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Oil in intake

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Old 05-15-2010, 08:03 AM
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Oil in intake

So I just took out the baffles in the intake per the DIY writeup and I noticed that my air filter was soaked in what appeared to be engine oil. The whole filter was not soaked but the part directly beneath the the intake ducting was. So then I disconnected the air box from the intake tubing leading the manifold and noticed a fair amount of standing oil. Is this normal? I did do a search but found nothing of interest.
Old 05-15-2010, 08:08 AM
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No, it is not normal. Dry it up and clean it out.

Oil change places, including dealers, often overfill. That's one of the reasons a number of us have installed an oil catch can as a safeguard (and change our own oil).
Old 05-15-2010, 08:13 AM
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I heard of this ..... will try and find threads for you....

I'm not sure how serious it is, if at all.....

I can tell you this, my 05 gets hardly any oil in the intake (a little) but not like what you are talking about.

I could only speculate that it isn't good, however loads of people have oil catch cans so wtf do I know.
Old 05-15-2010, 08:15 AM
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ok ... or what Huey said .....

@ Huey .. really dude .... over filling the oil causes the blow by the shows up in the intakes?

Makes me happy that I do all my own oil changes
Old 05-15-2010, 08:24 AM
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The best part is that I just had the car at a dealer for a stalling problem and paid them an arm and a leg for a diagnostic which of course turned up inconclusive. I bet the tech didnt do anything but drive my car.

Ill be filing a complaint with Mazda NA.
Old 05-15-2010, 08:27 AM
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Did you clean the MAF sensor?
If no... I would do this.
Old 05-15-2010, 08:31 AM
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+1 Jon
A dirty MAF sensor will cause rough idle, stalling, and a inefficient running engine
Old 05-15-2010, 08:33 AM
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If you're unsure on how to clean the MAF sensor, refer to this post:
https://www.rx8club.com/showpost.php...71&postcount=9
Old 05-15-2010, 08:37 AM
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Thanks for all the help guys, I really appreciate it.
Old 05-15-2010, 08:41 AM
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Ya I agree with Jon .. if you are getting that much oil in there ...... jeesh
And so easy to do ..
Good call Jon
Old 05-15-2010, 08:45 AM
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Originally Posted by medman
The best part is that I just had the car at a dealer for a stalling problem and paid them an arm and a leg for a diagnostic which of course turned up inconclusive. I bet the tech didnt do anything but drive my car.

Ill be filing a complaint with Mazda NA.
LOL check out this!
This is the Mazda dealership where I live .... they just received the EPIC FAIL award from Mazda NA

https://www.rx8club.com/canada-forum-35/orangvile-mazda-dealership-charged-196812/
Old 05-15-2010, 09:07 AM
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the only time I had oil in intake was Dealership changed the oil

I never, ever had oil in intake if its me who did the oil change.
Old 05-15-2010, 09:15 AM
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uggh...



Medman- Oil in the intake is a COMMON problem for early RX-8s . The original PCV set up(read- none) allowed oil to travel up the accordion tube to the airfilter and MAF. any one pouring oil in the top without a funnel or overfilling the oil caused this. Mazda made a running change along the way to a new PCV set up to correct the issue. You can get the bits all in one kit at the dealer. Mazmart or Finishline performance can probably get you a better price.


you're looking for TSB #01-050/06

part number for the new ventilation kit is N3Y1-13-S80A
Old 05-15-2010, 09:30 AM
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Originally Posted by zoom44
uggh...



Medman- Oil in the intake is a COMMON problem for early RX-8s . The original PCV set up(read- none) allowed oil to travel up the accordion tube to the airfilter and MAF. any one pouring oil in the top without a funnel or overfilling the oil caused this. Mazda made a running change along the way to a new PCV set up to correct the issue. You can get the bits all in one kit at the dealer. Mazmart or Finishline performance can probably get you a better price.


you're looking for TSB #01-050/06

part number for the new ventilation kit is N3Y1-13-S80A
Thank you. Ill have to do this.

The worst part was that the dealer specifically told me that the air filter was not fouled and did not need to be replaced, I even have this in writing. That was on thursday, I have not added oil or had an oil change since before going to the dealer (a week or 2 before). So he either flat out lied to me or did a shoddy job checking out my car. Either way they charged me for a diagnostic which was not performed correctly if at all.
Old 05-15-2010, 09:33 AM
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Originally Posted by zoom44
uggh...



