Question for TP/LTH users, oil smoke @ high RPM?

LostSol · 08-28-2013, 09:38 AM

gives me something to do when i get home from work, ill report back later if mine does it

Sh0velMan · 08-28-2013, 09:44 AM

Quote:

Originally Posted by LostSol

gives me something to do when i get home from work, ill report back later if mine does it

also note what oil you have!

Chuck33079 · 08-28-2013, 09:55 AM

Any oil consumption to go with the smoke?

LostSol · 08-28-2013, 10:23 AM

Quote:

Originally Posted by Sh0velMan

also note what oil you have!

redline 5w30 changed ~500 miles ago

Sh0velMan · 08-28-2013, 11:04 AM

Quote:

Originally Posted by Chuck33079

Any oil consumption to go with the smoke?

Not enough for me to tell.

Megan370z · 08-28-2013, 11:22 AM

Quote:

Originally Posted by synolimit

I guess I can only say piston rings then, maybe valve. The vacuum increase at high revs could be sucking oil into the chamber. Under wot you should have a lot of bow by but since you don't go wot 24/7 you're probably not seeing a big drop in oil or filling the catch can up fast. At this point I'd go buy a compression kit from autozone for like $40 and test the cylinders and see what you get. The manual should post a range for healthy motors.

There is next to no vacuum under WOT so its not sucking oil by the piston ring neither by the valve seal at WOT
you would see it when he was revving up his engine .. only when he released the gas pedal that by the time the un-burn oil travel to the exit we were seeing blue smoke which is during vaccum created by releasing the gas pedal which close the TB & VVEL.

the exhaust gas was relatively clear when he was actually revving the engine.

what is more prone to wear , rubber or piston ring ? anyway valve stem seal are a common problem. there is no sign on that video that show the piston ring to be defective.

LostSol · 08-28-2013, 11:23 AM

my guess, based on prior cars without cats, is youre seeing the AFR become quickly very pig rich as the throttle closes and revs drop, and some of that fuel igniting late causing some smoke out the exhaust. i had one car that would actually shoot a small flame doing that exact same thing.

Megan370z · 08-28-2013, 11:26 AM

Quote:

Originally Posted by LostSol

my guess, based on prior cars without cats, is youre seeing the AFR become quickly very pig rich as the throttle closes and revs drop, and some of that fuel igniting late causing some smoke out the exhaust. i had one car that would actually shoot a small flame doing that exact same thing.

pig rich would show black smoke coming out , not blue-ish smoke which is Oil.
but I see what you are saying

Sh0velMan · 08-28-2013, 11:46 AM

Quote:

Originally Posted by Megan370z

pig rich would show black smoke coming out , not blue-ish smoke which is Oil.
but I see what you are saying

There is some black smoke when revving "up". If you watch the video in HD you can see the smoke + heat ripples when the throttle is open.

It is running really rich right now, will be fixing that soon.

The smoke you see poof out after the throttle closes is oil smoke for certain.

luigi90210 · 08-28-2013, 03:39 PM

Quote:

Originally Posted by Megan370z

no where near 160F after 20mins ?
I guess mine get up to temps quite faster than yours then.

if i drive for 20 mins then yes it gets to temp but sitting there and idling for 20 mins will not get it up to 160F

Quote:

Originally Posted by Sh0velMan

Part of the warm up process, for me, is to gently rev into VVEL land ~5500rpm (after it's idled a few minutes) because that's how you can put heat into the oil.

It was around 165-170 indicated when I started this video, right at tstat open ~183 when I stopped. Dropped back to ~170 immediately.

No smoke on start up, only on full vacuum. I'm thinking it's intake valve seals as well, Megan.

have someone follow you and see if you are burning oil under load on the highway or something, if you are then i would check your intake tubes for oil if you dont have oil catch cans installed, if there is oil in your intakes than you might want to check your compression and see if you lost any(that would also explain your smoke because oil is being sprayed into your intakes via PCV valve) and if there isnt, you will want to check your engine out anyways since you might be leaking oil through a seal or something

Chuck33079 · 08-28-2013, 03:43 PM

He's got catch cans.

