I'm not sure what you mean by the CO?I replaced the whole air intake
system already, if you mean the ground at the cylinder head, if you
mean the one by the valve cover, you may be right, because it is loose
one a little oily, I'll try to clean up all the grounds i can
find,cause ya never know,the gas consumption is alot worse now aswell
just remembered now to mention it, but it may be a pointer