Jump to content
SAU Community

Urgent Help Please

mr_rbman

By mr_rbman,
in Engines & Forced Induction

 Share

Recommended Posts

mr_rbman Grand Master

mr_rbman

Posted
Posted

well last night i went to leave for work and got about 20 metres down the road and couldn't see out my rear view mirror from all the WHITE smoke so naturally i quickly pulled a u-turn and put the car in the garage and took the girlie's car to work as i was running late as it was!

Now i'd just put a new catch can on that i'd made and i just presume i didn't vent it properly (was trying to make it legal) which caused this mess!

Now this morning i put my old catch can back on which is vented with a filter and a few small 1/8 holes! I took it for a drive and it was still smoking but not quite as bad! I'm hoping this is just oil that was still in the exhaust etc burning off??? i pulled back into the garage and there was oily smoke coming from the engine bay (mainly around the turbo, can see slight oil marks/stains where the dump pipe meets the exhaust housing) and exhaust!

Basically have i stuffed something (can't see how?) or do i just need to vent my new catch can and wait for the oil to get out the system? I was reading somewhere that its illegal to have a 'venting' catch can but if you don't vent it properly does this problem i'm having happen or have i made it or hooked it up wrong?

Cheers in advance!

Link to comment
https://www.sau.com.au/forums/topic/127654-urgent-help-please/
Share on other sites
TurboX Mentor

TurboX

Posted
Posted

Have done this a few times as well and it seems to clear up fairly quickly and I dont think it will be damaged. :(

Probably idle it off in the driveway as some mongrel will see the smoke if your on the road and dob you in to EPA.

Your breather should by rights vent back into the airbox intake.

jazza08 Mentor

jazza08

Posted
Posted

I had the same problem, the catch can has a breather in the system... should work ok, are you still getting oil smoke? You may of damaged the oil seal on the turbo? Go have a look at your intercooler, you should find oil deposits in there! Clean it out with metho/kero (ie drain it n empty until it runs clean, DONT tip the cooler upside down as the oil will run through it lol) and clean the pipes out then go for a hard drive to burn any oil sitting in the zorst and have another look to see if that helps, personally im still abit stuck with it all but im tryin the cooler cleaning next week.

mr_rbman Grand Master

mr_rbman

Posted
  • Author
Posted
I had the same problem, the catch can has a breather in the system... should work ok, are you still getting oil smoke? You may of damaged the oil seal on the turbo? Go have a look at your intercooler, you should find oil deposits in there! Clean it out with metho/kero (ie drain it n empty until it runs clean, DONT tip the cooler upside down as the oil will run through it lol) and clean the pipes out then go for a hard drive to burn any oil sitting in the zorst and have another look to see if that helps, personally im still abit stuck with it all but im tryin the cooler cleaning next week.

i hope its not the turbo cause i've been through that with my old turbo and my new 35/40 is only 2000kms old so it better not be that!, i'm 99% certain its the catch can because it only happened when i installed the new catch can!

r33_racer Grand Master

r33_racer

Posted
Posted

The catch can needs to vent to atmo or somewhere...crankcase pressure will build up and bad breath will come out somewhere else. Std breather goes back into intake pipe so instead just put a little filter off a hose tail on your catch can somewhere and let it breath off that.

mr_rbman Grand Master

mr_rbman

Posted
  • Author
Posted (edited)
The catch can needs to vent to atmo or somewhere...crankcase pressure will build up and bad breath will come out somewhere else. Std breather goes back into intake pipe so instead just put a little filter off a hose tail on your catch can somewhere and let it breath off that.

this is what i thought but i heard that venting into the atmosphere is illegal with catch cans? I have my old catch can back on (the one in the pic which vents via a filter!) It seems to be fine, just getting all the oil out the system now is the pain staking part. Mind you it is still blowing a bit of smoke but nowhere near as much!

Edited by mr_rbman
mr_rbman Grand Master

mr_rbman

Posted
  • Author
Posted

just took it for a quick hard drive and it only smokes a tiny bit driving normally but when it hits boost the smoke is much worse! To me that sounds like the turbo but considering its new and i changed the catch can and all this happened i'm still lenaing towards the catch can being the source of the problem???????????????????

mr_rbman Grand Master

mr_rbman

Posted
  • Author
Posted

just took the cooler off and there's a bit of oil in that which is probably causing the white smoke when the engine hits boost! Currently cleaning it now and will hopefully get it back on tonight fingers crossed!

