3S-GTE JDM 3rd Gen Turbo Engine Oil catch spraying oil

2fast4u · 03-09-2009, 08:29 PM

So my oil catch can starts spraying oil when boosting above 5psi, then sometimes ill get it up to 12 and it won't do anything. My catch can is cracked but tapped up tight. I need to get a new can, but what is causing all the pressure buildup, anyone had any experiences with this? Compression tested fine in all 4 cyls. Is it my rings? The pcv valve seems to be working. God I hope it's not the rings...

ebouwman · 03-09-2009, 09:58 PM

Quote:

Originally Posted by 2fast4u

So my oil catch can starts spraying oil when boosting above 5psi, then sometimes ill get it up to 12 and it won't do anything. My catch can is cracked but tapped up tight. I need to get a new can, but what is causing all the pressure buildup, anyone had any experiences with this? Compression tested fine in all 4 cyls. Is it my rings? The pcv valve seems to be working. God I hope it's not the rings...

If the compression test looked fine then it's not the rings cause that's what a compression test is testing, is the valves and rings.

What do you mean by your oil catch though? Not familiar with the turbo setup

2fast4u · 03-10-2009, 08:58 AM

In the PCV system there is a can to catch oil inline with the pcv hose to the intake, so under boost if it starts sucking oil through the pcv it won't be sucked into the intake, instead it's separated by the catch can and routed back to the crankcase.

2fast4u · 03-10-2009, 03:05 PM

Also anyone know if there is a secondary pcv system to equalize the pressure between the VC and the crankcase or does the primary do both?

ebouwman · 03-10-2009, 03:33 PM

it sounds like your having issues with the pcv valve, from what i understand it keeps the the boost pressures from blowing back into the crankcase, and your oil catch can being along the way would be venting away the excess pressure.

Don't know where the valve is located on that car, but that could be the problem

2fast4u · 03-10-2009, 03:42 PM

Thanks, anyone else? On the opposite side of the VC from the oil catch (pass side of engine bay) there is a hose and looks like a valve coming off the VC. What is it? Could it be another part of the pcv system like I stated earlier?

Landjet · 03-10-2009, 06:14 PM

The pcv valve is on the passenger side near the oil fill cap. If the valve sticks in the open position it will pressurize the crankcase. You could try removing the valve from the valve cover(still attached to the hose) and try to see if you are still blowing oil.

2fast4u · 03-11-2009, 08:08 PM

I'm taking it in to the shop I'm interning at, we're gonna screw with it, I'll tell you guys what I come up with. The catch can might be clogged too. I just dumped the oil out, didn't attempt to see if it was clogged. Kinda hard to see. Maybe I'll use some compressed air to blow **** out if there is any. If anyone advises against using compressed air cause it will screw something up, let me know.

Landjet · 03-12-2009, 03:07 PM

The oil should be draining back into the bung in the cylider head (under the intake/head flange).

MANDALAY · 03-12-2009, 07:31 PM

I would be appreciative if someone can take a photo where the line from the Catch can DRAIN ( smaller hose ) returns back TO ENGINE.
Gen 3 with OEM CATCH cAN

T67mr2 · 03-14-2009, 07:09 PM

what exactly was your compression in each and every 1 of your cylinders???........u would be surprised...i got Gen3 JDM 3sgte in my 91 turb....i had the hose (from the catch can goin bac through the air intake) vented and after a few hard laps i would see oil splatter...didnt think to much of it untill i ran a few more laps and then started to see exhaust smoke cummin out that same hose...compression test came up 160,160,130,160......turned out i cracked #1,2 and 3 pistons ringlands (over boosted off a T67 Greddy turb, hit 27PSI)....2 much blow-by from a worn engine MIGHT be your problem

2fast4u · 03-15-2009, 02:00 AM

Well the highest boost ever ran was 20psi on race gas. stock ct20b, and about 69k on motor, I kinda doubt it but maybe. Your case is quite a bit more extreme but maybe, I hope not.

03-09-2009, 08:29 PM	#1 (permalink)
2fast4u Speed Racer Join Date: Nov 2006 Location: Daytona Beach, FL Posts: 577 Thanks: 21 Thanked 10 Times in 10 Posts iTrader Rating: (1/100% )	Oil catch spraying oil So my oil catch can starts spraying oil when boosting above 5psi, then sometimes ill get it up to 12 and it won't do anything. My catch can is cracked but tapped up tight. I need to get a new can, but what is causing all the pressure buildup, anyone had any experiences with this? Compression tested fine in all 4 cyls. Is it my rings? The pcv valve seems to be working. God I hope it's not the rings...

