Purchased a 2010 jwc about 8 months ago, we installed a frame hitch and we tow it behind our motorhome. I've been visiting this forum for quite a while and finally joined, Few weeks ago it started with the cold start problem of dying and rough idle, after it warmed up it runs great so I have ordered a new fuel pump and also a tensioner, I did the measurement and came up at 66 mm but the tensioner seems warn, when you push it in is very rough and not smooth almost like it's got little Pebbles or something in it. I also pulled the valve cover and everything looks pretty clean so hopefully I still have a few good miles left in it. I will update as soon as I get the parts in and installed and hopefully it will take care of the problems I'm having. Also changing the low pressure fuel filter so hopefully have all the bases covered . All parts are from FCP.