Quote:
Originally Posted by dieseldan44
.......What exactly is the gas escaping from the top of the crankcase? It isn't all from air escaping past the rings...it looks like the vacuum pump exhausts into the crankcase as well.
What is the white smoke? It smells like oil...is it...or could it be unburnt diesel?
My engine has more than normal white smoke escaping from the top of the crankcase, but passes the 'tea-kettle' oil cap test just fine, even with the plastic oil cap. Engine runs just fine. Does this mean something else?
Thanks,
dd
|
Unless you block the breather tube port on the valve cover, I don't see how the "tea-kettle" test signifies much and even then what is "too much". With it open, you would have some serious venting if the oil cap dances. The only test with accuracy here is a compression check.
Every diesel, car/truck, that I have seen vents a little grey smoke when you remove the oil cap on a warm engine. I believe this is due to the fact that oil is injected to the underside of the pistons for cooling. With this in mind, operating temp., or more importantly oil temp., would be the biggest factor on how much "smoking" is seen. Check your oil cooler after a long drive and see if it is warm.