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Oil Shooting Out Of Dip Stick

TJR32GTS-T

By TJR32GTS-T,
in General Maintenance

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TJR32GTS-T Proficient

TJR32GTS-T

Posted
Posted

Hey guys, I've noticed abit of oil around the drivers side of the engine bay and it appears that it is coming out of where my dip stick goes in as the dip stick is popped out everytime I check, I am going to order a new dip stick because of heard that the seal can be rooted, what are the other causes of this and how bad can the problems be?

Cheers in advance - trent

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GT32 Community Regular

GT32

Posted
Posted

Yeah, a catch can that hasn't been installed properly can cause abnormal crankcase pressures dude. There's a massive guide somewhere on this forum about all the possible ways to correctly plumb in a catch can. Can't remember the thread name but just search "oil catch can" and it'll find something.

GT32 Community Regular

GT32

Posted
Posted

Here, already done the searching for you :)

http://www.skylinesaustralia.com/forums/topic/129549-oil-catch-can-mounting-and-roughting/

http://www.skylinesaustralia.com/forums/topic/68174-catch-cans-again/page__hl__catch+can

GT32 Community Regular

GT32

Posted
Posted (edited)

If you want to track down a new dip stick as well, go to Jerry again. He got back from Japan last week. I remember him having a crapload of RB dipsticks laying around his workshop.

Edited by GT32
TJR32GTS-T Proficient

TJR32GTS-T

Posted
  • Author
Posted

Sweet dude I'll give him a call, he posts his stuff doesn't he? It's just a pain in the arse driving to epping from the east, I'll check out another place I found this week aswell.

dorifticon Community Regular

dorifticon

Posted
Posted

To be clear, the reason the crank is pressurising is that blow-by is getting past the rings - but, that can happen even on a relatively OK motor. The fact that it's pressurising the crank to the point of the dipstick popping out may be a cause for concern.

The pcv valve (positive crank case ventilation valve) is intended to vent the crank pressure. If the valve is gunked up, it won't be doing that job properly. Not hard to remove and clean, check operation.

An incorrectly plumbed catch can will stop the thing venting if it's effectively plumbed in a loop. Basically you want to leave the factory route between the PCV valve and the inlet tract the same, and just intercept it at some point with a catch can. The basic route should not be altered.

TJR32GTS-T Proficient

TJR32GTS-T

Posted
  • Author
Posted

Cheers dorifticon, that explains alot, because I'm not that mechanically minded but pretty handy with tools how would I go about cleaning the pcv valve? A picture of an rb20 where the valve is would be awesome, I will also post a pic of the current catch can setup,

Cheers

TJR32GTS-T Proficient

TJR32GTS-T

Posted
  • Author
Posted (edited)

ok here are a few pix and a diagram i drew

post-80927-0-70269300-1306129329_thumb.jpg

post-80927-0-08628600-1306129383_thumb.jpg

post-80927-0-68472900-1306129442_thumb.jpg

post-80927-0-55042300-1306129519_thumb.jpg

alot of the oil in the engine bay can be explained by the outlet (which cant be seen in the ppic because it is at the bottom faceing the strut) on the catch can, but some of the spray appears to be from where the dip stick is

Edited by TJR32GTS-T
simpletool Mentor

simpletool

Posted
Posted (edited)

2 issues here:

1. Yeah that catch can isn't plumbed correctly ...but it's more just a case of it being 50% effective (at best) rather than causing a pressure build up. The two cam covers should be connected directly by a hose and the catch can plumbed into the line going out the right hand side of the diagram - between right hand side cam cover and intake pipe.

2. Unless.....the PCV valve isn't working. See the hose coming from the manifold and onto the T-piece? Is the 1-way valve working to stop manifold pressure from entering the cam cover at the t-piece.

Sorry I only know how the R33 one works (which has a 1-way valve) at the cam cover.

ohhh and where does that right-hand side pipe end up? hopefully in the intake before the turbo. ie stock location.

Edited by simpletool
TJR32GTS-T Proficient

TJR32GTS-T

Posted
  • Author
Posted

Ok so if there was a hose bridging the 2 cam covers would it be efficient? They are kinda technically bridged but through the catch can. Also what do u make of the 3rd outlet on the catch can? I would imagine the catch can wouldn't fill because the outlet is at the bottom(see diagram) other setups I have seen have that outlet up the top with some sort of filter.

Also I'm not sure how to check the pcv valve?

Thanks for your input :)

simpletool Mentor

simpletool

Posted
Posted (edited)

There should be not outlet on the catch-can, other than the drain plug. That drain plug has the plug in it....right? Otherwise you are drawing in unmetered air through the catch can.

Anyway, I've put some details in the photo. post-23086-0-67816600-1306199969_thumb.jpg

Dont' mind my other comments, I got a bit carried away.

The PCV valve should only allow air to flow INTO the manifold, but not from the manifold and into the cam cover. You might have to check other threads for the RB20 PCV valve and where it is. you can test by blowing into it each way,

Edited by simpletool

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