I need some info., please. I am doing a compression check on my 5.9 magnum, because I have a low idle miss. I think it is a burnt valve. I was wondering if anyone had the compression specs. on the 5.9 engine (stock). I've only checked one bank, but the numbers don't look good. I have two 125s, a 110 and a 100 :WHT: . I'll check the other bank tonight. I have 114000 on the truck, It may be time for an overhaul.