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03-10-2009, 08:58 AM	#3 (permalink)
2fast4u Speed Racer Join Date: Nov 2006 Location: Daytona Beach, FL Posts: 577 Thanks: 21 Thanked 10 Times in 10 Posts iTrader Rating: (1/100% )	In the PCV system there is a can to catch oil inline with the pcv hose to the intake, so under boost if it starts sucking oil through the pcv it won't be sucked into the intake, instead it's separated by the catch can and routed back to the crankcase.

03-10-2009, 03:05 PM	#4 (permalink)
2fast4u Speed Racer Join Date: Nov 2006 Location: Daytona Beach, FL Posts: 577 Thanks: 21 Thanked 10 Times in 10 Posts iTrader Rating: (1/100% )	Also anyone know if there is a secondary pcv system to equalize the pressure between the VC and the crankcase or does the primary do both?

03-10-2009, 03:33 PM	#5 (permalink)
ebouwman Curve Hugger Join Date: Jan 2009 Location: BC Posts: 1,600 Thanks: 19 Thanked 51 Times in 51 Posts My Google Map iTrader Rating: (0/0% )	it sounds like your having issues with the pcv valve, from what i understand it keeps the the boost pressures from blowing back into the crankcase, and your oil catch can being along the way would be venting away the excess pressure. Don't know where the valve is located on that car, but that could be the problem

03-10-2009, 03:42 PM	#6 (permalink)
2fast4u Speed Racer Join Date: Nov 2006 Location: Daytona Beach, FL Posts: 577 Thanks: 21 Thanked 10 Times in 10 Posts iTrader Rating: (1/100% )	Thanks, anyone else? On the opposite side of the VC from the oil catch (pass side of engine bay) there is a hose and looks like a valve coming off the VC. What is it? Could it be another part of the pcv system like I stated earlier?

03-10-2009, 06:14 PM	#7 (permalink)
Landjet murdered out Join Date: Mar 2008 Location: Trussville,AL Posts: 38 Thanks: 0 Thanked 2 Times in 2 Posts iTrader Rating: (0/0% )	The pcv valve is on the passenger side near the oil fill cap. If the valve sticks in the open position it will pressurize the crankcase. You could try removing the valve from the valve cover(still attached to the hose) and try to see if you are still blowing oil.

03-11-2009, 08:08 PM	#8 (permalink)
2fast4u Speed Racer Join Date: Nov 2006 Location: Daytona Beach, FL Posts: 577 Thanks: 21 Thanked 10 Times in 10 Posts iTrader Rating: (1/100% )	I'm taking it in to the shop I'm interning at, we're gonna screw with it, I'll tell you guys what I come up with. The catch can might be clogged too. I just dumped the oil out, didn't attempt to see if it was clogged. Kinda hard to see. Maybe I'll use some compressed air to blow **** out if there is any. If anyone advises against using compressed air cause it will screw something up, let me know.

03-12-2009, 03:07 PM	#9 (permalink)
Landjet murdered out Join Date: Mar 2008 Location: Trussville,AL Posts: 38 Thanks: 0 Thanked 2 Times in 2 Posts iTrader Rating: (0/0% )	The oil should be draining back into the bung in the cylider head (under the intake/head flange).

03-12-2009, 07:31 PM	#10 (permalink)
MANDALAY Beams Owners Group Join Date: Feb 2007 Location: victoria AUSTRALIA Posts: 4,210 Thanks: 136 Thanked 112 Times in 107 Posts My Google Map iTrader Rating: (6/100% )	I would be appreciative if someone can take a photo where the line from the Catch can DRAIN ( smaller hose ) returns back TO ENGINE. Gen 3 with OEM CATCH cAN

03-14-2009, 07:09 PM	#11 (permalink)
T67mr2 No Skills Join Date: Jan 2009 Posts: 8 Thanks: 0 Thanked 0 Times in 0 Posts iTrader Rating: (0/0% )	what exactly was your compression in each and every 1 of your cylinders???........u would be surprised...i got Gen3 JDM 3sgte in my 91 turb....i had the hose (from the catch can goin bac through the air intake) vented and after a few hard laps i would see oil splatter...didnt think to much of it untill i ran a few more laps and then started to see exhaust smoke cummin out that same hose...compression test came up 160,160,130,160......turned out i cracked #1,2 and 3 pistons ringlands (over boosted off a T67 Greddy turb, hit 27PSI)....2 much blow-by from a worn engine MIGHT be your problem

03-15-2009, 02:00 AM	#12 (permalink)
2fast4u Speed Racer Join Date: Nov 2006 Location: Daytona Beach, FL Posts: 577 Thanks: 21 Thanked 10 Times in 10 Posts iTrader Rating: (1/100% )	Well the highest boost ever ran was 20psi on race gas. stock ct20b, and about 69k on motor, I kinda doubt it but maybe. Your case is quite a bit more extreme but maybe, I hope not.