Blue smoke from exhaust when starting cold ---- SOLVED

[kwelhand]

SOLVED - New $9 PCV valve resolved the blue smoke issue.

*********************************************************************

14 LX570 w/ 160K
Purchased from a Lexus dealer recently

When I started the vehicle in the morning, I have noticed blue smoke coming out from the exhaust.
It goes away when idling.
I also have quite a lot of old oil leak trace on top of driver side engine (see pic).

Recent Lexus service history stated the following info prior to sale:
11/2021
Service: *** OPCODE NOT ON
REPORT ***
Description: *** OPCODE NOT ON
REPORT ***~|~ ~|~ ~|~NO ISSUES
FOUND OTHER THAN AN OIL LEAK
OF UNKNOWN ORIGIN

What seems the problem?
Perhaps blown gasket? Worn out valve seals?
Bad PCV? ordered a new one anyway from a local Lexus dealer.
It has new coils (OEM) by previous owner and the spark plug looked great but changed w/ OEM.
The vehicle looked well maintained overall.
Any thoughts?

 

[Sandroad]

You seemed to be getting some help with your 12/11 thread on this. Is the blue smoke on start up new since then?

Engine top portion with heavy oil residue issue

Finally able to purchase a 2014 LX570 w/ 160K miles from a local Lexus dealer after months of looking. Drives great w/ good maintenance history. One thing that bothers me is the top right side of the engine has heavy oil residue build-up (see red circled pic). Only the right side of the engine...

forum.ih8mud.com

 

[Dusten]

Blue smoke at start up after sitting, that clears quickly is typically a sign of leaking valve seals. They allow oil past the seal down the valve and into the combustion chamber.

 

[kwelhand]

You seemed to be getting some help with your 12/11 thread on this. Is the blue smoke on start up new since then?

Engine top portion with heavy oil residue issue

Finally able to purchase a 2014 LX570 w/ 160K miles from a local Lexus dealer after months of looking. Drives great w/ good maintenance history. One thing that bothers me is the top right side of the engine has heavy oil residue build-up (see red circled pic). Only the right side of the engine...

forum.ih8mud.com

Blue smoke at start up after sitting, that clears quickly is typically a sign of leaking valve seals. They allow oil past the seal down the valve and into the combustion chamber.

Oh my... is it costly to repair or complex task?

 

[kwelhand]

You seemed to be getting some help with your 12/11 thread on this. Is the blue smoke on start up new since then?

Engine top portion with heavy oil residue issue

Finally able to purchase a 2014 LX570 w/ 160K miles from a local Lexus dealer after months of looking. Drives great w/ good maintenance history. One thing that bothers me is the top right side of the engine has heavy oil residue build-up (see red circled pic). Only the right side of the engine...

forum.ih8mud.com

Not sure... I just found out when my daughter said something about pretty blue smoke yesterday morning

 

[Dusten]

Oh my... is it costly to repair or complex task?

I have not done them in a land cruiser. Most ohc engines are a pain in the ass

 

[kwelhand]

I have not done them in a land cruiser. Most ohc engines are a pain in the ass

That's what I thought... all that harness and looks like like labor intensive.

 

[kwelhand]

So, I had this nasty and sometime massive blue smoke coming from the exhaust when starting in the cold morning.
Changed the old PCV valve with a new $9 Toyota PCV valve and blue smoke is completely gone!
Everything is working smoothly and no more blue smoke or burning oil.
The old PCV valve isn't that bad but I guess bad enough to cause the added pressure to the engine.
I would highly recommend to change your PCV valve even it's not completely bad or if you had it for awhile.

 

[bloc]

The old PCV valve isn't that bad...

How did you determine this part?

Either way, glad you got it figured out. Nine dollar part!

 

[kwelhand]

How did you determine this part?

Either way, glad you got it figured out. Nine dollar part!

Not the accurate way but you can shake it and visually inspect the end.
The new one moves freely but my old one wasn’t so I replaced it… no more blue smoke!