O2 sensors causing blue smoke?

**john yerxa** · 08-29-2008, 06:32 AM

have 01 SS, Gutted the cats, put in O2 simms, car started blowing blue smoke while idling, put new cats back on and put O2 sensors back in, and no blue smoke.
Can I figure that the O2 sensors or sims may have had something to do with this, Can O2 sensors call for oil to go in the intake?
Comments please

**Frost** · 08-29-2008, 10:49 AM

these problems are unrelated, the cats are just hiding things.

**Wesman** · 08-29-2008, 02:28 PM

Originally Posted by Frost

these problems are unrelated, the cats are just hiding things.

Exactly. Completely unrelated.

Check your PCV system first, that is most likely the cuplrit. If its plugged up it can cause oil blowby past the rings, or if the valve is stuck open it can cause oil to be sucked into the intake. It seems that about 99% of the oil burning issues on these cars are related to the shitty PCV system.