Lots of fuel in oil..and some coolant

[JaeTea]

When I was installing an oil cooler I noticed a large amount of gas and some coolant in my oil.

I drive the car pretty hard a couple times a month, but neither of those should be in the oil.

I'm running a JWT ECU, but the map just does not seem to be correct. The car seems to be running too rich at certain areas in the map.

The coolant is just bad...I've driven the car about 30 miles and put two drift events on it.I'm only running 7psi on a JGS T3 Turbo.

[S13xCrazy]

What do you have setup for your PCV system? Any catch can or anything?

The fuel is probably from not being filtered out if I understand correctly. Without a proper system in place (your stock system does not work under boost), gas will collect in your oil as time goes by.

Alot of people get by without switching/doing a new system, but they change their oil frequently.

[480sx]

Theres only one way to get coolant in the oil, and thats a blown headgasket.

JWT tunes have a nasty habit of running to rich from what i have read. I would just go back and forth with the company, send them some data logged WoT runs and some partial throttle runs and let them lean it out.

Running rich will blown an engine even worse than running lean will. You'll blow your turbo, your head, really just trash your whole motor.

How rich are you running btw?

[esahuque]

+1^ do a compretion test on the motor and also pull your plugs and do a coolant presure test, shine a flash light in each cylnder. as you put presure to your coolant system if you have a blown head gasket coolant will leak into you cyclinders. or when you do a coolent presure test if presure is not holding properly thats a nother sign the head gasket could be blown. g/l

[JaeTea]

What do you have setup for your PCV system? Any catch can or anything?.

I have a catch can set up and the the stock pcv valve plugged.

Not sure how rich I'm running. I really don't have the time, patience or money to go back and forth with JWT. I might have a shop put it on a dyno to get some AFR readings.

[kouki_hmongster]

why do you have your stock pcv vavle plugged? your suppose to have some sort of vaccuum sucking out blowby gas through your pcv valve and into air/oil separator. the best vac source is from the stock holes from intakemanifold for the stock pcv set-up. unless you have external vac pump, or vac from exhaust.. the vc breather should go to a catchcan then to turbo intake pipe.

First is to get afr readings and if it's too rich then send a graph of afr X rpm to JWT for a fine tune. i know we all dont have patience, but do you want your motor to go BOOOM???

plus if you ever smell fuel in your oil then change out the oil.

[JaeTea]

The PCV is set up like this

If the headgasket is going, I'm not going to pay more money to get my car dyno'd and then pay JWT to fine tune it.

Thats just throwing good money on top of bad.

[480sx]

Well the thing is JWT charged you 600 bucks to be your tuner and you should make them honor their commitment to you. A SAFC and a dyno tune should fix you up though. It really isnt making any sense to me how your HG blew, i think you just got unlucky.

What kind of HG are you running? Who built your motor?

You def need a new HG though, i would start there before you did anything else.

[kouki_hmongster]

The PCV is set up like this

If the headgasket is going, I'm not going to pay more money to get my car dyno'd and then pay JWT to fine tune it.

Thats just throwing good money on top of bad.

if you already see coolant in your oil then thats enough proof that your HG is gone.

BTW there isnt vacuum off the preturbo pipe so you're not getting any blow by gas out of the crank case. are you picking up any blow by gas at all in your catch can? if your not then it's not working.

Read this thread.....zer...et-up

[JaeTea]

What kind of HG are you running? Who built your motor?

You def need a new HG though, i would start there before you did anything else.

I'm running stock internals and according to people on KA-T.org and here I should have been perfectly fine on 7psi.

My compression was 160psi across all cylinders before the turbo install.

I run an oil cooler and upgraded radiator also.

No blow by or oil leaking out the valve cover. The PCV is hooked up fine. http://www.ka-t.org/forums/viewtopic.php?t=27437

[kouki_hmongster]

I'm running stock internals and according to people on KA-T.org and here I should have been perfectly fine on 7psi.

My compression was 160psi across all cylinders before the turbo install.

I run an oil cooler and upgraded radiator also.

No blow by or oil leaking out the valve cover. The PCV is hooked up fine. http://www.ka-t.org/forums/viewtopic.php?t=27437

What i'm asking is, are you getting any blow by gas in your catch can that goes from the pcv valve to preturbo pipe?

plus i already read that thread and most of the guy didnt understand that using your turbo inlet pipe isnt a good vacuum source. there isnt vacuum on that pipe so what are you using to pull the blow by gas?? think about it and read the FSM if you have to. you probably have to change oil little more frequently compared to stock since blowby gas is contaminating your oil....

[480sx]

You probably just had a weak hg or something, i mean **** happens. Dont stress the small sht dude, its just a headgasket. You can DIY the job in less than a day and be driving the same night.

It wasnt from pre-det most likely. You said you were running rich, and the JWT tunes are not made with power in mind. They are tuned very conservativly, IMO to rich.

[JaeTea]

+1^ do a compretion test on the motor and also pull your plugs

Compression tested...

