Diagnostic help needed! Hot film MAF and low oxygen adaptation.

[Gilles]

Originally Posted by Danimal

Or this is just old power steering fluid?

Have you taste it? (seriously..) as oil and hydraulic fluid taste completely different.. you don't need to drink it, just the tip of your finger will give you an accurate taste..

[Danimal]

I dabbed a piece of paper towel in it and smelled it....but it didn't smell like anything....iI guess I should have tasted it!

Originally Posted by Gilles

Have you taste it? (seriously..) as oil and hydraulic fluid taste completely different.. you don't need to drink it, just the tip of your finger will give you an accurate taste..

[Danimal]

Here's a shot of the resonance flap hinge.

[Danimal]

The check valve going into the resonance tube boot is oily on the boot side. The PCV valve is also very wet/oily.

To replace to replace the check valve, is it just press fit?

[Danimal]

Here are pictures of the PCV and check valve.