1977 Johnson 9.9 lower unit oil leaking out prop.

[catbuster]

Greetings! This is my first post, so be easy on me. I recently acquired this jewel. In great shape, but no pee out the peehole! I feel water in the jacket so head is getting cooled. I replaced impeller, still no water, but noticed lower unit oil coming out prop. Done all testing in muffs so far. What next?

 

[kbait]

Re: 1977 Johnson 9.9 lower unit oil leaking out prop.

Lower unit oil, if coming from center of prop, is likely unburned fuel/oil/gunky crud. If you can, run it in a garbage pail w/the waterpump covered in water. Water will get cruddy on top after a bit from unburned gunk. Then check gearcase lube for water to be sure.

Check water hose and end from the block to the indicator. A wire through the end can clear passage usually..

 

[mchin]

Re: 1977 Johnson 9.9 lower unit oil leaking out prop.

Before running again, I would try to figure out whats up with the pee hole, even thought it seems to be cooling. Did you see the sticky on starting up an old motor, that would be helpful.

also this web page has a ton of info on the 9.9-15 omcs like yours.
http://www.sschapterpsa.com/ramblings/Johnson%209.9_15.htm

It seems your motor is running fine, the only other thing might be to run some sea foam through her to clean her out. The oil coming out of the prop is most likely old oil and crap getting blown out of the exhaust. Lower unit oil typically leaks from the prop shaft and then down the skeg, may be white and milky in color and may also smell bad. Did you replace the lower unit oil? if not, I would get some good hypoid LU oil and filler up.

 

[mikesea]

Re: 1977 Johnson 9.9 lower unit oil leaking out prop.

agree with the oil problem,follow the small hose to wher it connects to the engine and remove it,squirt hosewater thru the pee tube,if its clear,then get a small wire and try to clean out the port the hose connects to.you can also try shooting a gardn hose into the pee hose to reverse flush

 

[mchin]

Re: 1977 Johnson 9.9 lower unit oil leaking out prop.

Here's a tip - literally. Go to the toy store, dollar store, walmart, buy a pack of water balloons, inside the pack (check before buying) there will be a water balloon hose attachment. This is the perfect size to fit in the water tube and even many of the pee holes. Try the long wire and flush, check you themostat and sorry to tell you, but you may have to remove the head if all other options fail. I've had the same problem and found a silt collection in the heads. Here in jax, the bottoms are soft sand and a lot of that gets sucked into the motor.

 

[catbuster]

Re: 1977 Johnson 9.9 lower unit oil leaking out prop.

Thanks guys! Sorry so long to reply. I have pee-hole working now after running metal hanger through it. I still have milky oil coming out the hub. I replaced the 2 outer-most seals on the prop shaft as well as the o-ring on hub. took it out and ran like a champ for an hour or two, but on second trip it would not get to full throttle. Acts like it wants to, but seems bogged down and oil is still coming from hub. Hub turns freely in neutral. Any ideas?

 

[torbjorn]

Re: 1977 Johnson 9.9 lower unit oil leaking out prop.

Thanks guys! Sorry so long to reply. I have pee-hole working now after running metal hanger through it. I still have milky oil coming out the hub. I replaced the 2 outer-most seals on the prop shaft as well as the o-ring on hub. took it out and ran like a champ for an hour or two, but on second trip it would not get to full throttle. Acts like it wants to, but seems bogged down and oil is still coming from hub. Hub turns freely in neutral. Any ideas?

Sounds like a two different problems. Can you see where the milky oil's coming out? From the seals along the propshaft? If not, where? You can take off the prop and run with a flush attachment if in doubt.

Are you certain that you installed the 2 seals in the right directions: lip of inner seal points toward gears, lip of outer one toward prop. Did you use 1000 Sealer (or 3M car trim sealer) on the new o-ring?

Water can also enter via worn out seals beneath the waterpump.

 

[bktheking]

Re: 1977 Johnson 9.9 lower unit oil leaking out prop.

Check the condition of the plugs and post back, sounds like it's out a cylinder. Is the oil running out black or kinda light brown. A black plug and new looking plug is water/steam washed.

 

[catbuster]

Re: 1977 Johnson 9.9 lower unit oil leaking out prop.

Ok. It seems that the oil i was seeing after the seal change was left in the hub. I washed it out and the leak is no more! BUT- it seems i'm only running on the lower cylinder. Pulled the top plug and it was fouled, replaced it with a new one and ran it for 20 minutes, pulled it and found no oil/fuel mixture on it. Looked just like new.Pulled the top plug wire at full throttle and it ran no different. PS- when i pulled the lower plug while at full throttle-it lit me up like the 4th of July! YOUCH!

 

[bktheking]

Re: 1977 Johnson 9.9 lower unit oil leaking out prop.

Not with insulated pliers it won't. Anyways, have you confirmed you are getting spark on the top cylinder or is it dead?

 

[Happyfingers]

Re: 1977 Johnson 9.9 lower unit oil leaking out prop.

lol

sorry

lol

**** meself laughing

 

[bktheking]

Re: 1977 Johnson 9.9 lower unit oil leaking out prop.

Happyfingers, is that how you got your nickname, pulling off plug wires with them happyfingers

 

[Happyfingers]

Re: 1977 Johnson 9.9 lower unit oil leaking out prop.

i think i laughed because i have done that before

and yes it hurts

id like to say the ladies named me but alas it came more from annoying people on internet forums

 

[catbuster]

Re: 1977 Johnson 9.9 lower unit oil leaking out prop.

Stupid question= How do I check to see if it is getting spark? Will pulling plug then holding it to the head for ground while turning engine over work or am i looking for something else. PS- you guys stick around and i'll surely give you some more laughs! No worries- ignorance is sometimes comical!!!!!!!!!

 

[bktheking]

Re: 1977 Johnson 9.9 lower unit oil leaking out prop.

Yes that is one way to do it in a jam, or they sell spark checkers for $5 or so at auto parts stores.

 

[catbuster]

Re: 1977 Johnson 9.9 lower unit oil leaking out prop.

I bought the spark tester and am getting no spark to the top cylinder. noticed some fuel leaking from carb-not sure where. I have the rebuild kit, but don't want to dive into that before I get this spark issue resolved. What is next? Thanks so much for all your help. This website is incredible!

 

[bktheking]

Re: 1977 Johnson 9.9 lower unit oil leaking out prop.

Start by swapping coils, typically when the powerpack goes neither plug fires.

 

[catbuster]

Re: 1977 Johnson 9.9 lower unit oil leaking out prop.

I need a beer! I'm thoroughly confused now. Swapped coils and could not get spark to either plug. Swapped them back and still the same- no spark to the top plug. Looked at all wiring in that area and saw no rubbing or cracking and the grounds are rock solid. Can I test to see if the top coil is getting juice or is it definitely a power pack issue?

 

[bktheking]

Re: 1977 Johnson 9.9 lower unit oil leaking out prop.

So it's probably a combo issue, bad coil and possiblbly a bad pack. If the one suspect coil swapped to the bottom cylinder and still doesn't fire it's a bad coil, PP could have fried the coil. Check your wiring as well, unplug your harnesses going to the powerpack, you might find corrosion.

 

[catbuster]

Re: 1977 Johnson 9.9 lower unit oil leaking out prop.

Ok. ordered new pp & coil from iboats this am. Any suggestion on which to install first? I would like to know if either the coil or pp works so I have a spare, but I don't want to take the chance of frying the new coil if it is the pp. Do you use die-electric grease on your connections?