Friday, March 22nd, 2013 AT 2:57 AM
I have a 1996 Chevy s10 with 207156 miles. It has loud knocking, will not pass smog, it has high HC and high co. It also has low oil pressure at idle after warm up. The pressure is ok on freeway until sitting at a light or something. Please help if you can. Reply jonathanmllvll@aol. Com.