Oil in spacer problem.

[Black 93 Fox]

I am having a problem with oil in the middle of the intake between the upper and lower. I had this problem befor I even put the spacer on the gasket in the middle of the intake was wet. I finaly just gave up on it then a couple weeks ago I put a 1inch spacer on the intake. Then today I noticed the whole spacer was soaked at frist I thought it was fuel but there is no way it would reek of fuel. I took the upper off and took some photos(below) I think it is coming up threw in the PVC hose and getting sucked in what would cause this and how do I fix it?

The top of the spacer is soak

Notice how its came all the way threw the side of the spacer.

 

[sgarlic]

I think I'd rig up an air/oil separator between where the PCV hose goes from the valve cover to the plenum.

 

[HISSIN50]

An air/oil separator or line-restrictor would probably help. I run the former.

 

[Black 93 Fox]

But the oil isnt coming from the valve cover hose its coming from the back of the intake hose where is the groment and filter are at isnt that the pcv? Should I put a oil separator on that line? The hose coming from the valve cover is bone dry while the one on the back of the intake is soaked with oil.

 

[HISSIN50]

But the oil isnt coming from the valve cover hose its coming from the back of the intake hose where is the groment and filter are at isnt that the pcv? Should I put a oil separator on that line? The hose coming from the valve cover is bone dry while the one on the back of the intake is soaked with oil.

Correct, the PCV valve line is the one that gets the separator.
The line up top (mine is from the oil filler to the TB) is to allow clean air back into the crankcase (it does help expel crankcase pressure at WOT, but you are not seeing much contamination from that).

Good luck.

 

[sgarlic]

Oh yeah.. sorry was thinking modular PCV there.

 

[vristang]

The seperator should help. May be worthwhile to install a restrictor on the TB/VC hose as well. It did help me a little.

It may also be worth double checking the torque on the upper intake when you are done, and after driving it. The compressive properties of the phenolic could be inconsistent with oil saturation.

jason

 

[90lxcoupe]

is this a big deal cause my intake is the same way on my car?

 

[vristang]

Unless you get a lot of oil smoke out the exhaust, and have puddles of oil in the intake, Probably not.

But the oil will hurt power and efficiency, by slowing the combustion process.

 

[HISSIN50]

But it is not unusual at all to have oil in the intakes.

 

[Black 93 Fox]

Where should I get the oil seperator at? Thanks for the help guys glad it wasnt a real big problem.

 

[HISSIN50]

Where should I get the oil seperator at? Thanks for the help guys glad it wasnt a real big problem.

One can get a dedicates separator from a vendor like Steeda (they sell one for ~60 bucks). Many use an air tool separator (10-15 bucks). That is what I used. If going that route, I got some 3/8" hydraulic line (fuel/evap line would be better - The hydaulic line is very stiff). The fittings on the separator were 1/4NPT. So I used two 1/4 NPT threaded fittings with 3/8" barbed fittings on the other ends (to hook hoses up). The fittings also made a 90* bend, which was cool since this sits high on the firewall (on the '94).



Good luck.

 

[Black 93 Fox]

Also one more question this is a brand new motor is this common for a new motor? The motor has only 1500 miles on it with all new pistons and bearings.

 

[HISSIN50]

Nope - a fresh motor should not necessarily have blowby (that is where PCV oil comes from). That is a little strange.

 

[vristang]

Also one more question this is a brand new motor is this common for a new motor? The motor has only 1500 miles on it with all new pistons and bearings.

Increased engine vac can pull more oiled air through the crankcase. This is where the restrictor helps on the TB/VC hose. The seperator (I got mine at Home Depot $12) just gets most of the oil out of the air.

There are some problems that can cause it as well, but from my experience they all create large pools of oil in the intake. Click Here to see my intake oil. If the picture is good you can also see smoke billowing out the top of the TB.

I don't think your oil issues are this serious?

 

[Black 93 Fox]

No I diffently dont have oil in my throttle body. I thought it was strange for oil coming out anywhere on a brand new motor. I think the compression did go up to around 10 would that have anything to do with this. Do you guys think this could become a big problem or can I just put the oil seperator in the pcv hose and not really worrie about it. Also what would be the main reason for this oil coming out like this on a brand new motor?

 

[91gt331]

My brother is having the same problem,with a brand new FRPP 347.