excessive crank case pressure.

Joined
Feb 18, 2015
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new member. thanx for the join.I picked up a craftsman rider and have engine problems. the crankcase is overfull with oil. I drained it down, and turned it over with the battery. dipstick tube was out and blew oil everywhere. I pulled the head, and turned it over with starter and it blew oil out of the valve/tappet gallery. like two feet in front ??? any idea,s as to the problem hanx Doug
 

bertsmobile1

Lawn Royalty
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Nov 29, 2014
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24,995
is the crankcase breather blocked ?
The piston going down pumps just as hard as the piston going up.
If the oil is thin ( bad carb float valve ) or oil overfilled this will be worse.
And yes oil will go a long way if you try to turn over a mower without the dip stick in.
 
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