hi everyone, i have a 1998 civic dx sedan with about 104,000 miles and the other day the engine started knocking really bad. i tried changing the oil but the knock didnt go away, and today as i was driving it (i know i shouldnt be but its my only car and i have to go to work) and it started stalling at idle. if anybody has any ideas/suggestions as to what it could be i would really appreciate it.

 

Also i ran the diagnostics tool at advanced auto and it gave me: P1336 - CKP or CMP input to PCM concerns