Hey guys, I have a question regarding my 2001 TJ. It has the 5 speed and 4.0 in it, 102,000 miles. It has the usual problem with starting in that I have to turn the key on and off 2-3 times to get it to start. I'm guessing this has to do with the check valve in the fuel tank. What I am curious about is it also throws the check engine light with the codes for misfires in cyclinders 1 and 3. When it does start it idles pretty rough until I give it a little gas to get the revs up, then it idles fine. Could the check valve be related to these problems or could it possibly be something else entirely? Thanks for reading guys.