Oil In The Intake

pac663 · 12-01-2001, 03:11 PM

I pulled the upper intake and saw oil around the lower openings,then I checked the upper and it was lightly coated with oil. I changed the PCV,but the old one was still working. Is this a bad sign? There's only 46,500mi. on it. Thanks guys!

LX5liter · 12-01-2001, 05:27 PM

I could be mistaken but I think this is a common happening with the Eaton and screw type blowers. When you are decelerating it will actually pull oil up through the valve seals and it pools in the intake.

NewAge 5.0 · 12-02-2001, 10:51 AM

Mine is doing the same and I am NA No Blower! oil in the upper intake runners.. nothing major like dripping out just a coating.. what causes this.. anyone know??

exgmguy · 12-02-2001, 06:55 PM

Your lower intake gaskets may be leaking, pulling oil from the lifter valley.

That's what happened to me anyway.

Rebel79 · 12-03-2001, 12:41 PM

I had oil in the intake only because my vacuum lines were routed wrong with my supercharger. Plus putting a breather helps too!

pac663 · 12-03-2001, 04:07 PM

I have a breather and I hooked up everything according to the instructions. After speaking with a friend who has a turbo,he says his also has traces of oil and he's a mechanic.

bosco · 12-04-2001, 12:48 AM

I have this problem as well, but in an N/A car, i have the mods listed below. We have taken the intake off twice. The first time we took it off, it was b/c the car was smoking, and burning oil, so we took the intake off, saw oil in the intake runners and all over the gasket, so we replaced it, sealed it up real good, then the problem kept occuring, we took the whole motor apart, replaced the rings, (whiche were only a few months old) checkd the rocker arm studs, replaced the valve stem seals, sealed up the intake real good, and about 600 miles later, there it goes again, any thoughts? We built the motor in late may, early june, and took it apart in november, to correct this problem, but still no result. We did notice that both times we took the engine apart, there was quite a bit of oil in the intake, any idea how this is, the car is cuarberated, and the pcv system, it does leak a little bit of oil onto the valve covers, but there is no hose leading to the air filter, id appreciate the help, this problem has been driving me crazy thnx

NewAge 5.0 · 12-04-2001, 01:01 AM

Mine does it too like i said before, BUT mine also pulls vacume at the breather.. I have pcv and everything, and a valve cover breather(that pulls vacume) I dont know I thought it was intake gaskets leaking.. maybe i dunno.. should the breather be sucking air IN? help me out here guys.. Thanx

12-01-2001, 03:11 PM	#1
pac663 Registered Member Join Date: Aug 2001 Location: Anaheim,CA Posts: 77	Oil In The Intake I pulled the upper intake and saw oil around the lower openings,then I checked the upper and it was lightly coated with oil. I changed the PCV,but the old one was still working. Is this a bad sign? There's only 46,500mi. on it. Thanks guys! __________________ 92GT KB Ram Air, C&L 76mm MAS, 70mm TB, KB(Blowzilla) 8psi, E-Cam, Headers,Stock Cats, Borla mufflers,3.73's "Dont Do Drugs-You Might Buy An Import"

12-01-2001, 05:27 PM	#2
LX5liter dude5l Join Date: May 2001 Location: Grande Prairie, Alberta, Canada Posts: 603	I could be mistaken but I think this is a common happening with the Eaton and screw type blowers. When you are decelerating it will actually pull oil up through the valve seals and it pools in the intake. __________________ Good luck! Brad R. 1992 L.X. 5.0 coupe MODS: A few little bolt ons New Best time ...11.60 @ 128 mph @ 2000+ ft altitude. Rice Haters Club member #39 Users rides #2542

12-02-2001, 10:51 AM	#3
NewAge 5.0 Registered Member Join Date: Mar 1999 Location: Sanford NC USA Posts: 155	Mine is doing the same and I am NA No Blower! oil in the upper intake runners.. nothing major like dripping out just a coating.. what causes this.. anyone know?? __________________ 88 Hatch 10.60's @ 130 89 Hatch Not as fast but holds its own

12-02-2001, 06:55 PM	#4
exgmguy Registered Member Join Date: Feb 1999 Location: Utica, Michigan Posts: 2,631	Your lower intake gaskets may be leaking, pulling oil from the lifter valley. That's what happened to me anyway. __________________ 1988 Mustang GT stock bottom 302, C4 10.9 @ 128 with 8 psi of Novi 1000 boost!----STOLEN 1989 Mustang notchback Warmed up 306 with a Procharger.

12-03-2001, 12:41 PM	#5
Rebel79 News Editor Join Date: Apr 1999 Location: Concord, CA Posts: 2,101	I had oil in the intake only because my vacuum lines were routed wrong with my supercharger. Plus putting a breather helps too! __________________ Scott Halihan, News Editor The MustangWorks Magazine 1994 Supercharged Mustang Cobra Rebel Racing. Home of Bay Area Mustangs

12-03-2001, 04:07 PM	#6
pac663 Registered Member Join Date: Aug 2001 Location: Anaheim,CA Posts: 77	I have a breather and I hooked up everything according to the instructions. After speaking with a friend who has a turbo,he says his also has traces of oil and he's a mechanic. __________________ 92GT KB Ram Air, C&L 76mm MAS, 70mm TB, KB(Blowzilla) 8psi, E-Cam, Headers,Stock Cats, Borla mufflers,3.73's "Dont Do Drugs-You Might Buy An Import"

12-04-2001, 12:48 AM	#7
bosco Registered Member Join Date: Nov 2001 Location: austin TX Posts: 115	I have this problem as well, but in an N/A car, i have the mods listed below. We have taken the intake off twice. The first time we took it off, it was b/c the car was smoking, and burning oil, so we took the intake off, saw oil in the intake runners and all over the gasket, so we replaced it, sealed it up real good, then the problem kept occuring, we took the whole motor apart, replaced the rings, (whiche were only a few months old) checkd the rocker arm studs, replaced the valve stem seals, sealed up the intake real good, and about 600 miles later, there it goes again, any thoughts? We built the motor in late may, early june, and took it apart in november, to correct this problem, but still no result. We did notice that both times we took the engine apart, there was quite a bit of oil in the intake, any idea how this is, the car is cuarberated, and the pcv system, it does leak a little bit of oil onto the valve covers, but there is no hose leading to the air filter, id appreciate the help, this problem has been driving me crazy thnx __________________ '87 coupe, 308, world product windsor jr. heads, comp cams 220@.050/.512 @110 deg., roller cam,crane full roller rockers, 4bbl 600cfm holly carb,1 inch spacer, wiend aluminum intake, pullies, msd distributer/ignition, 1 5/8 bbk shorties, off road h-pipe 2 chamber flows, 3.73 posi rear end, P.S.T control arms, steeda tri-ax shifter, t-5, auto meter guages, and more to come (hopefully )

12-04-2001, 01:01 AM	#8
NewAge 5.0 Registered Member Join Date: Mar 1999 Location: Sanford NC USA Posts: 155	Valve Cover Breather SUCKS Mine does it too like i said before, BUT mine also pulls vacume at the breather.. I have pcv and everything, and a valve cover breather(that pulls vacume) I dont know I thought it was intake gaskets leaking.. maybe i dunno.. should the breather be sucking air IN? help me out here guys.. Thanx __________________ 88 Hatch 10.60's @ 130 89 Hatch Not as fast but holds its own

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