Seafoaming my Johnson - advice? | Page 4 | TigerDroppings.com
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jorconalx
LSU Fan
alexandria
Member since Aug 2011
3824 posts

re: Seafoaming my Johnson - advice?

quote:

do you also Wax your Johnson too


only if you want the shaft of your Johnson to appear longer than it actually is


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JAB528
LSU Fan
The Mexican Ocean
Member since Jun 2012
15071 posts

re: Seafoaming my Johnson - advice?
It should be near your master cylinder.


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RogerTheShrubber
LSU Fan
Juneau, AK
Member since Jan 2009
99894 posts

re: Seafoaming my Johnson - advice?
quote:

Seafoaming my Johnson -


Really surprised this thread stayed on topic as much as it did.


AlxTgr
LSU Fan
Kyre Banorg
Member since Oct 2003
39018 posts

re: Seafoaming my Johnson - advice?
quote:

Really surprised this thread stayed on topic as much as it did.


fishfighter
LSU Fan
Baton Rouge
Member since Apr 2008
20879 posts

re: Seafoaming my Johnson - advice?
Here you go OP.

Two strokes build up a lot of carbon internally and need to be de-carbonized by doing a "shock treatment" with a detergent like Seafoam.
I like to do the shock treatment once a year on my C115 - in late winter when I am going thru my list of "spring make-ready".
If you use a detergent like Yamaha Ring Free or SeaFoam all the time in your fuel tank, then the carbon buildup is not as bad. Still, a lot of 2-stroke owners will de-carbonize once a year - you will get various opinions on this.
I "shock-treat" my C115 by running the following mixture thru it. This will smoke up the area pretty good, and leave a lot of carbon on the drive way:
16 oz can Seafoam
3/4 gal gas
3 oz oil (2 if oil injected)
Disconnect the fuel line at the input to the bulb and attach a three foot piece of fuel line to the bulb. Mix the above in a small container -
I use an empty 5 quart oil jug. Set the container on the deck of your boat and insert the fuel line and secure to make sure the end stays on the bottom of the container. Pump up bulb and start outboard with earmuffs and water hose, of course -run a little above idle for 15 minutes and turn off. Let sit for 15 minutes. Run again for 15 minutes. Let sit 15 minutes. Repeat until all mixture is consumed. Reattach main tank hose to bulb and run regular fuel/mixture thru motor for 10 minutes - you want to get the concentrated detergent out of the fuel system.
Make sure you do this were you willing to kill off the grass. Never do it in the driveway. A lot of crap will come out.


DonChowder
LSU Fan
Sonoma County
Member since Dec 2012
5982 posts

re: Seafoaming my Johnson - advice?
quote:

fishfighter
Why you gotta get all serious on us?


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AlxTgr
LSU Fan
Kyre Banorg
Member since Oct 2003
39018 posts

re: Seafoaming my Johnson - advice?
quote:

2 if oil injected
Why?


RogerTheShrubber
LSU Fan
Juneau, AK
Member since Jan 2009
99894 posts

re: Seafoaming my Johnson - advice?
quote:

Make sure you do this were you willing to kill off the grass. Never do it in the driveway. A lot of crap will come out.



Was this on topic or off topic? It could go either way.


jorconalx
LSU Fan
alexandria
Member since Aug 2011
3824 posts

re: Seafoaming my Johnson - advice?
quote:

Was this on topic or off topic? It could go either way


think it depends on what he means by crap


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fishfighter
LSU Fan
Baton Rouge
Member since Apr 2008
20879 posts

re: Seafoaming my Johnson - advice?
quote:

2 if oil injectedWhy?


By running the motor and if you are using a oil injection, you are just about doubling the oil. Seafoam is very HOT.


So, extra oil will keep things lubed up for the long ride. Older the Johnson, the more lube one needs.


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hunt66
LSU Fan
Member since Aug 2011
1233 posts

re: Seafoaming my Johnson - advice?
quote:

Johnsons don't normally have those problems until their 4th or 5th decade. Is there a possibility the flow to the Johnson is restricted due to sugar or thick grease deposits in the lines? Maybe the pump is producing too much pressure damaging the lines? I know some guys will add nitrous to the fuel but that shite is dangerous and can blow up an engine with compression problems. You could have an extra bulb installed and manually pump the fuel to get things started just make sure to back off the pressure when you are done running the Johnson.


Wait - are we still talking about boat motors?


fishfighter
LSU Fan
Baton Rouge
Member since Apr 2008
20879 posts

re: Seafoaming my Johnson - advice?
quote:

Wait - are we still talking about boat motors?


More so on old Johnsons. I have a 1958. Still runs like new. Just now and then it wants to spit.


AlxTgr
LSU Fan
Kyre Banorg
Member since Oct 2003
39018 posts

re: Seafoaming my Johnson - advice?
Can you run it multiple time in a short period, or does it need time to recover?


hogdaddy
LSU Fan
harvey
Member since Feb 2010
3639 posts

re: Seafoaming my Johnson - advice?
I love hanging my old Johnson(1946 5 horse) off my wooden skiff.


Chad504boy
New Orleans Saints Fan
Five Oh Four
Member since Feb 2005
87084 posts

re: Seafoaming my Johnson - advice?
quote:

Can you run it multiple time in a short period, or does it need time to recover?


I find that depends upon the number of passengers boarded. My johnson needs less recovery time if i have multiple people on board.


JAB528
LSU Fan
The Mexican Ocean
Member since Jun 2012
15071 posts

re: Seafoaming my Johnson - advice?
My Johnson smells weird after use.


jorconalx
LSU Fan
alexandria
Member since Aug 2011
3824 posts

re: Seafoaming my Johnson - advice?
quote:

I love hanging my old Johnson(1946 5 horse) off my wooden skiff


by wooden skiff you mean splints right?


Chad504boy
New Orleans Saints Fan
Five Oh Four
Member since Feb 2005
87084 posts

re: Seafoaming my Johnson - advice?
quote:

My Johnson smells weird after use.


like burning rubber smell?


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Chad504boy
New Orleans Saints Fan
Five Oh Four
Member since Feb 2005
87084 posts

re: Seafoaming my Johnson - advice?
quote:



by wooden skiff you mean splints right?



and by 5 horse you mean 4.75 horses amirite?


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fishfighter
LSU Fan
Baton Rouge
Member since Apr 2008
20879 posts

re: Seafoaming my Johnson - advice?
quote:

Can you run it multiple time in a short period, or does it need time to recover?



These days, for me, sometimes. BUT, I can keep my Johnson running a very long time. You know the old saying, they just don't build them like they used to. :nana: :nana:

All those new 4 stroke johnsons way to heavy and don't have a strong shaft in them.


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