now I am 80% sure. there is a leaking before bank1 sensor1.

Never work on corrola. donot know how many O2 sensors there. 2 OR 3?

Anyway the leaking should be between engine and first O2 sensor.

所有跟帖： 

• possibly 2. one behind firewall, another seems under passenger s -knp- ♂ (67 bytes) () 06/02/2011 postreply 15:32:47

• because exhause leaking -nonego- ♂ (235 bytes) () 06/03/2011 postreply 06:26:52