[tmdools]

What causes oil to end up in the air filer? I looked in to it slightly and found the breather mesh kinda squashed down but there's gotta be more to it than that. New to me machine with 2k hours on it starts ok but the oil in the filter is affecting the idle because I have to play with the choke to keep it from stalling . Any help is appreciated !! Thx!

 

[dave_thompson]

Tim that is blow by from worn piston rings. Dave

 

[whstubb]

Right on Dave, Tim pull engine & replace the rings, your oil problem will go away!

 

[mikeduwe]

Also check your oil level, if you are having carb overfill/rich running you may be getting fuel in your oil, which thins it out and raises its level.

Before anyone goes pulling the engine apart, first check crankcase vacuum.

 

[trapperjohn]

Also check that your dip stick is secure and locked in as that will change your crankcase pressure.

 

[sreynolds]

Yeah........

I can say I have a new Kohler K series that does that. I mean like,,,,,,,,, new. Has a hose from the breather w/mesh filter to the air filter/air cleaner.

I can't think it would be much different, would it?

 

[knottyrope]

is oil level too high?
can you remove the breather and check the reed valve?

 

[rutdigger]

FWIW, I had a similar situation with my P218G. I seem to recall the culprit was a leaky oil filter adapter gasket. Seeping oil at the adapter would get get blown up into the air cleaner housing by the flywheel. I replaced the adapter gasket, and no more oil in the air cleaner housing. YMMV.

 

[deereguy140]

I would check the o-ring on the underside of the dipstick cap. As Ron Haass correctly mentioned, if the oil dipstick is not sealed correctly when it is in the filler tube this problem can occur. Unfortunately, the problem you have can certainly mean more serious wear issues as noted by other members. Good luck. Joe S.

 

[rutdigger]

Here's a thread on my oil issue I mentioned earlier.

http://www.mytractorforum.com/showthread.php?t=260999

 

[tmdools]

Boomer the oil level did look high but when it ran with out the air filter it looked like the oil mist was blowing straight out of the crankcase breather tube I change the oil over the weekend what is the oil charge for a b48g? I dont want to believe its rings I am not seeing any smoke while the engine is running I will do a compression test tomorrow thx for the responses

 

[tmdools]

Mike how do I check the engine vacuum?

 

[dave_thompson]

tim get a vacuum guage and hook it up to fuel pump nipple. just because you might have good compresson doesnt mean the oil rings on pistons arent stuck Dave

 

[knottyrope]

where the breather is located there is a plate and under it is a valve, you might have crud in the valve or a broken one

 

[tmdools]

I will check both of those and report back thx

 

[akaothermick]

Does the crankcase produce vacuum??

 

[trapperjohn]

Your crank case is closed so when the piston goes up, it produces vacuum and when it comes down, it produces pressure. That pressure/vacuum cycle is the pulse that operates your fuel pump. you have a breather which has a one way check valve and a dip stick, which are the only two opening to the crank case. So if your dip stick has a bad o-ring or is loose, it disrupts the balance between the pressure/vacuum. I hope this makes sense.

 

[sreynolds]

Is the above true for a one cyl engine or a two....or both?

I understand that there is supposed to be slight negative pressure on some i.e. a slight vacuum if the engine does not have much blow by.

 

[trapperjohn]

Scott, The above is for a completely closed crank case whereas most single cylinder engines only rely on a breather with a check valve and much less pressure and vacuum. The dip stick doesn't have much if any affect on them. Now if blowy is bad enough, it will blow oil out the seals, dip stick and even the breather. Blow by is your pressure from the explosion above the piston getting passed the rings and pressurizing the crank case and thereby getting out wherever it can.

 

[boomers_influence]

ron
i applaud you.
it is nice to hear that some one
else understands the pulse fuel pump
system operation
thank you. boomer