I need reonce urgently your help!!!

I have this problem this my FC RX7 YEAR OF CONSTRUCTION 87 extremely smokes. namely after burnt one oil.

If I open the oil fill in and openly leaves it becomes much better however it is not away 100%.

I have another turbolader and emmisons parts are away.

What this could be. do I have a little bit too much closed?

no matter whether engine is cold or warm he jumps always immediately---> no problems, only smoke!!

Turbocharger is new!!!

Sorry for my englisch, i come from Austria/ Vienna!!!!
Thanks a lot for your help!!!!

 

Hmm, hard to understand. Maybe someone over there that speaks a little better English will chim in. Beefy.....

 

too much oil preasure going into turbo or you need a vent on crank case. Then give it time to burn off all the oil.

 

The fact that opening the oil fill helps tells me that there is too much crankcase pressure. When you removed the emissions stuff did you cap off the crankcase ventilation port on the oil filler? On those engines there should also be one on the middle iron, in the back. Can you post pics of the engine bay?

btw, are you using one of those translator programs?

 

yes, I have closed everything. then i tried with open oil fill,---> much better but not OK!
The one on the middle iron is still closed.

Thanks for your help!

 

i take some picture tomorrow!!

 

remember that the smoke might not go away immediately after opening the oil fill...there might still be oil that would slowly get burnt off...i am having a smoking problem right now but i read that vacuum is needed to assist the venting(in my setup it is left open)....so the vent line must be plumbed to the intake of the turbo or to the intake manifold with a PCV valve...i have also read a thread where someone tapped a 3/4" fitting in the oil filler neck for venting...i will get the vent line plumbed back to the intake and let you know how it works and if the smoking stops in my car...

 

pictures come at evening.

but i have found some mistake. i have closed too much ventilaton ports( oil fill vent closed, middle iron vent closed) . i had no PCV valve installed.
now i will install that an then i will test it..

see you later!!

 

so guys,

i have installed the PCV and i opened some ventilation port from the middle iron.
is it much better but not real good. it comes a little smoke from the exhaust. And it smells like oil!

 

How did you set up the PCV valve? On the FC, the factory hose routing combines the crankcase ventilation with the evaporative emissions system.



You can see that the 2nd gen PCV valve (labeled #2 in diagram) has 3 ports. The top port connects to somewhere before the throttle plates. There are a couple ports on the UIM that work for this. The left port connects to manifold vacuum. The right port connects to the crankcase breather on the oil filler. The crankcase breather on the middle iron runs with a T to the charcoal canister and back to the intake.

That is the factory configuration on the FC. Connecting the two breather ports to a catch can and eliminating the PCV can prevent excessive crankcase pressure under normal circumstances.

The FD has a different PCV valve configuration. It has 2 ports and is completely separate from the charcoal canister/evaporative emissions system. See attachment. Later FD's didn't even have a PCV valve.

As I already said, if you open both breather ports on your engine to atmosphere that should take care of oil smoke from crankcase pressure. You probably don't need the PCV valve at all. Does your turbo require an oil feed restricter? It could still be related to the turbo.

 

hey arghx!
my tutbo has stock an restrictor inside the oil inlet.

thans for the diagramm. i found 2 mistakes in my car. Thanks. i will test it tomorrow and report result here.

 

the red lines are the one which i made new. is the one line which is not red important?
i drive after the work 10 kilometers and it smells still by burned oil.
befor i made the vacuumlines, PCV new (red lines on the image) it smokes real strong. the strong smoke out of the exhaust is much better, now.
thanks for your help

nice regards from Austria

 

The one line which is not red is supposed to go to the turbo inlet or atmosphere. It is a vent for the crankcase (blowby vapors) and the charcoal canister (fuel vapors from tank). Did you use a T like in the diagram or did you just connect a line from the charcoal canister to the middle iron?

If you didn't use a T then there is nowhere for the vapors to go under load and that could cause some crankcase pressure. Look on the left side of the diagram. The solid arrows show how the vapor flows when the engine is under load and the PCV valve is closed. See what happens if you put a T in there just like the diagram. If you aren't going to run a hose back to the intake (with a check valve, like stock) then try opening it to atmosphere.

 

today i made a T in the system. I dont found the check valve, so i put some vacuumline only to the atmosphere. Still a little smoke of burned oil.
Tomorrow i will take some picture from my car, maybe you can see some mistakes there.

Thanks for help!!


nice regards from Austria!

p.s. i am soo sorry for my terrible english!

 

Thank for the posts

 

what i have seen today is that my coolant is nearly black! is there some combination with the high pressure in the crank case?

at the evening i will post some picture!

nice regards!

 

so here comes the fotos

here are the vent from the crankcase, fueltank and the middle iron plate:














and here the coolant it was only water, because i want to test befor i fill in coolant solution! it was 20 kilometer in the system and looks like this!