[AT] Kohler engine update - still having trouble

[Steve Offiler]

Yup.  I've had two or three different Briggs with this problem.  It explains the raw fuel in the crankcase - fuel pump is a pulse-type and torn diaphragm opens fuel tank straight to crankcase.  

SO

Sent from my iPhone

> On Jul 28, 2015, at 6:52 PM, <rlgoss at twc.com> wrote:
> 
> Blown diaphragm in the fuel pump.  It sets on top of one of the rocker arms.
> 
> 
> Larry
> --- Mike <meulenms at gmx.com> wrote: 
>> Several days ago, while mowing with my Simplicity Sovereign, Kohler 
>> CH18S) I completely blew out the front oil seal. Today, I replaced the 
>> seal, cleaned the carb, and put the crankcase vent tube back where it 
>> belongs. I figured since the tube had been exposed that I would change 
>> the oil and filter as well. When I drained the oil, I noticed it was 
>> very thin,  so I stuck a finger in the stream, and sure enough it was 
>> raw fuel. I put everything back together,and it started right up. I made 
>> two passes around the yard, and it was smoking so I check and it was 
>> already pushing oil past the seal. For some reason I am creating too 
>> much crankcase pressure. I pulled the crankcase vent tube and check for 
>> any obstructions, I found none. Any ideas what to check for? If I keep 
>> running it, it will just blow another seal. Thanks in advance.
>> 
>> Mike M
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