I have the EM light on (fault code P0420 - exhaust limits below threshold) and Benny has pointed me to the exhaust manifold blowing (after having my timing belt done), I've got the cover off and can't see anything but can feel a small leak both sides of the joint to the down pipe, feels like a gentle blow at 3500 rpm, is this enough to trigger the light?? - He also suspected a leak somewhere in the middle of the exhaust which obviously wouldn't help - which is my next place to check when I can get it on ramps.
I was gonna take the manifold and get it welded, would a repair be possible at the joint???
Also, one final question, am I ok driving around without the heat shield/cover on the manifold???
Many thanks. notsure.gif