982 trouble
 

I have a 982 with a B48G Onan blowing oil into the air cleaner. There is 110 lbs. compression on both sides.I took valve breather apart today and the spring to hold the breather closed was out of place, I thought OK, easy fix, I put it back together ran it around for 20 min. no oil in air cleaner. I started to mow and 5 min later, the oil blew into the air filter again. I removed the air filter and the cover so I could keep an eye on things. Driving the tractor around, it does not blow oil out but, if I turn the deck on to load the eng. it only takes a few min. till it starts to blow oil out the breather. What do you think? thank you?

Mcamp, how does the spring, reed and breather filter packing look? If that's all good sounds like crankcase pressure problem. Can you do a leakdown test on it?

I would check crankcase pressure with a water monometer. leakdown tester might tell you what you need to know also

The spring reed and filter packing are all good, i have no way to check crankcase pressure.

look in a Kohler manual. it shows how to make one and use it, cheap and easy to make