ss18 spitting oil

1114 Views 10 Replies 5 Participants Last post by olcowhand, Jul 26, 2009

pipejob

Discussion Starter · Jul 25, 2009

im looking for some help.i just got a ss 18 125 compresion in each cylinder and runs good.problem is the crankcase is building pressure and spitting oil out the breather.any help would bee appreciated. i also have a ss16 it runs perfect.thanks.

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Small Fry

· #2 · Jul 25, 2009

:MTF_wel2:
Oil pump pressure relief stuck ? I never had the problem but have heard of it happening.

Maybe someone else will know more.

I'm guessing it's not over full of oil ?

You could also try the "small engine" forum here on mtf. Just put "Onan spitting oil" or something like that. Lot of tractors had Onans don't have to be a craftsman owner. :goodl:

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pipejob

Discussion Starter · #3 · Jul 25, 2009

no not over full.ill look into that.thank you

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TOMMY

· #4 · Jul 25, 2009

Welcome to the forum Pipejob,

TOMMY

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pipejob

Discussion Starter · #5 · Jul 25, 2009

thanks tommy. i looked in small engines but found nothing.i guess ill tear it apart and look at the pump.

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TOMMY

· #6 · Jul 25, 2009

I think Small Fry meant to post your problem in the small engine catagory,probably get more response.

Tommy

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Small Fry

· #7 · Jul 25, 2009

TOMMY said:
I think Small Fry meant to post your problem in the small engine catagory,probably get more response.

Tommy

Yeap that is what I ment.. thanks Tommy

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pipejob

Discussion Starter · #8 · Jul 25, 2009

lol.ok ill do that.

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Jesse94

· #9 · Jul 26, 2009

my st-16 spits oil when its overfull. Thats how i nearly burned it to the ground a couple days ago

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pipejob

Discussion Starter · #10 · Jul 26, 2009

well i did a complete tear down today found nothing out of the ordinary deglazed the cylinders.cleaned it put back together.fresh #30 oil.same thing.the only thing i can think of now is a week sprin on the reed valve on the breather side.

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olcowhand

· #11 · Jul 26, 2009

A bad seal on the dipstick can cause problems like that, or any leak allowing air in, such as a bad crankcase breather assembly as you mentioned.

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