I've taken my car for a diagnostic to figure out why i can't pass the smog and they told me that my catalytic converter is not good. I'm thinking its more than just that. Maybe its engine wear. Is there anything I can do to pass the smog test and decrease the smoking. Thanks.
IF IT IS THE VALVE SEALS, putting no smoke might help you.it is a thick additive that does not drip so easy past the valve guides.once it passes drain it out.if its the guides rebuild the head if you like the car