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jekquistk5

jekquistk5

Weld nekid
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Bad PVC valve ? Over oiled k&n?

Had service stabilitrak, reduced engine power, and traction control off issues on my 2011 traverse. Had a buddy that had similar issues with his equinox and it ended up being the maf and throttle body. Decided to try the cleaners first. This is what I found when I pulled the intake tube.

y9ehabut.jpg
uvabuneh.jpg
 
Condensation issue? Does that tube off to the right connect to it? From the crankcase/valve cover? Make a lot of short trips with it, not letting it warm up?

That looks like the bottom of an intake or valve cover of a motor that isn't allowed to warm up and burn the moisture out of the oil.
 
toomany said:
Condensation issue? Does that tube off to the right connect to it? From the crankcase/valve cover? Make a lot of short trips with it, not letting it warm up?



That looks like the bottom of an intake or valve cover of a motor that isn't allowed to warm up and burn the moisture out of the oil.
Click to expand...


Average drive is 35 minutes. No noticeable smoke at startup. Oil was changed today no moisture in the oil.
 
Over oiled K&N or even a brand new one on some vehicles that air cleaner is close to MAF will get oil on MAF and mess things up. MAF can be cleaned with MAF cleaner and by then the extra oil is gone for air cleaner.

But you have water in there too?

K&N will make more HP at WOT high RPM. But other then that it is snake oil! Along with no wear near the filtration of a good paper air filter! Think NAPA Gold... I forget what the regular name of filter is from Wix...
 
Also air box was clean and dry. Gonna keep an eye on it but I guess it's pretty common for the 3.6l
 
over oiled K&N. ours in the Avalanche was worse than this when I pulled the engine out last year for the camshaft issue.

edit, I didn't see the smaller picture of the air tube, damn.

ours wasn't that bad in the tube, mainly in the intake area.
 
Was the filter just cleaned and oiled before this?

Maybe the filter was still wet with water when oiled and that is where water came from?
 
eagle mark said:
Was the filter just cleaned and oiled before this?



Maybe the filter was still wet with water when oiled and that is where water came from?
Click to expand...




I put on 15k since the k&n went in and it was brand new then. My boss put it in so I don't know how much oil was used.
 
You say the airbox is clean - is there anything else tying into the intake tube or just the throttle? I would think K&N oil would make pink sludge, but yours looks yellow - like coolant and oil. I had similar stuff in my 3.8L intake manifold when the intake gaskets went out. It never made it any higher up, though.

It's strange that anything would go forward out of the throttle, unless it happens right when you go from high vac to WOT or something. The picture makes it look like the gunk is mostly at the throttle end and clean at the MAF end. You would think the opposite would happen if a K&N was dunked in water then dunked in oil and slapped on. Plus the "clean" side of the airbox should be oily, too - at least near the exit.

What do you see inside the throttle? Disabling your traction control and what-not makes you think it's a throttle-by-wire issue.
 
In order to get that much oil in there from the K@N alone someone would have to have dunked the filter in a drum of oil. While its possible to over oil them, its just common sense. I have NEVER EVER had a problem with oil in my intakes or throttle bodies from a K@N, and I have never seen one do that either.

It really takes a special kind of stoopid to over oil one to the point of completely saturating the MAF to the point of causing running problems. Most of them problems are related to oil being pushed out of the valve covers because of blowby and sucked into the intake via the tubing that connects the valve cover to the intake. The K@N is just a scapegoat 9 out of 10 times. Now, this is just MY personal experience with them.
 
You know, looking at the picture he's right.

A new K&N can get oil on and mess up a MAF! But not like the pictures you show.
 
I would say that is condensation mixing with the vapors from the pcv, although it is quite excessive. You may want to inspect the valve real good.
 
I'd pull the hose from the pcv valve and check it for oil. If that much has made it to the intake, the hose should be loaded with oil if its coming from there.
 
Now I am thinking it's not an over oiled filter. The maf didn't have oil on it. I guess I need to find the pcv valve. There is a vac line going to the intake tube with what looks like a vacuum reservoir. I didn't trace the line back. I'll check this weekend.
 
My guess is the PVC valve froze up in the frigid temps you had lately and rendered in innefective,and allowed pressure to build up in the crank case and it got sucked into the intake thru a breather hose somehow...maybe the intake is leaking coolant and its blowing back into the throttle body too?..
 
I guess this was a problem
With the 2010's. They redesigned the intake tube with an oil collection to help band aide it rather than fix the real problem. Looks like I had an early 2011 :doah:
 
Does anyone know how to mount side steps on a 72 k5 blazer. I bought what go rhino said was universal and would work but the frame is 20 inches back from door. Is a kit available that ads a sub frame does this need to be fabricated. Any help would be appreciated
 
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