Jtrux Posted February 29, 2016 Share Posted February 29, 2016 I am installing a new tank later this week and I need to find the gaskets for those little vent valves on top of the tank. I'm assuming the valves are good, but, if cheap enough, I'll replace them, too. Where should I find them? I didn't have luck with Rock Auto. Link to comment Share on other sites More sharing options...
Tj1 Posted February 29, 2016 Share Posted February 29, 2016 try here Link to comment Share on other sites More sharing options...
Jtrux Posted February 29, 2016 Author Share Posted February 29, 2016 Thank you Link to comment Share on other sites More sharing options...
ParadiseMJ Posted March 1, 2016 Share Posted March 1, 2016 The rollover/vent valves are just a ball in a cylinder, They're there to vent the fumes into the EVAP can ... and ...if the truck goes upside down fuel doesn't pour out the vents. Mine were toast, because the plastic tops/nipples had disintegrated. I got the whole valve(s) at the Jeep dealer with grommets included for $25 a pop. Put them in and install the vacuum lines while the tank is out...I found this out the hard way. :doh: Link to comment Share on other sites More sharing options...
schardein Posted March 1, 2016 Share Posted March 1, 2016 I have a separate project that involves replacing these valves. My plan to cross reference the part and determine if a newer part will work or if the part is still used on current cars. Then get some from the junkyard that are like new for a few bucks. Link to comment Share on other sites More sharing options...
ParadiseMJ Posted March 4, 2016 Share Posted March 4, 2016 The plastic nipples deteriorate with exposure to fuel and time. Also, the valves are a two piece design...so once you stick it in, and then try to pull it out, the bottom pops off and falls into the tank...at least mine did. So if you're searching junkyards for pristine valves, be real careful when you're trying to pull it out of the tank. Link to comment Share on other sites More sharing options...
Virginia Posted April 9, 2016 Share Posted April 9, 2016 I think one of those valves broke off on the top of my 89 comanche. Should I just replace that valve or the entire tank? Link to comment Share on other sites More sharing options...
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