oil in intake plenum

88Saleen · April 24th, 2009, 11:40 AM

So im replacing the gaskets between my upper and lower intake, and i took the cover off of the edlebrock upper intake, and there was a puddle of oil in there. just wondering if thats normal or bad? if so how do i fix it? thinking about removing EGR, does that mean i need to turn my fuel pressure up at all?

1slo5.0 · April 24th, 2009, 11:42 AM

Normal. Not good, but normal. On hard acceleration the oil runs to the back of the lifter valley and is sucked thru the PCV valve into the upper intake. No need to remove your EGR. It isn't going to gain you anything.

flattusmaximus78 · April 24th, 2009, 11:52 AM

Darrel, would putting a check valce somewere help this? I've taken my upper mani off several times and it should be clean as a whistle. But like Darrel said it happens.

1slo5.0 · April 24th, 2009, 12:22 PM

Originally Posted by flattusmaximus78

Darrel, would putting a check valce somewere help this? I've taken my upper mani off several times and it should be clean as a whistle. But like Darrel said it happens.

Probably not because then the vacuum would close the check ball rendering the PCV system useless.

Don't you have a blower on your car flatty? If so then you shouldn't be using a PCV valve. Pressurized crankcase is bad news.

flattusmaximus78 · April 24th, 2009, 06:14 PM

Yessir. I'm not familiarized with pcv systems at all, and I need some edumication on that. BUT, by pressurized do you mean boost going back in the motor through my crank case vent?

1slo5.0 · April 24th, 2009, 08:07 PM

Originally Posted by flattusmaximus78

Yessir. I'm not familiarized with pcv systems at all, and I need some edumication on that. BUT, by pressurized do you mean boost going back in the motor through my crank case vent?

Yes. Use breathers instead of a PCV.

88Saleen · April 25th, 2009, 12:59 PM

what about fuel pressure? do i need to turn it up any because i dont have EGR? it should it not make that much of a difference?

1slo5.0 · April 25th, 2009, 07:40 PM

Originally Posted by 88Saleen

what about fuel pressure? do i need to turn it up any because i dont have EGR? it should it not make that much of a difference?

No you won't need to turn up your fuel pressure because you removed the EGR. I don't understand what the connection is there. Removing your EGR will be a waste of your time unless you remove the EGR spacer as well. If you remove the EGR spacer you will need a delete plate for your throttle linkage to connect to like this one http://www.accufabracing.com/images/CabBracketJ.jpg

Even then you will be successfully making your wallet lighter and not making anymore horsepower or any benefit.

April 24th, 2009, 11:40 AM	#1
88Saleen Enthusiast 1988 Mustang Join Date: Apr 2008 Location: Grand Blanc, Michigan Posts: 832 iTrader: 0 reviews	oil in intake plenum So im replacing the gaskets between my upper and lower intake, and i took the cover off of the edlebrock upper intake, and there was a puddle of oil in there. just wondering if thats normal or bad? if so how do i fix it? thinking about removing EGR, does that mean i need to turn my fuel pressure up at all?

April 24th, 2009, 11:42 AM	#2
1slo5.0 MM Ninjas! 1990 Mustang LX 9.36@143 mph Join Date: Jan 2006 Location: North Fond du Lac, Wisconsin Posts: 11,375 iTrader: 1 reviews	Normal. Not good, but normal. On hard acceleration the oil runs to the back of the lifter valley and is sucked thru the PCV valve into the upper intake. No need to remove your EGR. It isn't going to gain you anything. __________________ My daily driver has 16 cylinders and 4400hp @ 1000 rpm.... ***1988 Mustang GT - Stock....almost

April 24th, 2009, 11:52 AM	#3
flattusmaximus78 I Post Entirely Way Too Much 1993 5.ohhhh 12.97 @140mph Join Date: Apr 2006 Location: Gatorland Posts: 6,122 iTrader: 3 reviews	Darrel, would putting a check valce somewere help this? I've taken my upper mani off several times and it should be clean as a whistle. But like Darrel said it happens. __________________ 02 Pewter z28, hoosiers/lid/exhaust/spray...125mph 1993 gt Sold, already missed --Moates Quarter horse $225-- --Cobra intake $150-- --tremec 3550 bell and shifter $1100--

April 24th, 2009, 06:14 PM	#5
flattusmaximus78 I Post Entirely Way Too Much 1993 5.ohhhh 12.97 @140mph Join Date: Apr 2006 Location: Gatorland Posts: 6,122 iTrader: 3 reviews	Yessir. I'm not familiarized with pcv systems at all, and I need some edumication on that. BUT, by pressurized do you mean boost going back in the motor through my crank case vent? __________________ 02 Pewter z28, hoosiers/lid/exhaust/spray...125mph 1993 gt Sold, already missed --Moates Quarter horse $225-- --Cobra intake $150-- --tremec 3550 bell and shifter $1100--

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April 25th, 2009, 12:59 PM	#7
88Saleen Enthusiast 1988 Mustang Join Date: Apr 2008 Location: Grand Blanc, Michigan Posts: 832 iTrader: 0 reviews	what about fuel pressure? do i need to turn it up any because i dont have EGR? it should it not make that much of a difference?

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