I have a 4440 with some hours but it starts well summer or winter, doesn't use much oil, but at times when I start it, engine oil runs out the blowby tube, like pouring oil out of a can, amounts to maybe a cup, then it quits and doesn't bother anymore. It doesn't do it all the time. Hauling bales down the road there will be an oil film on the right back tire, but working around the yard doesn't bother. No hydraulic leaks. There are no signs of water getting in the oil. Anyone else had that problem ? Thanks.
- Thread starter grnwrnchr
- Start date
It takes some oil, maybe a couple quarts in 100 hrs, seems to have enough power and starts good. Adding oil isn't a problem, it's the mess it makes. Going to pull injectors next and check leakage. It just makes no sense that it pushes out oil like that. I don't mean a mist, on start up it pours out about a cup of oil like someone pouring it out of a can, a regular stream, then it quits, but doesn't do it every time.
Tx Jim
Well-known Member
- Location
- Coyote Flats, Texas
I wonder if the oil drain holes in the cyl head are clogged?
Glen D Anderson
Member
Is it possible that one of the rocker shaft plugs is leaking or fallen out & the top of the head is being flooded with oil faster than it can drain back?
buickanddeere
Well-known Member
Any opportunity to give her a dyno run and measure exhaust port temps with an infrared tool at idle and at full power ?
Lee B
Member
It could be pooling in the horizontal run along the top of the valve cover or there might be a conditional pooling internal to the vent can inside the valve cover. A cup is quite a bit though. I would revisit the can inside the valve cover, drill some drain holes in it maybe and make the horizontal run an uphill climb no matter what local hump the tractor was parked on the side of overnight. Things to do also would be to test first startup blow by with the old dollar bill trick but don't use real money for goodness sake. Looking for wild variations in amounts of blow by from day to day that might hold the answer for why not always it does this.
Glen D Anderson
Member
Well, so much for that idea then......back to the drawing board! LOL
If the oil lose is only at start up some times I would look at breather inside cover or out .If your losing oil out breather while running at all times you my have
bigger problems . Does the exhaust show oil smoke . Sounds like oil vapor condensing in breather and not draining back to crankcase .
bigger problems . Does the exhaust show oil smoke . Sounds like oil vapor condensing in breather and not draining back to crankcase .
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