122554 · 08-28-2013, 03:58 PM

What do your plugs look like?

luigi90210 · 08-28-2013, 05:49 PM

Quote:

Originally Posted by Chuck33079

He's got catch cans.

i guess a better way to check if he has bad seals is to do a compression test and a blow down test afterwards if compression is low

hope you find out what is going on shovelman

LostSol · 08-28-2013, 07:16 PM

Tried what you did tonight, no smoke here (well a bit of black smoke from running rich but nothing blueish like you showed) sorry if that didnt help.

synolimit · 08-28-2013, 08:41 PM

Quote:

Originally Posted by Megan370z

There is next to no vacuum under WOT so its not sucking oil by the piston ring neither by the valve seal at WOT
you would see it when he was revving up his engine .. only when he released the gas pedal that by the time the un-burn oil travel to the exit we were seeing blue smoke which is during vaccum created by releasing the gas pedal which close the TB & VVEL.

the exhaust gas was relatively clear when he was actually revving the engine.

what is more prone to wear , rubber or piston ring ? anyway valve stem seal are a common problem. there is no sign on that video that show the piston ring to be defective.

Yes I know. That's why I said high REVS. Meaning the rpms are up there without load since he told me it only happens on lift off. If I meant high rpm at wot, I'd of said that. Figured he'd understand since we both knew he was talking about lift off.

Quote:

Originally Posted by luigi90210

i guess a better way to check if he has bad seals is to do a compression test and a blow down test afterwards if compression is low

hope you find out what is going on shovelman

Do I hear a echo? Ha

08-28-2013, 09:38 AM	#16 (permalink)
LostSol Premium Member Join Date: Jan 2013 Location: Orlando Posts: 1,021 Drives: 2010 370z 40th A.E. Rep Power: 15	gives me something to do when i get home from work, ill report back later if mine does it __________________ 2010 Nissan 370Z 40th Anniversary Edition #762/1000 \| Forgestar \| Michelin \| Swift \| TRS \| Z Speed \| ARK \| Z1 \| Hawk \| CFE \| Evo-R \| GTMat \| Stillen \| Seibon \| Whiteline \| Pioneer \|

08-28-2013, 09:55 AM	#18 (permalink)
Chuck33079 A True Z Fanatic Join Date: Nov 2011 Location: Houston Posts: 12,265 Drives: 2011 370ztt Rep Power: 29538	Any oil consumption to go with the smoke? __________________ 2011 MB Touring-Sport-6sp-Nav/GTM TT/FI TT TDX/JTran/Kosmic/Eibach/Hotchkis/SPC/CSF/RPS/SoThatsWhereAllMyMoneyWent

08-28-2013, 11:23 AM	#22 (permalink)
LostSol Premium Member Join Date: Jan 2013 Location: Orlando Posts: 1,021 Drives: 2010 370z 40th A.E. Rep Power: 15	my guess, based on prior cars without cats, is youre seeing the AFR become quickly very pig rich as the throttle closes and revs drop, and some of that fuel igniting late causing some smoke out the exhaust. i had one car that would actually shoot a small flame doing that exact same thing. __________________ 2010 Nissan 370Z 40th Anniversary Edition #762/1000 \| Forgestar \| Michelin \| Swift \| TRS \| Z Speed \| ARK \| Z1 \| Hawk \| CFE \| Evo-R \| GTMat \| Stillen \| Seibon \| Whiteline \| Pioneer \|

08-28-2013, 03:43 PM	#26 (permalink)
Chuck33079 A True Z Fanatic Join Date: Nov 2011 Location: Houston Posts: 12,265 Drives: 2011 370ztt Rep Power: 29538	He's got catch cans. luigi90210 likes this. __________________ 2011 MB Touring-Sport-6sp-Nav/GTM TT/FI TT TDX/JTran/Kosmic/Eibach/Hotchkis/SPC/CSF/RPS/SoThatsWhereAllMyMoneyWent

08-28-2013, 03:58 PM	#27 (permalink)
122554 Track Member Join Date: Jan 2013 Location: My own world Posts: 506 Drives: 2010 Nismo Rep Power: 13	What do your plugs look like? luigi90210 likes this. __________________ I don't normally drink beer, but when I do....i drink a lot!

08-28-2013, 07:16 PM	#29 (permalink)
LostSol Premium Member Join Date: Jan 2013 Location: Orlando Posts: 1,021 Drives: 2010 370z 40th A.E. Rep Power: 15	Tried what you did tonight, no smoke here (well a bit of black smoke from running rich but nothing blueish like you showed) sorry if that didnt help. __________________ 2010 Nissan 370Z 40th Anniversary Edition #762/1000 \| Forgestar \| Michelin \| Swift \| TRS \| Z Speed \| ARK \| Z1 \| Hawk \| CFE \| Evo-R \| GTMat \| Stillen \| Seibon \| Whiteline \| Pioneer \|

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