Re: JD 430 PCV Smoke
Usually a diesel engine will be tough to start,or have one or more cylinders not firing after a cold start,and belch white smoke (unburnt fuel) until it warms up,if the compression is below a certain amount--most have about 400 psi as a minimum..
My diesel pickup started belching white smoke last winter for several minutes after a cold start ,and was being a bear to get started,even with all the glow plugs working and good batteries,and it would skip like it had a dead cylinder or two..after awhile the smoking stopped,it ran more smoothly,and was able to be driven normally,then I noticed on a hard pull or highway on ramp acceleration ,it would starve for fuel and bog down..
I suspected I got a batch of watered down fuel ,but I saw no evidence of water in samples I took--then I thought perhaps I filled up at a place that didn't sell much diesel and may have gotten a load of "summer" diesel fuel last time I filled it in November...
I changed the fuel filter despite it not having more than a few thousand miles,and its a big one that holds about a quart of fuel,that made zero difference..
Then I discovered the electric fuel pump that had been added to the fuel line near the gas tank had failed,the engine still has a mechanical fuel pump but someone added the electric one to make for easier fuel system bleeding,and I did notice it ran better with both pumps working..
I replaced the electric fuel pump ,and it then started much easier,ran smoother,and only puffed white smoke for a minute if that..so I assume the injector pump is getting tired,and the added pressure of the electric fuel pump helps compensate for that.
The engine only has a "CDR valve" to help get excess pressure out of the crankcase and it is clean and functional,and there is hardly any blow by at the oil filler cap opening with it running,so I assume there isn't any bad rings or pistons in it--oil consumption is very low too,only a quart every 1000 miles or so,and most of that is lost from leaks..
I'm not familiar with your diesel but I assume it must have some sort of crankcase ventilation system that may not be functioning right,or perhaps it is being "flooded" with excess fuel from a bad injector or injector pump--usually you'll get a bad knock of an injector sticks open though..