Medman- Oil in the intake is a COMMON problem for early RX-8s . The original PCV set up(read- none) allowed oil to travel up the accordion tube to the airfilter and MAF. any one pouring oil in the top without a funnel or overfilling the oil caused this. Mazda made a running change along the way to a new PCV set up to correct the issue. You can get the bits all in one kit at the dealer. Mazmart or Finishline performance can probably get you a better price.


you're looking for TSB #01-050/06

part number for the new ventilation kit is N3Y1-13-S80A
Well Zoom44, I've been around these parts for awhile and your word I respect but I have to disagree with the "this is common in early models" statement.
However you explanation makes perfect sense and I didn't know Mazda had a TSB out for it..... (I guess the TSB shoots me down, must be common enough to have a TSB)

What are your thoughts on getting a catch can if you are not having any issues with Oil in the intake ... don't bother?

Last edited by wcs; 05-15-2010 at 09:36 AM. Reason: added thought
Old 05-15-2010, 09:40 AM
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It was fairly common in 04 and 05 models till they redid the IM plumbing...Mine was replaced...

What color is the oil? If it is clean...they likely filled it too fast and it overflowed into the intake

If it is dark...the breather likely puked it up and that is more of a problem

Sometimes the blowby from crappy side seals leads to this...and a Zoom Zoom treatment might help clear it up
Old 05-15-2010, 09:40 AM
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It was fairly common in 04 and 05 models till they redid the IM plumbing...Mine was replaced...

What color is the oil? If it is clean...they likely filled it too fast and it overflowed into the intake

If it is dark...the breather likely puked it up and that is more of a problem

Sometimes the blowby from crappy side seals leads to this...and a Zoom Zoom treatment might help clear it up
Old 05-15-2010, 09:44 AM
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Originally Posted by wcs
Well Zoom44, I've been around these parts for awhile and your word I respect but I have to disagree with the "this is common in early models" statement.
you can disagree all you want but to check the veracity of my statement you need to do nothing else but search my posts for PCV or oil in the intake.

then if you don't think that's enough threads to call it common then do a search for oil in the intake over the whole forum.

then if you think that still isn't enough instances realize that Mazda changed/added ventilation for the 2006 model year and created a kit to update the 2004 and 2005 cars and issued the TSB specifically to alleviate this issue and the milky dipstick issue.

Also note that I was talking about the kit and the TSB before they were announced because of being included in some QMD email strings.

Its as common as water in the the tail lights. As common as failing CATs.
Old 05-15-2010, 09:45 AM
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I've got an 05 and most of the dudes in our local RX8 group have 04-06's

I've not heard one person mention a problem with oil in the intake.... guess we are lucky.

That all being said .. I'm going to make sure I use a funnel from now on and seriously considering the SeaFoam .... perhaps just for fun.
Old 05-15-2010, 09:46 AM
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And if you EVER want info that is super secret and we aren't really supposed to know....ASK Charley............

He will likely know.......
Old 05-15-2010, 09:46 AM
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Catch can is still a good idea for catching blowby and that stuff the dan talks about it puking up
Old 05-15-2010, 09:49 AM
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Originally Posted by zoom44
you can disagree all you want but to check the veracity of my statement you need to do nothing else but search my posts for pcv or oil in the intake.

Then if you don't think that's enough threads to call it common then do a search for oil in the intake over the whole forum.

Then if you think that still isn't enough instances realize that mazda changed/added ventilation for the 2006 model year and created a kit to update the 2004 and 2005 cars and issued the tsb specifically to alleviate this issue and the milky dipstick issue.

Also note that i was talking about the kit and the tsb before they were announced because of being included in some qmd email strings.

Its as common as water in the the tail lights. As common as failing cats.
ok ok uncle uncle

lol
Old 05-15-2010, 09:49 AM
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meh - i dont get the super secret stuff any more since the mulligan video. secret? some, but not super secret.
Old 05-15-2010, 09:50 AM
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Did you but the car new? Might have been fixed before you got it....

I was one of the first Canadians to get it done...after months of bitching they got me a kit from the States

Part of the power of the forum really....There are area specific recalls done...and often the right application of pressure will get them to do them in an area not originally specified

The oil cooler line issue would be one I'd bitch about in the NE US .....they have a recall for it in Canada
Old 05-15-2010, 09:51 AM
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Originally Posted by zoom44
meh - i dont get the super secret stuff any more since the mulligan video. secret? some, but not super secret.
Pissed of Jeremy did you


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