TTT Grand Master

TTT

Posted
Posted

Latest ZOOM has a great little article regarding crank case pressure and the ins and outs of oil catch cans and oil breather cans.

There was also a thread here recently where someone had a similar issue after putting on a new can and using wrong size hoses.

I think that thread started off saying “hi flow turbo blown” or something (because of the white smoke)

Even after fixing, there was a bit of smoke as the extra pressure had pushed oil past the turbo seals and so forth and was burning in the exhaust for a bit.

Hope that is all you have done and that nothing is broke.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • 25RBGT
      Got this r31 silhouette flood car to rebuild.

      By 25RBGT · Posted

      So we have most the interior back in, and for the first time with one OEM speaker hooked up. The 31 is running, driving and now tunes!!! Hahaha yet another step for the sub that sat 10m under for two weeks!!! unbelievable really 👌 lots of love work and not giving up on her. Seen so many youngsters part way less, and in way better condition. I’m stubborn, thinking another problem is just a hurdle to overcome, One at a time. IMG_9277.mov
    • TurboTapin
      CD009 RB Conversion

      By TurboTapin · Posted

      That is correct. I'm using a modified ABS ring and a ZF speed sensor on my rear diff for speed input. I'm running a Haltech ecu. 
    • TurboTapin
      R32 GTST - 600KW+ RB28/CD009 Build

      By TurboTapin · Posted

      Been busy with the newborn. We originally thought we were going to go for a third, but we're good with two lol. He's starting to actually sleep now so I've had some energy to work on the car. It's been parked away in the garage since late November due to winter.  I went ahead and redid all my head oil drains. I originally had my front and rear head drain going into the same pipe but have since split them up. I also added an Ethanol content sensor to get ready to run E85 this summer. Tossed it on my return line. Sensor sits nicely under my intake manifold.    I also have a lot of parts that came in for my rear end. I'll be swapping over to a 3.3 final drive and doing the GK teck anti squat mod. While the rear subframe is off, I'll also change every bushing. We're planning on buying another house soon with the condition that I get at a minimum a 2 door garage, so I'll wait to have more room for this. Now onto the strange things that recently happened... After changing the lower rad hose (It had been sitting in my cabinet for well over a year and was the last hose I had to replace), I let the car idle in the garage to bleed my coolant. After running for a few minutes, it started missing. Got much worst within a minute or two and then stalled and would not restart. My crank sensor decided to crap itself. No damage, no explanation, just died. I went ahead and replaced it with another ZF sensor but the heavier duty stainless model with a shield. Tossed that in and started right up. Has anyone else seen this? I hate when things fail without cause. Luckily this was a blessing in disguise... This lead me to recheck my timing. It seems I may have had a beer or two the last time I had set my TDC angle as I was off exactly 5 degrees... I miscounted a line haha. I was running 5 degrees less then commanded. It's a little embarrassing but helps explain why my dyno operator seemed to think I should be making more then 478rwkws.        
    • hypergear
      Hypergear Turbochargers and High flow Services Development thread

      By hypergear · Posted

      Sharing results from recent Liberty Walk R35 GTR, since they are still considered as somesort of a V36 Skyline. We do them turbos too. This are high flowed SS-1 models with ball bearing conversion done.  Car have managed to pull 485awkws @ 20Psi so far pushing limitations of factory built engine. The build list for R35 GTR enthusiasts as follow : HyperGear high flowed stock turbos in SS1 (G25-660 specs) Custom titanium intake pipes. Vspec performance titanium front pipes. Vspec performance 4" titanium exhaust. Upgrade fuel pumps. 1200cc injectors. Ignition coilpacks Hks intake plenum. Hks intercooler piping. Greddy intercooler. Greddy bovs. Top-secret coolant reservoir. Emtron ecu. Straight E85. Built gear box.  
    • Shoota_77
      Shoota's R33 GT-R RB30/26

      By Shoota_77 · Posted

      Nah no bearings, just slip fit.  Would be a reasonably challenging but not impossible job to modify it to run bearings but I'm hoping that's not necessary as I may have well built one myself if I end up spending hours modifying it!
×
×
  • Create New...