Replaced turbo last year now there is smoke coming from pcv valve and have 30% compression in number 1 and 200 in the others what is my problem

Burning oil. Could be a couple of things. Possible your valve guide seals are warn out. If its blue smoke mostly when you first start the car, its likely valve guide seals. If its continuously smoking blue, its more than likely a broken or warn out piston ring. If its just every so slightly blue in tent, it might be worth a try to replace your PCV valve first. When the PCV valve gets completely gummed up, the pressure inside your valve covers has no way to vent other than forcing its way through the valves into the cylinders often times taking oil with it. Since PCV's usually only run out about $10 its worth a shot. Other wise, you've got a decent overhaul ahead of you for either piston rings or valve seals...on a 12 year old car most folks would either choose to scrap it, or live with the blue smoke while monitoring oil levels and watching for fouled plugs. Hope that helps and good luck!!

Your issue could be a few things. Simplest first would be the PVC valve. Other issue would be valve seals, valve guides or piton rings. The blue smoke is from your vehicle burning oil

I’m happy to assist further over the phone at https://www.6ya.com/expert/jeremy_677dced97ad9bddf

use 2 tools .
a compression guage. (RTM about the oil trick)
and the leak down tool , at spark holes.
this tells you the ring leak down rates, done correctly
all shops worth salt, know it.
if car smokes, bingo
if only smokes first start up, bad valve seals.

at 200k , this can be normal, if not freq. oil changes or was overheated.

a pro can tell you what leaks with the leak tool
valves or rings, or other places....all bad....

run fault codes and look for EGR valve and pcv valve faults. Black smoke is unburnt diesel so it may be the injectors need attention. If it is a turbo then check the oil lines to the turbo and check turbo operation as it may not be producing air pressure for the engine.

Hi, the vacuum line to the air cleaner usually tees into the PCV hose from the valve cover. Black smoke at startup is probably unrelated. That may be caused by leaky injectors or an evap purge valve that is stuck open.

Sounds like the turbo seal is leaking just from the symptoms but the blue smoke can also be valve guides or valve seats. It can also be the piston rings that have seized to the piston body.

It is time to save yourself a $75.00 shop charge and buy a compression tester. (make sure you have the Diesel compression test adapter also) Then check the compression on all cylinders. If the compression is good then your looking at either turbo or cylinder head repairs. The blue smoke is telling you it is time to do something as it will be sitting on the sidelines come the next SMOG test.

Sounds like you have a clogged PCV valve thats the valve that lets the gases that get into the crankcase be rerouted back into the intake. It's silver about two inches and is usually in a rubber fitting in the valve cover and will have a hose on the other end. it's no tools installation just pull the hose off pull it out and replace with a new one. thats the first thing i'd do - 10 mins and 10 bucks should do it

It appears that the oil is being burned by the engine. You may or may not notice the engine doesn't have the same power as it used to
Possible causes are piston rings, valve seals may be worn, damaged or worn valve guides, PCV valve is faulty. The only one that would be a DIY would be the PCV Valve, all the others should be left to qualified people

1 Inspect Piston Ring Set Worn or broken piston rings. 2 Inspect Valve Stem Seal Cracked or brittle valve stem seals allowing oil to enter combustion chamber. 3 Inspect Head Gasket - Performance Head gasket leaking coolant into cylinders 4 Inspect Fuel Injector Rich injector 5 Inspect PCV Valve Plugged or damaged pcv valve. 6 Inspect Engine Worn or scored cylinder block 7 Inspect Piston Worn or damaged piston. 8 Inspect Valve Guide Worn valve guides

Sounds like it's time for a compression check. The head or gasket could be blown, and this test will confirm or deny this fact. Your smoke/steam and the oily residue are pretty good clues...accordianman