Oil oil everywhere

[PaCemkr86]

What valve covers do you have? I had the same issue .
Blocked off pcv valve
TA valve covers with baffles with up right tall metco breathers fixed my oil problem
Does the engine have excessive blow by? Does the engine oil dipstick pop up at the end off a high boost pass?

 

[cruzn57]

Quote:
It does nothing to control blow by under boost and potentially let's manifold pressure leak past it under boost and sucks hot oily blow by vapors into the intake under vacuum which is not desirable in a high performance engine.

if your motor has that much blow by, then you have bigger problems than a PVC can handle.

A PVC is a one way valve, designed to seal under pressure, sure, if you never change it, it could become dirty and leak,
but its purpose it to relieve pressure from the crankcase, and help all the gasket and seals from leaking.
and to burn excess gases that would go into the atmosphere.
all motors have some blow by, and PCV valves were invented to help control blowby,
most blowby is unburned gases that slipped by the rings,
just as your pistons make compression to aid in combustion, they also pressurize the crankcase,
and try to push it (blowby) out anywhere it can, gaskets,seals, vents, etc.
most street driven cars benefit from a PVC valve, and most of the turbo buicks here ARE street driven,
race only cars are a different story, and to compare the two are apples and oranges.

 

[Heisenberg]

Some Loctite Blue 242 on the valve cover bolts helps a lot.
After you clean out the holes with a little carb cleaner or degreaser.

The PCV was created in the mid 60's or 70's to address emissions/ EPA issues about crankcase vapors leaking into the atmosphere.
So - the idea? How bout we run in back through the engine and (try to) burn it?

After just having chased this PCV leaking issue for a week or more - Trust me - most of them leak at even low boost levels.
Depending upon the crappiness level of the brand of PCV.
You'll be surprised at how much boost they leak - and that 11/32" line flows pretty well.
That can't be good.
I ran a full boost test on my entire intake, inlet bell to the TB - and I don't want leak a single molecule of good boost.
And I found plenty of molecules leaking in various places.

If you're going to run a PCV - then I would definitely run an $6 inline 3/8" check valve.

But a catch can is far superior to evacuating the crankcase and keeping the junk out of the intake.
Pull your vacuum block if you want to see even a hint of what is being sucked into your engine's intake.
Trust me - it will be oily underneath.
Some - very oily.

My simple PCV tester is below.
And my not so simple boost tester.

 

[Chuck Leeper]

He said it only leaks under high boost, wouldn't that take the PCV out of that scenario.

The PCV only comes into play while the engine is producing vacuum.
**That's correct. [Unless, as you stated, it leaks when under boost.]

Unless you mean to check it for leaks under boost to make sure it is sealing tight and won't let boost past it.

There are tons of threads on whether to even use the PCV or not. What's your take on that, use one or is it not needed especially if you run your boost in the mid to high 20's.
**I'd use a catch can system, and not worry about the PCV working. [Or not]

 

[Heisenberg]

**I'd use a catch can system, and not worry about the PCV working. [Or not]

It'll leak.I would bet money on it.
They simply aren't designed to hold back 10-20 PSI.
The only question is how much it leaks.

I always sort of wondered what the engineers were thinking on a force fed engine.
I suppose they figured they would evacuate it out the other end -and suck that crap into the inlet bell of turbo.

My PCV tester has proven every brand I have bought leaks - some more so than others.
But they all mostly leak - a lot.
And as I said- you can get some pretty decent flow through that 11/32 hose.
True enough - the PCV seat will restrict a lot of flow - but I can't see in my mind how any of that is good.

If the other guys aren't sold yet - go buy an adjustable filter / regulator at Horrible Freight, a couple of fittings like in my picture, a piece of 11/32 tubing and the PCV valve of your choice - and make yourself a new blow gun.
Because that it is what it behaves like at 20 PSI

 

[dank GN]

I believe I found the issue it is leaking from the back of the intake manifold


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[John Larkin]

http://www.autozone.com/autozone/ac...el-UV-dye-bulk/_/N-255s?itemIdentifier=210225

$7.00. Get a black light bulb and find out where the leak is really coming from. Of course with a Buick, it'll be coming from everywhere. You clean it off with brake clean.

 

[robzombie]

Get a black light bulb and find out where the leak is really coming from. Of course with a Buick, it'll be coming from everywhere. You clean it off with brake clean.

Just cleaned mine today. V/C leaks and turbo drain leaks.

Had to tighten the bolts as they were loose.

The day mine doesn't leak from somewhere is the day I sell the car as it will scare the sh^t out of me!

 

[BEATAV8]

A PCV doesn't keep engine oil clean and dry. Proper operating temperature accomplishes that task. Getting the oil hot causes water and contamination to vaporize, which then exit the engine with the other blow-by gases. Doesn't matter if there's a PCV system or not.

 

[robzombie]

^^^Yea, what he said!!^^^^

 

[captndave737]

I had similar issues in the past. I currently run a stock pcv to catch can to rjc check valve to throttle body. Then, I have the valve covers plumbed together an "T"eed off to a catch can then to the CAI. ZERO issues and the pcv catch can does catch some oil.

Any pictures of your catch can setup?