03 Dodge Ram 1500, 5.7L has rough idle and misfire at 1500 to 2500 RPM while driving

Question

the computer codes are P0172 Systen too Rich (Bank 1) and P0300 Random Misfire. Is this due to maybe a TPS or do you think I might have an injector issue?

Answer 1

my dodge ram has code po3oo,valve spring broken,at 88,000 mile,second spring at 132,000 cylind 2and 8,is that manfactory defects.

Answer 2

i have a misfire on #2 changed the coil pack, wires, plugs, computer because the dealar said that was the prob. i just checked the compresstion on all, and the # 2 was lower. so a broken spring and or a sticky valve.
on a 04 dodge ram 5.7 hemi, yeh it's got a hemi. hemi over some money!