170-175 psi on all the cylinders. No oil in the coolant.

Not sure where the coolant is coming from but its gotta be coming from someplace.

As far as the fuel issue goes, I'm going to put it on the dyno and see what the AFR's are. The oil was discolored from the amount of fuel. I have no major vacuum leaks, timing is stock.

[KFL]

Its been known to happen rare but happens(seen it on this forum somewhere)..timing chain if loose to grind against front cover and cause coolant to leak into crankcase.To test, pressurize cooling system and hear if any air leaks..could do test with valve cover off and look for a leak.

[480sx]

You can blow a HG and still have good compression.

[esahuque]

Its been known to happen rare but happens(seen it on this forum somewhere)..timing chain if loose to grind against front cover and cause coolant to leak into crankcase.To test, pressurize cooling system and hear if any air leaks..could do test with valve cover off and look for a leak.

Yep, happened to me on my 95 nissan p/u. timing chain rubbed right through the cover right by the water pump, water all my the oil.

Compression tested...

170-175 psi on all the cylinders. No oil in the coolant.

Not sure where the coolant is coming from but its gotta be coming from someplace.

As far as the fuel issue goes, I'm going to put it on the dyno and see what the AFR's are. The oil was discolored from the amount of fuel. I have no major vacuum leaks, timing is stock.

Now do a coolant pressure test and see if your pressure holds.

[WDRacing]

No blow by or oil leaking out the valve cover. The PCV is hooked up fine. http://www.ka-t.org/forums/viewtopic.php?t=27437

That post and your logic just means you don't know how the PCV system works.

Which is no big deal, 80% of the people these days think they know what they are doing but are actually crippling a system that already doesn't work very well.

Your PCV needs vacuum...period...thats cold hard fact. There isn't vacuum before the turbo...another fact. So what do you get when you add those 2? You get no crankcase ventilation.

Is that your problem? No, but it's part of it. There is ALWAYS going to be blowby...always. More so when you're running boost.

Water can't touch gas unless you have some type of gasket leak...

You need a wideband, a compression test and a PCV system that works. Also, change your oil after every drift event.

WD

[JaeTea]

That post and your logic just means you don't know how the PCV system works.

Is that your problem? No, but it's part of it. There is ALWAYS going to be blowby...always. More so when you're running boost.

How would it cause my problem?

And whats the correct way to run the PCV system? This is the only way I've seen it done, unless you run it to the exhaust.

[WDRacing]

The problem with fuel in the oil comes from the combustion process itself. Especially if you're running rich. Carbon and crap from the combustion chamber forces itself past the rings and ends up contaminating your oil. In fact, it's the real reason our oil turns black. All that crap isn't metal wearing, it's gunk from the blow-by. I know this because I've seen oil changes performed on motors that run propane...very little color change because the propane is almost entirely burnt during combustion and the burn itself is far cleaner...but that's way off topic.

The best method for crankcase ventilation is to setup the stock system with 2 added parts. One is an additional check valve that will allow for vacuum, this will work in conjunction with the stock pcv valve...which is only a one way valve itself. The other is a air/oil separator, one from Home Depot that has a changeable filter will work fine. This basically doubles the stock systems, which consists of a air/oil separator and check valve already. The line that goes from the VC / catch can / turbo inlet can stay as is.

The best method IMHO is to add an electric vacuum pump to the system that pulls crankcase pressure from the VC when on boost only. Again using a separator in between. This method has worked VERY well on Grand Nationals for years now. These pumps can be found on literally tons of GM V8's in the junkyard. Usually 20 bucks or so gets you one

I'll be rigging a system that uses two pumps this winter when I start my project. Both working on boost only...but I should get some negative pressure in the sump which will give me better ring seal and gains throughout the band.

WD

[JaeTea]

The problem with fuel in the oil comes from the combustion process itself. Especially if you're running rich. Carbon and crap from the combustion chamber forces itself past the rings and ends up contaminating your oil. In fact, it's the real reason our oil turns black. All that crap isn't metal wearing, it's gunk from the blow-by. I know this because I've seen oil changes performed on motors that run propane...very little color change because the propane is almost entirely burnt during combustion and the burn itself is far cleaner...but that's way off topic.

The best method for crankcase ventilation is to setup the stock system with 2 added parts. One is an additional check valve that will allow for vacuum, this will work in conjunction with the stock pcv valve...which is only a one way valve itself. The other is a air/oil separator, one from Home Depot that has a changeable filter will work fine. This basically doubles the stock systems, which consists of a air/oil separator and check valve already. The line that goes from the VC / catch can / turbo inlet can stay as is.

WD

How would this work with a SOCH engine

zer...et-up

On a SOHC the PCV valve is actually on the intake mani

http://www.courtesyparts.com/2....html

[WDRacing]

Same way, just reposition the pieces. The PCV is on the mani instead of the air / oil separartor like on the dohc motor. You still need a second check valve and a second separator.

WD