...grease inside intake?
 

I was approaching my clean/recharge interval on my K&N filter, so naturally I pull the airbox. After I get the airbox out i noticed what looked like something pooled in the ribbing of the intake piping near the throttle body. I figured since the shop that had my car overfilled the oil ridiculously, that was what it was. However, when I ran my finger through it, I got what looked like clear grease on my hand...Anyone have any idea what this might be?


https://cimg2.ibsrv.net/gimg/www.rx8...8e9ef82a15.jpg


Notice the pooling in the ribbing.


https://cimg3.ibsrv.net/gimg/www.rx8...cbee4aed81.jpg


Hard to tell exactly because its clear, but on my middle finger you can see the clear coating, then to the right of my fingertip you can see where i intentionally rubbed it together a bit, that should give an idea of its consistency and texture. Any ideas just what that stuff is gathering in my intake piping?

Any chance it's off of the K&N filter? (the recharger fluid) .

It's puking oil, time for a compression check ...

Oil that looks like clear grease?
(I'm not trying to sound like a wise ass, I'm actually asking if that's how it looks and why)
The shop I picked it up from did have the oil ridiculously overfilled though until I noticed it and drained it about a few days ago.

Team, you're the first person I've noticed talking about puking oil and compression. It makes sense, but is there a reason you don't think a little in the intake could be from filling the oil?

Unless something happens that vastly changes the oil, I don't think its oil. Again, i'm not 100% sure, but there is zero oil in my air intake box, or on the filter, or in the housing for the maf.


There's just that white grease looking stuff collected in the ribbing on the intake pipe. I swabbed some off with a screwdriver, looks just like grease, feels like it too. I know in the picture the pooling looks like regular motor oil, its not, its that grease looking stuff.

The 2006 did have Some revisions to the hose routing that was supposed to prevent the "oil in the intake" issue, or am I thinking of something else?

I can't tell what it is. Just that when the engine pukes oil that's where it goes.

Just clean and check later to see if it comes back.

Otherwise I've been saying that "an engine that routinely pukes oil is a general indicator that it's going bad" for several years now.

The TSB being referred to had nothing to do with this issue

https://www.rx8club.com/attachments/...-oil-gauge.pdf


I was unable to intentionally make oil go in the tube while pouring it into the filler spout, the idea was shot down many years ago, plus it won't come back again like when the engine is puking.

Cleaned and put the intake piping back on today, no oil, but here is a closeup of the clear 'grease' that came out of the ribbing on the intake piping.



https://cimg8.ibsrv.net/gimg/www.rx8...9f6f20f952.jpg

uggghhh, maybe an assembly lube of some sort. Was that in all the ripples, or just the first one?

Yep. If you look at the photo I took of the inside of the intake accordion pipe you can see it in the center of each 'ripple' I have no idea what it could be.

My 2004 has the same thing. Cleaned it out, but it was a thick grease like yours (not runny oil). Not sure what it's from though.:dunno:

Either oil from the KN filter or oil from the engine.

My bet it's from the engine because you stated they massively over filled the oil.

^^Oh gawd .....


.

Something I'm missing? lol

it's been discussed ad nauseum, i give up and don't care any more ...

Either you sprayed too much oil on the washable filter or the oil level was too high and sucked into the intake.

^^Oh gawd II .....

rofl

That looks more like lube grease than oil...

I think the "Clean it, and check again later..." suggestion is probably your best bet.

yeah, thats what I did. My only guess as to why it would be there is maybe there were tiny holes in the ribbing creating a vacuum leak? I havent noticed anything yet but I'll look more into it.

It does take a second or two to return to idle after free revving. hovers at about 1.1k, then falls, to 1, then to normal. approximately of course.

Sprayed some cleaner on some of the hoses today actually and didn't notice any change in RPM's, maybe im just not looking hard enough.

:suspect:

I mean... it's definitely oil from overfilling.... ya...

:suspect:

it was also established as not being oil so the next person to suggest that it is wins the :dunce: of the year award

Established by whom? The OP was not sure what it is, and no one has offered any credible alternatives to oil. I had the exact same thing when my oil was overfilled. Also accompanied by a nice oil stain on the air filter, and oil that had seeped into the air box. This is clean oil, don't expect it to look like the stuff you drain from the oil pan.

Lol. This is a good one.

umm by the op when I first asked at the beginning of the thread. or even by the name of the thread.

Except that it is oil, and the OP wasn't sure.

^Are we looking at the same pictures? the stuff that looks like clear petroleum jelly?

Even oil outta the jug is still amber, at least I've never seen clear oil the consistency of hair gel.... I mean it could exist...

https://www.rx8club.com/attachments/...e-oiljelly.jpg

OP what are you doing with vaseline looking lubricant on your intake tube.......

But in all seriousness I have no clue

^AHHHHHHHHHHHHHHHH!!!! somebody loooooooooves their 8 a little too much!!! :naughty:

^^^^^^^^^^^ knows from experience:us4allswi

^Nightly....

