oil in my intercooler piping
 

oil in my intercooler piping, I was pulling it out to change all my couplers and there was a siginificant amount of oil, is this normal? I have a rotary extreme vmount.
thanks,
Eric

bumpy

i had oil in my intercooler piping and it was from oil leaking from my turbos.

it all kinda depends. a little bit of oil can be normal, but your turbo could be on its way out or in need of a rebuild. if there's oil in your pipes, the oil seals on the turbo are blown or on there way there.

you should clean all of your pipes out and flush the intercooler. once that's done check it out a week later to see how bad the turbo is blowing by oil

i had this too. if you look on your oil filler neck there is a nipple that faces down and there is a hard line connected to it. if you then look on your front turbo intake elbow there is another hard line going to it. it releases the pressure from the crank case to the intake system and which in turn blows oil into it.. as long as its not alot and just a residue or so then it should be fine.

94tkt, is pointing out if you track your car oil sloshes up the neck which both get injested via the intake and pipes it to the turbo intake. there was a huge thread on the catch cans which on some cars solved the problem.

I just bought the 99spec turbos not to long ago, maybe only has about 4k miles or so. Maybe a catchcan will solve this problem.

its actually a design flaw here you can read about it in this link http://www.geocities.com/MotorCity/...55/hosetest.pdf

The link isnt working for me but you can read about it in the vaccum hose section of the 3rd gen archives.

+1 for 94tkt

In most cases it's not a mechanical problem, merely poor PCV (positive crankcase valve) system design. Under hard g loads, either lateral or under acceleration and braking oil can migrate up the oil filler neck. Wih oil up the filler neck, as soon as the engine goes into vacuum (lift throttle) the intake will suck that oil right up out of the filler neck and into the intake (UIM) and or the intake pipeing and IC as there is a vacuum tap formthe filler neck to the upstream end of the intake (prior to the turbo)

A link to my can install - did not solve my problem BTW.
http://reganrotaryracing.tripod.com/catch.htm
also common to what hard core track junkies will see. A pic of my IC at the bottom of the page:
http://www.negative-camber.org/crispyrx7/gt35rpage3.htm
Search the forum as there is a dozen+ page thread on the issue.

A VERY common mistake in the early days, clueless Mazda mechancis would diagnose this as blown turbo seals and replace perfectly good turbos. Not to say this can't happen but be sure it is a real issue and that you aren't chasing a ghost.
Regards,
Crispy

I had/have this same problem. Before and after a new turbo install.... Obviously I fell victim to chasing that ghost. Next is the catch-can fix to see if that helps, but I have not been tracking the car, this happens under normal driving conditions....

How do I solve this problem?

Damn, me too!
 

I had oil in my intercooler pipes and some oil use to leak frome the intake pipes from the turbo's so i replaced them and i still seem to burn alot of oil. Every time i start it up in the morning in neutral, crap loads of smoke comes out with the old set and new set of twins. (the new set of twins i got was supposeable rebuilt). could the pcv also cause lots of blue smoke to come out during start up and go away during opperating temps.

Mine cant be the 99spec turbos, I visually inspected them and they seem to be fine, vaccume and boost are both normal. Chuck at Rotary extreme built this car, it was his final one. I only have about 4K miles on the motor and the turbos.

Worn emgine internals will also cause excess blowby (side seals and oil control ring seals) and oil pan pressure leading to more oil being pushed out through the filler neck and PCV system. Depending on engine age and condition it can happen under normal street driving as well.
Sorry guys and welcome to "the club"
Crispy

I believe this is what you're looking for:

https://www.rx7club.com/3rd-generation-specific-1993-2002-16/oil-intake-fix-591228/

-s-