Oil In PCV Valve

800 Views 3 Replies 3 Participants Last post by 12ecofamilycar, 2 mo ago

Phillbert

Discussion Starter · 3 mo ago

But wait, there's more!

I flushed the coolant in my 2016 Cruze Limited yesterday and found a small bit of oil leaking from the intercooler line. "Isn't that supposed to be an air line?! " I thought.
Sure is!
I've been doing lots of research, even ordered the PCV fix kit. I found that the "nipple" is still inside the check valve. The regulator diaphragm seems to be working still - no sucking noise, no pressure at the vent hole thing. I believe the valve cover was replaced by the former owner.

So here's my question, what is my next step? The oil could just be left over from before the new value cover, but it seems like fresh oil at the intercooler line, so I don't think that's it. Could the check valve be malfunctioning even though the nipple is there? Could something else be wrong with the system somewhere else? And will my Cruze ever give me a break and just work for more than a week without stressing me out?

Any thoughts and advice are appreciated.
Thank you all so much!

Hood Motor vehicle Automotive tire Automotive air manifold Automotive fuel system

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JLL

· #2 · 3 mo ago

Phillbert said:
So here's my question, what is my next step? Could the check valve be malfunctioning even though the nipple is there? Could something else be wrong with the system somewhere else? And will my Cruze ever give me a break and just work for more than a week without stressing me out?

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1. Some oil in that line is normal. The vapors collect in there under boost conditions.

2. Yes, but only of it's gummed up.

3. There could be.

4. Not if it was neglected somewhere in it's life. The LUV/LUJ four engine is one of GM's poorer designs. If taken care of from the start, it can be a good engine.

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Phillbert

Discussion Starter · #3 · 2 mo ago

Any ideas what else I can test to check on it? I drive about 100 miles a day for my job, so I need this guy to be running in tip top shape.

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12ecofamilycar

· #4 · 2 mo ago

I bought an obd2 adaptor on amazon for $30. and purchased Torque Pro from Play Store for my phone. I enjoy real time monitoring my car's computer data on my commute and learning about what it all means. The 1st thing I paid close attention to because of failing coolant system parts was coolant temp. Saved my engine and actually my 2012 has temp on the dic in addition to our silly temp gauge. Lately I've been monitoring catylist efficiency along w many other sensors. Oil temp, trans temp, boost, ltft, stft, O2 1+2, etc. Keeps me in touch with whats going on and helps diagnose issues as well.
Check coolant/oil level weekly. Use top tier gas. Use good oil and gm filter. Us gm parts when you repair it especially anything electronic. Try to not lug the engine a lot uphill. Don't get on it too heavily, it's an efficient car not a fast car. Good luck

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