Fisher

Hello

A little of info of my car, i have a 09 r3 with a AEM CAI

on the weekend i got on the hwy when i was reving up i got to about 7k then revs droped smoke blew out the back the low oil came on and the car does not rev over 4.5k now.

i got the car home and the next day i noticed a pool of oil under the car so i went to see where the oil was comming from to see how bad the problem is.

all the oil was comming out of the filter of the CAI, so i took apart the CAI and it was full of oil. the whole CAI is just coated.

i am looking for help on to as why this happend and how to fix this also to clean the intake system. i looked behind the throttle body and i is also coated.


please help

Heeroguy

ouch sorry dont have a good answer, at least heres a bump.

is anything on intake or tubing vacum lines etc broken or pulled off? anything u might have hooked up wrong (although i cant really see what could have caused that)

you recently seafoam or anything?

and it ran fine right up until this?

Fisher

I have never seafoamed my car yet.

car has been running strong up until this point. I am going to clean everything thing up and run that mazda zoom cleaner through it. and go from there. until I hear a better solution thanks for the quick response though

Brettus

iTrader: (2)

This was a very common problem on earlier 8s . Mazda fixed this by redesigning the crankcase ventilation system . Your AEM install has possibly undone what Mazda was doing to prevent the issue .
Series 1 owners with this issue fit catch cans to the oil vent tube.
Series 2 owners DO NOT need Oil Catch Cans...do not change any OE oil line configuration in S2's.

Mazmart

iTrader: (12)

We had a customer recently who said he 8 was running poorly and even throwing misfiring codes as well. Turned out he had excessive oil in his engine and it puked it into his intake causing all kinds of issues. Whoever did his last oil change overfilled it by a few quarts. It drives great now. Could be as simple as that.

Paul.

paimon.soror

iTrader: (15)

remember guys, this is an S2, there is no vac tube from the oil filler neck to the intake, but instead the filler neck vents to the LIM service nipples. The S2 does have a built in catch can though that vents to the UIM, so I suppose if your severely overfill it would leak oil into the intake

poacherinthezoo

When I purchased my S2 the (Cadillac) dealer did an oil change "for me" as part of their "100 point inspection" of all the used vehicles they sell (so nice of them....). I noticed that they did overfill it a bit (was a touch over the "full" line when totally cold, and a good amount past the "full" line when hot - not enough for me to expect it to cause any issues due to the re-designed oil catch can/crank case for the S2).

About a week or two later I noticed some oil was sitting in the stock air intake filter box (while checking to see if the air filter needed to be replace) and subsequently gumming up the air filter. Needless to say I immediately changes the air filter and cleaned out all the oil I could. Unlike your situation, the quantity of oil was far less, and my R3 was not blowing smoke out the back, misfiring or displaying any issues at all.

Since I've been done every oil change since then myself, I have yet to have the issue repeat itself. So while I cannot say with certainty that over filling the oil will cause it to leak into the intake, it does at least appear to be possible even with the S2's improved design. Since I am the 2nd owner of this car, I am unable to comment on the role of chronic over filling might have on negating the S2's improved design. But what I can say is that I have the full service history from the original owner, and she had all of her oil changes done at the Mazda dealer she bought the car from.

Fisher

Thanks for the help everyone I think I am going to the stock air box back on clean it up a bit and take it to mazda

2 questions it the throttle body oil cooled??

and the other I seem to have missed placed the connectors used to connect the hoses to the stock intake if I remember the white barrel connector does anyone know where I can get those?

poacherinthezoo

As far as I'm aware - the throttle body is not oil cooled. It is my assumption that the constant air flow past it is sufficient to preclude the need for any additional cooling measures. However, this is just my speculation and I have nothing I can find to back it up.


You could look up the park numbers (thanks to Ash8's wonderful posts) for the specific pieces you need and then order them from a Mazda dealer (likely not the one you plan on taking your car to, assuming you're going to be telling them that the problem occurred while the car was in stock trim).

jammcc8284

hey, ive been having the same issue along with a lot of misfires. Started happening before my oil change and got worse after. My entire intake was coated with oil as well, including the air box. Cleaned it all up, took it out for a drive and hit redline a couple times, got another puff of smoke and when I got back noticed oil everywhere again! Im assuming that they overfilled with the oil change. I have since added a little seafoam in the oil/gas, and some premix. Been running her a little rough to kinda burn that oil off and it has gotten better. Oil still in the intake though :/ have you found a remedy or maybe the issue? Are you suffering from a misfire too?

