Hello, I’m a newbie here. I just bought myself a project as it seems. It is a 2002 P38. It is running a bit rough with multiple misfires. I took it to my mechanic last week and found out cylinder 5 has no compression. The mechanic dug a little deeper, he removed the head and found that cylinder 5 is damaged. Long story short, I bought myself a car with a damaged block in one of the cylinder. So here I am this morning doing my research and trying to locate a used engine.

According to Car-Part.com--Used Auto Parts Market, there are the 3 different options for the US Market 4.6L engine (first one is WITHOUT secondary air injection, second is WITH secondary air injection, and last one is called LOW EMISSION). I understand the WITH and WITHOUT secondary air injection but I don't quite understand the LOW EMISSION engine. Can someone shade some lights on this “low emission” engine?? My vehicle is equipped with the secondary air injection, I know the one WITHOUT will not work on my vehicle but what about the “low emission”??

 

The low emissions one I believe was California only

 

What is the specific damage? Piston, cylinder, liner, rings, con rod, block? How many miles on it?