I have searched and can't find the answer. I'm going to look at a 98 civic with a
b18a1 bottom end
b16a2 sir head
but the check engine light is on how will I check to see what code and the find what the code is please help

 

there are faq's on this. 2nd its goin to throw a cel if it is a obd1 ecu and motor into a obd2 car will never pass emissions