RIWWP

iTrader: (2)

Have you checked the oil level?

Seafoam in oil should only be used right before an oil change, and only if you are flushing the entire system. Dont keep it in there, it's a cleaner, not a lubricant.

jammcc8284

well I plan on changing the oil again this week myself from now on. Sad that when I mentioned it had a rotary engine that the OWNER of the shop looked at me confused. I should've cancelled my service right then. Anyways, oil level has dropped and I don't really get much smoke although I still have oil in the intake and misfires.

RIWWP

iTrader: (2)

If the oil level is dropping, but not overfilled, then you have a bigger problem, your oil system is getting pressurized. If it's still overfilled, then the best option at this point is to do another change to get the seafoam out anyway, and refill it correctly.

All that oil in your intake is going to foul your plugs, your air filter, your intake valving, and your MAF

jammcc8284

it isn't rapidly dropping. ive had 3 tanks of gas since the last change, so ive added just a quart. I probably should've clarified that part. But the oil in the intake has been in for a couple days until I can clean it, and I haven't been driving it rough at all since that happened. but I plan on getting the seafoam out and oil change properly. ive got a CAI so im going to switch back to OEM setup.

RIWWP

iTrader: (2)

I wasn't asking about the dipstick level for how much it's dropping, or even if it's dropping at all, just for where it's filled to when it's spitting oil.

If it's over the fill line and spitting oil then there is a logical connection and simple solution.
If it's at or under the fill line and spitting oil, then there is a bigger problem.

jammcc8284

Oh okay I understand you now. Last time I checked at the pump it was under so I added a quart. No overspill since then. When it was changed it was over the fill line, and spitting oil. Ill check after work and see where its at while cold/hot.

RIWWP

iTrader: (2)

K. If it's spitting into the intake without being overfilled, you will have some troubleshooting to do to figure out why. Being that you have a 2009, the oil venting into the intake is supposed to be entering the intake in the lower intake manifold, which means that anything upstream of that (which is quite a ways to get to the MAF) would either have significant back flow of air to carry it away from the engine, or the oil is getting dumped in via a different tube.

I think the OMP system has a vacuum hose connecting to it, though I don't know the specifics or if it's possible that the OMP might be spraying oil into the intake instead of the engine due to a clog or something.

jammcc8284

well I do have a CAI and I did remove the VFAD (for curiosity and trial). I made sure that I capped the vacuum lines on the VFAD. But now that I think of it I do here somewhat of a whistle/vacuum leak near the cone filter on the intake. Perhaps maybe that is causing a vacuum leak and drawing the oil back into the intake? Im going to replace the OEM intake, VFAD and clean it all tomorrow. Do you think I should remove the Upper intake manifold to see what is in there as far as oil?

RIWWP

iTrader: (2)

If you have obvious oil in the parts of the intake you can see, then it's all over the internals. I'd remove it and completely clean it. Be careful of what chemicals you use to clean it, as the interior surface isn't just plain plastic and some chemicals can hurt it. Mild soap is safest, though most difficult to make progress.

Changing up the vacuum lines could easily be causing the problem.

paimon.soror

iTrader: (15)

Yep, on the S2 1 vac line from the intake goes to the OMP system, the second to the Jet Air nozzle

jammcc8284

That's what I thought. Ill take of the upper intake manifold as well, clean everything best I can and see where that gets me. Maybe the vacuum is sucking oil back up into the intake. Also, do you guys think that a bad/dying battery could cause misfires at higher rpms?

jasonrxeight

when my dealer overfilled my engine oil, they refused to drain some out. oil ended up in the intake tube. they had to clean up their mess. it became very hard to start when hot when there is oil in the intake.

Fisher

UPDATE!!!

I have had my car at mazda now for a week and a half. They think it has something to do with the OMP system.

They also told me they have a trouble ticket in with mazda canada and are waiting to here what they say.

i have a question would this be covered by the warranty??

paimon.soror

iTrader: (15)

should be. and it would make some sense if the OMP system is borked and just pissing oil back into the intake tract.

edit: actually, it might not be covered since it is an engine supplement, so it wouldn't fall under the engine warranty ... someone else will have to chime in on that.

Fisher

Update !!!

I called windsor Mazda today they still have not hear back from Mazda Canada but they did find the issue the oil pump is comming on randomly. They think something is wrong with the PCM which is under warrenty if thats the root issue.

stay tuned for more updates