-----I soak those thermostats in vinegar for a day.

 

[TheHungryFisher]

I will get some.

How do you get photos to post? I had to email them to my laptop then reformat them.

 

[racerone]

I do not know how to post pictures.----Reluctant to learn new technology too.

 

[TheHungryFisher]

Any close-up pictures of cylinder walls with piston at bottom of stroke ?-----I soak those thermostats in vinegar for a day.

 

[racerone]

??----Details of cylinder walls are not shown in your pictures.

 

[TheHungryFisher]

 

[TheHungryFisher]

The cylinder wall look and feel smooth.

 

[racerone]

The motor should run.

 

[TheHungryFisher]

Which direction does the impeller go?

 

[racerone]

Same direction as the motor turns.----Counterclock wise if you put impeller in housing first.-----Turn driveshaft clockwise if you put impeller on driveshaft first.

 

[TheHungryFisher]

Coils don't look so good but the points do. Should I change everything? It still runs like that.

 

[racerone]

That is classic example of old coils.----They are scrap.----This means that motor was sitting around for perhaps 20 years or more.-----Every one of these motor has or will suffer this condition.-----Condensers and points are not original and may be OK.

 

[TheHungryFisher]

What spark plug does it take and what is the gap?

 

[TheHungryFisher]

I changed the head gasket and got less than 75. Could it be the rings?

 

[fitz73222]

First, I would never run a pre 1964 OMC on 50-1 oil ratio, my rule of thumb has always been, if it has an adjustable high speed jet, it's 24-1 on oil ratio. If its dumping oil out of the exhaust, it needs a tune up. Your cylinders look fine, rings may be stuck from 60 years of carbon, but compression is even so move on to a magento and carb rebuild plus a new water pump and gearlube. Total parts about $225 and she'll run perfect with guidance along they way. These were great engines, simple, reliable and with a liitle TLC you could give it to your grandchildren.

 

[racerone]

Parts for a 61 and 64 model might be the same.-------And a 1970 model 33 HP is shown with adjustable high spped needle.----So you would run that at 24:1 ratio?

 

[fitz73222]

For whatever reason, 1964 was the year for 50-1 on all of them. I stand corrected, you found the only big twin remaining that had an adjustable high speed jet in 1970. Actually the 1960 5.5 was still a bushing rod bearing engine and switched to needle bearing rods in 1961 but 50-1 was not recommended until 1964.

 

[racerone]

There was a kit available to put high speed needle on say a 1977 model 6 HP.-----Never mentioned to go to 24:1 if installed.

 

[fitz73222]

I'm talking about pre 1964, everything after that was 50-1 regardless of type of jet.