kenny5969

Hello All,

I have been stage 2 for over a year now with no issues or engine lights. I decided to work with Vince at Trifecta to get a good tune and he pointed out my IAT2 readings were almost 170 during hard pulls and the #42 injectors Zomer ot ZZP said would be fine for a 2.9 pulley was maxing out at 100% duty during WOT.

I ordered new #50 injectors, IC pump, Dual Pass plate, new o2 sensor and a Interceptor gauge. During the install I had to remove the Intake manifold and rotated 2 of the Laminova Cores. As I was doing this I noticed alot of oil build up that looked to be coming from a plastic looking tube that feeds oil from the head through the manifold to the Laminova Cores.

I put everything back together and installed the new pump and injectors. Uploaded a new tune from Vince and care ran fine with a few hesitations during idle. After about 10 min I pulled a PO171 so I reset it. Pulled it again and then again. When I installed my intake it happened and i reset it and it was good for a year. Then I installed stage 2 and it happened again. Same thing, it went off and was fine until now. I figured it was just from the changes again but now it will not go away.

Question 1 - Is the oil in the manifold normal?
Question 2 - Do you think the tune needs a little work to Correct the PO171?


I checked all vacume lines and connections and all looks good. IAT2's are down below 120 now and there are no coolant leaks.

MODS - Injen CAI - Hahn 3" CB - NGK plugs - 2.9" pulley - #50 injectors - ZZP S3 heat exchanger, ZZP Dual pass plate, Ottp trans mount. Mustang Dyno'ed 250whp before tune and injector replacement.

SCcobaltSS

iTrader: (2)

Oil is normal since the PCV is connected to the intake. Put a catch can in the middle of that and it should stop.

Tune needs worked since teh P0171 is a lean code.

kenny5969

A catch can? is there one you recommend and maybe a link for a how to for the install?

kenny5969

The oil didnt look like it was coming from the intake. It was coming from a small hole on the block between the two center cylinder ports. When you line up your manifold the two holes line up. I do not see how putting a catch can at the intake will effect the oil as it is not passing through that way. The actual intake and throtle body is dry as a bone.

So my question is, how can you put a can between two pieces of metal that are pressed flat together where oil is passing directly from the head to intake.. NO TUBES

kenny5969

Sorry for the multiple posts but I found a post here on Cobaltss.net where someone took a perfect picture of the valve and you will notice they have oil build up in the manifold as well. I dont see how having that much oil right at the cylinder could be good but maybe its normal....

https://www.cobaltss.net/forums/2-0l...nifold-169216/

see this link

SCcobaltSS

iTrader: (2)

From my understanding that PCV was covered up in the new style intake manifold gasket but not 100% on that. I know oil does come from the PCV off of the valve cover though.

Ebay "Catch Can", find one that fits.

Leafydialupking

iTrader: (1)

Its not covered up on the new style, its just sealed off better from the other ports. Oil coming from it is somewhat normal but not heavy flow. Its an indication that you either have more blow by than normal or you have less crank case venting than normal from the vent on the valve cover.

mrbelvedere

iTrader: (3)

thats not a pcv port that is a breather

SCcobaltSS

iTrader: (2)

Hmmm someone told me PCV. Makes sense though since mine is open to atmosphere and doesnt leak oil now that I think about it.

mrbelvedere

iTrader: (3)

you dont want to run it open to atmosphere unless u had it setup that while being tuned it will cause a lean cruise

SCcobaltSS

iTrader: (2)

Yah I tuned while it was open. What system is it part of? Intake?

mrbelvedere

iTrader: (3)

the engine can pull air into it from there through the pcv port in the head and cause it to have a lean cruise

SCcobaltSS

iTrader: (2)

Interesting, good info. I had it plugged when when I blew my head gasket and just didnt plug it up. Have tune since so I am not worried about lean conditions during cruise. May plug it again so I know the system is sealed, to a point.

