Burning Oil, How?

[Rennat]

my eclipse had that problem... start it up, no smoke. driving away no smoke.

but when i would boost it away, my girlfriend who was driving behind me said there was a trail of "stuff" from where my car was. haha

but i can see why it happens when you get back on throttle. Your turbo is just spinning... then on decel it takes away any "load" on it, and then when you get back on it, it sucks some oil out and then burns it. (it makes sense in my head at least)

and thanks again for lettin me borrow the torque plate!!!!!

 

[CyFi6]

With all due respect... Everyone needs to re-read the first post.

The puff of smoke on decel is a/f going rich momentarily because he is venting to atmosphere. Period.

If he is burning oil on decel, explain to me why there is no smoke at startup. If oil gets into the combustion chamber on decel there would be residual oil left after shutdown.


_

Many times the intake valve seals will leak on decell from the high vacuum in the intake manifold and will not leak any noticeable amount at any other time. Blue smoke on decell is actually the main symptom of intake valve seals leaking.

 

[Aznfryboi]

Best thing to do is, Just GEt a Whole new Set of Gasket and Replace all of them!, Go to ebay and buy them, there like 87 gasket seals cost about $50. it could be either comming from cam seal, or head gasket, i don't know. Put its what i would do. Replace all gasket, and leave head gasket after market.

 

[Rennat]

he JUST rebuilt his engine...

and its not going to be a gasket...

 

[bigaaron]

Never seen a rich gasoline mixture burn white. Transmission fluid and antifreeze burn white.

Excess fuel burns black.

If it's rich enough it will make plenty of white smoke. Pop off an ic pipe on a 7m and try to drive it, and you'll see white smoke. :icon_wink

 

[nosman4]

I don't know why, but I get the feeling some of you guys are not reading previous posts. I don't know where fryboi pulled out cam seal or headgasket. READ ALL POSTS!! I just rebuilt the motor all new oem quality gaskets, not cheap ebay crap. Compression numbers again were 160psi on all cylinders, no change or very little when oil added. Not rings! I rechecked the plugs and there is a little evidence of oil burning so with the help of some of you guys I have pretty much narrowed it down to the turbo seals. I still have to check the lower IC pipe, but with the amount of play in the turbo, i think it's time for a rebuild.
Any more educated suggestions are appreciated. To those who have helped, you know who you are and thanks again.

Ian

 

[Doward]

If it's rich enough it will make plenty of white smoke. Pop off an ic pipe on a 7m and try to drive it, and you'll see white smoke. :icon_wink

I won't see anything but less power - I'm speed density

I guess I've just never had anything run THAT rich, lol!

 

[tlo86]

did you check for leakage from the turbo? any visible oil leaks on the bottom?

 

[sneakypete]

if you pull off the intake pipe to the turbo, there should be visible oil inside the inlet if it were leaking.... at least that was the case when i had a ct

 

[WhtMa71]

Thats not always the case..Usually if theres oil in the inlet thats just from the PCV system. At least i havnt seen a turbo leak oil into the inlet. Its ususally in the intercooler pipes or blows out into the exhaust side.

 

[CBatstone]

I am seeing the exact same issue with my 7MGTE. I see a lot of smoke when I'm idling at a stop light. When I get on it and build some good boost (out of traffic) there is no visible smoke. Most of the time when Idling the exhaust is as clear as can be, no trace of smoke, then sometimes after startup, or at a stoplight or in traffic it will smoke (always blue)

1400 miles on fresh rebuild
Remanufactured Head
Rebuilt CT26

Going to check all items mentioned in this post, Starting with Intercooler pipes and checking PCV system.