Water or ? In oil? P216g

[Cee245 818]

Doesn't look normal to me. It is 10w30. What needs done besides changing?

[953 nut 55,285]

First you need to figure out how the water got in and make sure that never occurs again, then change the oil.

[SylvanLakeWH 25,596]

I'm guessing condensation... Super cold...

 

[Cee245 818]

I was thinking condensation because of the extreme cold? 

 

I don't know where it else could enter besides the fuel. (If there was water in the fuel) 

Even if there was water in the fuel( possible) would it cause this? 

 

I have a missing clear part of the fuel guage style cap. ( new one is coming soon) water could enter and has, but I've drained the fuel tank and use ethanol free always. It has been running so so lately.

[Chaz54 57]

It wouldn’t be from the fuel, but my guess would be due to condensation. Where do you store it? I see the same thing in the motor in my whole house generator. It does a 10 minute exercise every week, but really needs to run longer to get warm enough to evaporate the condensation in the motor.

[Cee245 818]

I store it in a unheated shed. 

Thanks everyone.  I'll change it and keep a close eye.  I haven't run it for more than 10 min for the last 5 times running it I'd guess. 

[lynnmor 7,307]

29 minutes ago, Cee245 said:

 I haven't run it for more than 10 min for the last 5 times running it I'd guess. 

 

Might very well be part of the problem.  If you are going to start an engine, especially in cold weather, run it till it is fully warm and then run it some more.  Some air cooled engines won't get warm enough unless they are being worked, so find some work for it.

[Chaz54 57]

What you need to do now is start it up and let it run for a while, change the oil, run it for a while again, and then change the oil and filter.

[Ed Kennell 38,200]

1 hour ago, Cee245 said:

I haven't run it for more than 10 min for the last 5 times

 

37 minutes ago, lynnmor said:

Might very well be part of the problem

My 312H had some of that milk on the stick.     I had been using it for the 10 minute ride to my deer stand....4 trips /day.      Not enough time to get it hot enough to drive off the moisture.

I agree with Lynn, Cory.           Probably best not to start them unless you can really heat them up.    Might be best to pull the plug wire off and just crank them over a few times to splash the oil around.    I do this with my winterized outboards every few weeks.

[gwest_ca-(File Mod) 11,046]

Make sure the crankcase breather is working. It should allow air out but none in.

[peter lena 8,632]

@Cee245  think your short runs is the condensation issue , oil never gets hot enough , personal  experience  with  any cold weather  oil  issues . is going over to a 5-30  synthetic oil , it gets hotter sooner and changes over quicker / easier .  have it in my  3 kohler magnums  , also added zink , no smoke no condensation  or issues ,  pete

[Cee245 818]

I think we are right with condensation. 

 

I decided to dive in a bit more after changing the oil.

 

I took apart the crankcase breather and there was some moisture in there as well. Cleaned all that up even though it looked great.  

 

Next up is continuing to mess with the carb or more precise, changing out an early Nikki for the original which is being rebuilt and currently in the ultra sonic cleaner for several cycles.

(feel free to post your concoction that works!)

 

On the early model Nikki, it would cut out a bit when going from forward reverse briefly. I changed to this one when the original needed cleaned at the end of summer, so I guess it's back to original.  

 

Edited December 27, 2022 by Cee245
Clarification

[Cee245 818]

Well, that didn't work out how I thought, but I'm back in business. 

 

I ended up unsuccessfully putting the original back on and clearly missed something (didnt mess with accelerator pump) or it's just worn out( heavy wear/ pitting/ on it, see pic)

It would barely run it at all... and it seems like there is a coating being washed off or something from ultrasonic cleaner) all I know is it doesn't look good...

 

I opened up my early Nikki and seen why it was sputtering.  Looked like the float was stuck on a tiny burr on the main jet (the one under the 3/4" bolt, that has 120 on it)

 

Removed burr, Cleaned it with some Gumout and it purrs again. 

 

Typical fix for me where when I have all the information,  it makes sense why it wasn't wanting to run right.  

As always, it's a good feeling to figure it out

 

 

Edited January 1, 2023 by Cee245
Pic