05Slowline

iTrader: (2)

As said the substance in the IM is normal.
If your tune wasn't pig rich then the 42's would've been fine for a 2.9.

I have mine dumping onto the ground lol no problems

kenny5969

well for some reason my car dosnt run like it has a 2.9"... not many people are pulling 17psi on a 2.9 and 250whp on a Mustang dyno which under-rates readings. The box tune ZZP did actually wasnt that bad per the local dyno shop. i guess i got really lucky with all my upgrades as I didnt have many of the problems alot of others do. What's funny is all of the stuff people mentioned would go bad or happen as a common issue happened on point all the way down to the IC pump going bad.

kenny5969

I think iv been running around on the bad pump for a while. When i had my car dyno'ed a few months back we noticed that my first pull was 250 w 17psi and my second pull dropped to 244 w 16psi and the last pull dropped to 238 at 15psi... i figured it was heat soak but thought that it was impossible since I was running the HE with only the 2.9..

so you think i should be fine and not worried about it?

mrbelvedere

iTrader: (3)

alot of people use the excuse of a low reading dyno when their car dosent make what they think it should

no chassy dyno is accurate its nothing more then a tuning tool

kenny5969

An excuse, why would someone use an under rating for when the car dose well. I said that my numbers looked good, better than expected. I know many people post hp reading that are really high and alot of people use dynopak's or the other one thats out there and they are known to not be adjusted for corrections and such. An excuse would have been.... My dyno is low BECAUSE I used a mustang dyno" i said the opposite, I said I was surprised to get the numbers as high on that dyno. I was expecting numbers alot lower.

Maybe you misread my post

kenny5969

I used it to get an idea of what I was gaining from each addition and use it to compair to what others get as well to see if it is a common gain. Problem is not many people use the same brands and they read different so it makes it easier to be clear what brand it is and where it is. i have seen people post 260 with the same mods and other post about the same. Most of the people who post higher numbers come back with the answer dynopak or dynojet. I make sure I mention it when ever a post supporting numbers...

Leafydialupking

iTrader: (1)

They do typically read lower. I only like to compare numbers from dyno jets with the weather station turned on. If it is they claim and pretty much show that no matter what the weather or the dyno shop the number comes out to within 1%. They're the only dyno calibrated like that. On the other hand they're basically useless for tuning, along with all other inertial dynos. Tune on a load varying, compare ***** size on dynojets.

mrbelvedere

iTrader: (3)

chassy dynos arent accurate should they be should there be a indusrty standard for chassy dynos yes to all

mrbelvedere

iTrader: (3)

there ya go thats how you should use it and who cares how it compares to others that wont make it any better oe worse

kenny5969

Well if another person uses the same dyno through all of there upgrage you can get an idea of what each upgrade was able to do.(to a point) If they used a mustang dyno for stock and then used a dyno pak for the stage 2 and another for the next the data is totally pointless. Makes it easier for people when you mention the dyno you use.

HopnDude

Sorry for the old thread digup.

But, I have a question.

ONE, this oil issue on the intake port. You're having this issue on the supercharged model. I just recently pulled my intake to do a 2 pass intercooler plate and swap two coils around. I also noticed the oil buildup in the intake ports. What gives on this?!

My Turbo Build S10 I'm doing, yes, I see the need/use of a Oil Catch can and how it works there. Reason being, you want the PCV setup where there is vacuum, and a check valve. When under boost, the check valve serves its purpose. When under vacuum, you don't want to suck any oil through, it drops in the can, only gasses get through.

On the Supercharged 2.0, the PCV is on the throttle body if I'm correct in saying so. I had a little carbon build up around this on the TB, and the TB butterfly (plate). But answer me this;

Q: Why is there only oil, in the intake ports, nothing in the intake itself, and nothing in the supercharger or intake portion?! All I had by the throttle body was light carbon.

An a 2nd question;

Q: If I setup a very mild methanol injection setup, would this clean some of that oil/carbon and burn run it through and allow it to burn off?!