Hello all
What an afternoon of work! Long story short, smoke sign of a bad AOS. (second in 2500miles) Open the intake, lots of oil, clean it. Then proceed to remove the AOS and found a strange foam in the lower tube, the one connected to the long pipe going to the PCV valve. Took more than an hour to pull out the PCV valve, and it has the same foamy stuff. (by the way, the PCV valve is stuck, possible reason for second AOS blown up). I got scared of intermix, pull antifreeze from expension tank, look good. Pull the dip stick, no foam on it. Read about it and some people say foam appear when doing short run when not reaching operating temp. I did a lots of short run this winter as I work less then 5 minutes away from home.
What you guys think it is from the pic?
Later Chris