Indeed, looks exactly like petroleum jelly to me. I knew my neighbor was a huge fan of my car..but...I didnt know they were that much of a fan..I think I am going to start parking it closer at night. :scared:

So now we've moved on from oil to protroleum jelly? Lol...this thread

If you guys want to chip in I'll send off a sample of it to get it chemically analyzed. :yelrotflm

I can't believe it's not butter!!!


And is "protroleum" jelly made from protons?

Haha spell check didn't get that!

Anyway, yes...I'm positive there are some protons in petroleum jelly. :p:

Yeah, this is what can happen when you over-lube your MAF :p:
Either that, or your blinker fluid reservoir is leaking.

I hate to bump a thread from 2 years ago but I ran into the same thing a few weeks ago and was searching around for the cause. Has anyone figured out what this is from?

The bottom grooves of the intake were filled with what looked like petrolium jelly. None of it was discolored at all, so I very much doubt this is engine oil.

From my experience it is crankcase pressure pushing oil up into the intake and throttle body.
Most likely from the overfill. Its looks like grease cause the oil lines will be lined with old oil mixed with condensation or whatever, comes out jelly looking. I have seen entire engine bays covered in oil from not being able to breath properly.. i rev the shit out of my rx8 and only ever run no more than half up the dipstick with oil. This helps alot, along with thicker grade oil etc etc..

^^ sigh ....

When I first got my RX8 (early 2005) I used to race with a quart over the full mark of 5W20 and never had a single drop of oil, grease, etc then or ever since, though I stopped overfilling later and started running heavier oil.

Clean it out and check it later. If it comes back the engine needs to be rebuilt. Or you can deny this and continue running it into the ground.

Well, I'm officially spooked. Saw this thread and decided to check my MAF and airbox after noticing a rough idle the last couple of days. Behold this terrible sight.
https://cimg5.ibsrv.net/gimg/www.rx8...1268227843.jpg
https://cimg1.ibsrv.net/gimg/www.rx8...f6ac4ef77e.jpghttps://cimg3.ibsrv.net/gimg/www.rx8...f6c8f25dec.jpg

TheWyvern - do you fill oil using a oil fill spout or pour it in the oil filler neck. Not using a fill spout can allow oil to flow into the return lines

I just started driving the car actively (about every other day) again this last Friday and the last oil change was done ~150 miles ago before I owned it by my father, the previous owner of the car. Just got off of the phone with him, as I just drove it hard for the first time last night and I only just saw this issue. He says he didn't know the car only took 3.7 quarts and had put about 4.5 quarts plus a top off in last fill up. He doesn't use a spout.

hmm. invest in a long-necked funnel it is.

Alright guys, for anyone interested (and don't take this is a direct contradiction to what TeamRX8 said, he's still probably right if it's happening all the time) I was at the dealer today to have my recalls serviced and I mentioned to the service lady that my air filter was smoked because I got a ton of oil spewed into my intake. She immediately asked me if I over filled it last oil change. I told her what my dad told me and she knowingly smirked and told me that it's pretty much inevitable on the 04-05 models that she has seen. She said something to the effect of "we've seen three RX-8's in here this year for these recalls and all three have this intake problem". Essentially what I'm taking away from this is CHANGE YOUR OWN DAMN OIL AND DON'T OVERFILL IT. Maybe even invest in a catch can if you don't trust yourself.

back in 06 or so mazda addressed the issue for 04-05's with a TSB
they run the oil overflow lines to the maintenance nipples (same ones you use for sea foaming)and change out the oil filler neck/bottle(may have just been a check valve I don't recall) that's the same as the the 06 and s2 fix.
This was not a recall so not everyone had it done(I'm not sure if they added this for remans or not)
its basically and inline catch can(lower run) and helps prevent the milky oil(top run)
https://www.2carpros.com/images/ques...5/original.jpg

notice the line coming out of the oil filler neck and heading towards the passage (left) side
instead of towards the intake?

this is my own 04
https://cimg1.ibsrv.net/gimg/www.rx8...5e2178cffd.jpg

this is stock 04 layout
https://i234.photobucket.com/albums/...S/DSC_3823.jpg

that being said my first 8 I did not have this done and had overfilled the oil and never had any on the filter, my current 04 as seen in the photo has this done and also doesn't get oil on the filter. your best bet is to install a catch can

like team said if you have excessive amounts of oil on the filter you have other issues

Tremendous amount of helpful information here. I can see from your diagram the lines running from the oil filler neck to the intake manifold on the left side. Just as clarification from what you've said, are you asserting that it is possible that over filling by over a full quart could cause oil to wind up in your intake or are you saying it's not likely?

Either way, I'm going to order a compression tester on July 1st and see what's going on concretely with the motor.

I greatly appreciate the information, as always.

pre TSB it's possible, but unlikely. however I've seen strange things :lol:

When I do oil changes I get a gallon jug and a filter ~20$. I don't use a funnel and check the jug till it says about 1 qt remaining( I technically overfilled). Don't forget that when we do a normal oil change we don't get all of the oil out of the system we do about 3.7-4 qrts but there is about 7 in the system (coolers and lines).
On the dip stick there should be two lines/circles/notches(on S1) the goal is to keep it close to the full line and never below the low line. this only applies if your car is stock, catch cans and sohn adapters will change a few variables but the intake part remains the same

ps you should be premixing :lol: