does this look like bad valve stem seals?

[93AWDDSM]

been puffing some smoke a little bit lately, haven't checked the turbo yet, I'm at work currently. I have a short 30 second video I took to show you guys and maybe get some opinions. Maybe turbo? maybe valve stem seals? Thanks a ton for insight.
Idle puffing video

 

[XiKeiyaZI]

I just have to ask - what's the temperature where you are currently?

Also does it do this throughout the RPM range?
Have you confirmed if it does this on decel as well?
And for the hell of it, have you watched your coolant while idling and checked for bubbles?

 

[93AWDDSM]

Thanks for the response.

Current temp - 46 Degrees and ranges to 60's in the mid day
from what I have seen the first day yesterday, it slightly did it 1st throughout the rpms and 2nd as well, mainly idling for 1-2 minutes and then slight rev and it then continues to puff on its own for a little.

*have not confirmed that it does it on decel
*also have not watched the coolant for bubbling

Edit: I will be pulling the J pipe from the turbo as well as the intake tube to check for Oil/shaft play, also will be checking compression in all cylinders probably on thursday, if all checks out I assume the valve stem seals have just worn out?

 

[gieri002]

It could be a multitude of different things but it sounds like you are on the right track. Let us know how the turbo inspection and compression test go!

 

[primo513]

Give a check on the pcv valve, I had a lot of blow-by in my last motor and caused the dang IM to start building up oil and was getting pulled in and burning which I couldnt figure it out for the life of me. I had a newer turbo and brand new valve seals when I swapped heads. So i eliminated valve seals out of the equation for my situation

 

[JusMX141]

it slightly did it 1st throughout the rpms and 2nd as well, mainly idling for 1-2 minutes and then slight rev and it then continues to puff on its own for a little.

Valve seals.

Try a thicker oil as a temporary fix.

 

[93AWDDSM]

Thanks for the responses everyone.

I will check the PCV valve and turbo inlet/j pipe today for leaks, borrowing a compression tester tomorrow to make sure I'm not getting huge amount of ring blowby, on other note my damn oil return line gasket is shot and a auto store doesn't have a single gasket for that, can I just get the make your own gasket paper stuff and slightly seal it with some Rtv?

 

[gieri002]

You can use gasket paper and rtv for the return line. Also make sure to wrap the threads of the two bolts holding it to the oil pan in teflon tape, that is a very common place for a leak since those holes go all the way through!

 

[93AWDDSM]

Ok so I checked some parts today
J pipe= clean no oil
Turbo shaft play= none in/out, very slight up/down, also it spins very freely

Have not yet checked Pcv, (anyways what am I actually looking for?)
Compression test: picking up tester tomorrow
So far I feel like its leaning towards the valve stem seals, opinions?
Thanks

 

[primo513]

When it was blow-by for me, the pcv valve was pushing oil into my intake mani. I would check if there is any oil buildup in the manifold. But as others stated, sounds like valve seals, especially since your j-pipe is clean, if it was the turbo your entire IC piping would be coated in oil

 

[JusMX141]

can I just get the make your own gasket paper stuff and slightly seal it with some Rtv?

DO NOT USE RTV ON YOUR OIL DRAIN GASKET, EVER. Nothing thicker than copper gasket spray or brushable high-tack should be used or it can ooze into the drain hole and restrict oil flow into the pan.

TD02 TD03 TF035 TD04 TD05 TD06 Turbo Oil Drain Gasket | eBay

 

[DSM1G90]

Valve seals = culprit on 10 plus year old motors that's never seen an overhaul. Teflon material that the seal is made from begins to harden up due to the heat causing poor sealing surfaces.

Can't get away from this condition - it has to happen.

DSM

 

[gieri002]

DO NOT USE RTV ON YOUR OIL DRAIN GASKET, EVER. Nothing thicker than copper gasket spray or brushable high-tack should be used or it can ooze into the drain hole and restrict oil flow into the pan.

TD02 TD03 TF035 TD04 TD05 TD06 Turbo Oil Drain Gasket | eBay

Sorry Justin I didn't mean to spread bad info. A lot of people have used RTV on their drain lines with success. I read this thread some time ago where many reputable dsmers used it:

http://www.dsmtuners.com/forums/newbie-forum/423670-rtv-gaskets-i-dont-know.html

 

[JusMX141]

A lot of people have used RTV on their drain lines with success. I read this thread some time ago where many reputable dsmers used it:

http://www.dsmtuners.com/forums/newbie-forum/423670-rtv-gaskets-i-dont-know.html

...and I created a thread on behalf of the vast majority who does not understand how to properly use RTV illustrating exactly what using excessive amounts of sealant on a drain gasket does to restrict the turbo's oil drain:

http://www.dsmtuners.com/forums/tur...uys-lay-off-excess-rtv-oil-drain-flanges.html

 

[93AWDDSM]

Lol thanks, but I do not use Rtv in excess, I only use small amounts. I fully understand the capability of Rtv clogging stuff up.next question, I do not currently have the time to replace the valve stem seals, besides Burning oil, will It be alright to continue to drive as is? ( have to pass emissions in 2 months, which will likely never happen with puffin smoke that like)

Edit: I purchased a compression test gauge, and will be checking compression in 1 hour. I will post back with results to see if my rings are leaking.

Thanks everyone

Edit: update @ 8:20 PM, did the compression test and for a mystery motor its proven very well. 159/155/155/159 that was fully warmed up and WOT.

my conclusion, must be valve stem seals.

 

[DSM1G90]

I've seen motors with bad stem seals pass the sniff test since the sniffer is hunting for CO and HC .. not oily smoke.

 

[white92talontsi]

Lol thanks, but I do not use Rtv in excess, I only use small amounts. I fully understand the capability of Rtv clogging stuff up.next question, I do not currently have the time to replace the valve stem seals, besides Burning oil, will It be alright to continue to drive as is? ( have to pass emissions in 2 months, which will likely never happen with puffin smoke that like)

Edit: I purchased a compression test gauge, and will be checking compression in 1 hour. I will post back with results to see if my rings are leaking.

Thanks everyone

Edit: update @ 8:20 PM, did the compression test and for a mystery motor its proven very well. 159/155/155/159 that was fully warmed up and WOT.

my conclusion, must be valve stem seals.

Compression test will not rule out a bad oil scraper ring or bad oil rings.

 

[93AWDDSM]

Compression test will not rule out a bad oil scraper ring or bad oil rings.

What other test should I do as well then.

 

[solson1041]

What other test should I do as well then.

A leakdown test would tell more about the rings. A compression test only shows the peak pressure in the cylinder, a leakdown test will tell you how well the cylinder holds that pressure. I'm not 100% sure on exactly the details of doing one, but a quick google search would help you out.

That being said, I personally would mostly count rings out at this point and be further investigating valve seals. You can make your own LD tester, or buy one, the cheapest I know of is like 40 bucks at Harbor Freight, making one probably couldn't be too much cheaper.

Then again, pulling the head will cost you at least a HG set, so if you're not 100% sure, it might be worth it to leakdown test it.

 

[93AWDDSM]

A leakdown test would tell more about the rings. A compression test only shows the peak pressure in the cylinder, a leakdown test will tell you how well the cylinder holds that pressure. I'm not 100% sure on exactly the details of doing one, but a quick google search would help you out.

That being said, I personally would mostly count rings out at this point and be further investigating valve seals. You can make your own LD tester, or buy one, the cheapest I know of is like 40 bucks at Harbor Freight, making one probably couldn't be too much cheaper.

Then again, pulling the head will cost you at least a HG set, so if you're not 100% sure, it might be worth it to leakdown test it.

Thanks for the reply, I will do a leak down test with in the week or so to check how well everything is holding up, then get some valve stem seals but the miller tool for doing the job while the head is in the car is so damn expensive

 

[gieri002]

This is what I used to do mine:

Mitsubishi 4G63 Valve Spring Compressor

It's pretty reasonably priced and worked perfect!

 

[93AWDDSM]

This is what I used to do mine:

Mitsubishi 4G63 Valve Spring Compressor

It's pretty reasonably priced and worked perfect!

Oh wow thanks, the one I saw on vfaq miller tool was saying like 356$
That definitely helped!

 

[gieri002]

Oh wow thanks, the one I saw on vfaq miller tool was saying like 356$
That definitely helped!

No problem, happy I could help you save some $$$.

 

[93AWDDSM]

Also one more question, what I be able to pull the valve cover an actually see the worn stem seals while turning the motor by hand or its just one of those things you have to dig into? If so that's fine and ill try to pass emissions before putting in work.

Thanks everyone for the replys and insight, you all have helped very much.

 

[93AWDDSM]

passed emissions today with worn stem seals, smoked a lot less thanks to Lucas oil product.