Unless things have changed from the last time I read an oil thread here (long ago mind you) 10w40 is crappy oil because of the way its made to achieve the 10w40 rating. I'd recommend 10w30 or 20w50 (depending on temps where you live.) I run 20w50 summer here and 10w30 winter.

 

You got a few options here, take off the filler cap or the pull the dipstick out and drive it see if it still smokes, if it does the PCV is bad. If you drive and no chnage put it back together and drive it for about 1000 miles or more, keep good eye on oil level, keep it full... once you get about 1000 if it was excess oil inside it should be about burned off, if it still smokes after 1000 miles with no change in amount of smoke the seals are gone on the pressure side..

So start driving ...thats your home work for the weekend..get 1000 miles on it and report back.

 

yay!

not only was my PCV not venting properly, due to the apparent inability of the stock PCV routing system to work properly while being connected to the intake, I was also apparently still burning off old oil.

long story short, 50 miles on the interstate = NO MORE SMOKE! YAY!
except on startup, but what rotary doesn't smoke a little on startup?

now if I could only track down this stupid 3800rpm hesitation I would finally have a well running 7 after 2 years!.

and NO it's not my ECU ground, I already tried cleaning that yesterday and it did nothing. And i'm 99% sure it isn't a boost leak because when i hit the 3800 mark under load (there is only hesitation under boost) the wideband goes to ultra lean.

 

i wish i could fix this issue on my car! it too smokes at idle. but if i hold the rpms at ~2k it will go away. i also noticed signs of a leak between the back plate and turbine housing (where it bolts off to access the wastgate.)

 

There are quite a few grounding threads on the forum, and if they are nice enough, Icemark or Hailers may chime in and let you know which wires to ground on the ECU and pressure sensor. I know which they are on an N/A but not on a TII.

 

grounding? why would that be a cause? i have a microtech too if that makes any difference, since u mentioned the ECU. and i also noticed that ifi take off my oil filler cap there is a thick amount of smoke in the tube. looks white. im guessing from gas.

 

Everything you wanted to know and more about proper grounding and the 3800 RPM studder

http://aaroncake.net/RX-7/grounding.htm

 

Whats your oil pressure at now?

 

im not sure. but i did just change my oil for thecolder months and notced it was greenish and smelt like a gas tank. i think that was the major issue... ill find out tomoro

 

Sorry, I should have been more specific in my post. I was replying to the OP about the 3800rpm hesitation and grounding to get it to go away.

 

well it still smokes... not AS bad tho. oil pressure is sub 35 psi on my in-dash gauge at IDLE. thats al i can go by for now.....

 

You have some problems.

The white stuff is water mixing with the oil. It might only be condensation, but it would take all very long time to build up enough..Or the other cause would be your leaking a super small amount of coolant in the crankcase oil. Not very good.

If the grounds are not 100% you will get unburnt fuel and oil mixtures from lack of spark/ combustion or just in general lack of communication between sensors and ecu. This will cuase the excess in the exhaust system to build up and when it gets hot enough it starts to burn./smoke..


Put it this way.. if its burning oil inside the exhaust manifold, and the entire inside of exhaust system is coated with this mixture, you will need to get the entire system to the exhaust tip as hot as the manifold to burn off the oil and such..So its going to be tough and time consuming to get the exhaust that hot..all the way back..super hard with it pushing more oil in the system also.

 

just a question did you Recalibrate your mechanical OMP?
or even test to see what volume its putting out