• Sign Up! To view all forums and unlock additional cool features

    Welcome to the #1 Fiesta ST Forum and Fiesta ST community dedicated to Fiesta ST owners and enthusiasts. Register for an account, it's free and it's easy, so don't hesitate to join the Fiesta ST Forum today!


Help! Oil in my intake

stuntdoogie

2000 Post Club
Messages
2,202
Likes
174
Location
NYC
#1
I opened my hood today and to show a friend and noticed oil on the bottom of my AEM intake filter, heat shield and inside intake tube. It wasnt like running water but some thin coating of oil.
Anyone know what causes that?
 


OP
S

stuntdoogie

2000 Post Club
Messages
2,202
Likes
174
Location
NYC
Thread Starter #4
Yes from inside. And looks like it leaked out onto the heatshield under the filter. I have an aem intake.
 


MKVIIST

5000 Post Club
Staff Member
Premium Account
Messages
5,795
Likes
1,064
#5
Yes from inside. And looks like it leaked out onto the heatshield under the filter. I have an aem intake.
Have you remove the intake tube to see if there is excessive oil buildup on the inside? Have you gotten the filter wet recently?
 


OP
S

stuntdoogie

2000 Post Club
Messages
2,202
Likes
174
Location
NYC
Thread Starter #6
Have you remove the intake tube to see if there is excessive oil buildup on the inside? Have you gotten the filter wet recently?
I removed the aem tube from the stock tube, rubbed my fingers inside both tubes and saw oil. Most of the oil build up was on the heat shield. The bottom of filter was wet from oil.
 


RAAMaudio

5000 Post Club
Messages
5,268
Likes
927
Location
Carson City
#7
Oiled or dry filter?

If oiled it could be from to much oil on it, if a dry AEM like I use in my DIY intake then the oil is from the engine obviously.
 


OP
S

stuntdoogie

2000 Post Club
Messages
2,202
Likes
174
Location
NYC
Thread Starter #10
I have a bit of oil as well, I run the piss out of my car though which might be the reason.
So you are telling me this is normal? Is this the reason why people oil catch cans?
 


RAAMaudio

5000 Post Club
Messages
5,268
Likes
927
Location
Carson City
#11
I have a catch can but might be trying a second one, I have a modified to work on the FiST Elite Engineering installed on the passenger side and it works but I bought the best Mishimoto can to put there instead. I was going to sell the EE can but might just give it a try on the drivers side to see if it stops the oiling issue.

It is a very small amount of oil but in time it would start getting on the compressor wheel, not a good thing.

My car only has 2k miles but 200+ at the race track going all out and over 100 tuning runs testing different fuels and ironing out an issue the car had.

I read something about using a can on the drivers side, should be under the big catch can thread I imagine, I am not sure this is a normal issue or car by car, use, etc....
 


OP
S

stuntdoogie

2000 Post Club
Messages
2,202
Likes
174
Location
NYC
Thread Starter #12
Damn this has me worried. Got a dealer app saturday for an oil change, ill have them take a look.
 


dyn085

2000 Post Club
Messages
2,434
Likes
820
Location
Vancouver
#13
So you are telling me this is normal? Is this the reason why people oil catch cans?
This is not normal. I hit full boost multiple times a day and all of my components are dry.

Out of curiosity, did you do anything specific for break-in?
 


OP
S

stuntdoogie

2000 Post Club
Messages
2,202
Likes
174
Location
NYC
Thread Starter #14
This is not normal. I hit full boost multiple times a day and all of my components are dry.

Out of curiosity, did you do anything specific for break-in?
No, my car has 12k mi. Didnt do anything recently except Tranny oil change, cobb rmm and cbe.
 


XuperXero

Active member
Messages
587
Likes
130
Location
Wuxi
#15
Could be just the breather on top of the transmission case. It's pretty close to the intake.
 


MOFiST

Active member
Messages
724
Likes
74
Location
Adelaide
#17
What that has to do with oil inside the intake tube?
Do you spend lots of time in boost? If yes then it might be normal? I'd get an OCC on there if it was me. Just to see how much crap you catch. Normally the PCV fumes will only vent through there on boost and direct through the manifold when the engine's in vacuum. That's unless you've altered the PCV setup.
 


OP
S

stuntdoogie

2000 Post Club
Messages
2,202
Likes
174
Location
NYC
Thread Starter #18
Do you spend lots of time in boost? If yes then it might be normal? I'd get an OCC on there if it was me. Just to see how much crap you catch. Normally the PCV fumes will only vent through there on boost and direct through the manifold when the engine's in vacuum. That's unless you've altered the PCV setup.
Nope no pcv alteration. Looking to get a CC. Wish there was one made specifically for our car.
 


MOFiST

Active member
Messages
724
Likes
74
Location
Adelaide
#19
I know right. No teaser pics from Boomba yet? They'd sell plenty would be my guess.
 


XuperXero

Active member
Messages
587
Likes
130
Location
Wuxi
#20
What that has to do with oil inside the intake tube?
Because you have AEM filter which open. Transmission fume from breather upward to intake and your intake is sucking air all the time. Wouldn't be surprised if it sucked fume and condensed into oil on the filter. Also explains condensing on the heatshield.
 




Top