Pardon my stupidity, and I did actually post to an existing thread, but got no answer. I'm unable to locate the evap canister on my Wrangler (4.0). I've got the Haynes manual which includes very detailed information for the location... on a 4-cyl. There's also excellent pictures. Here's the thing: I see nothing matching the pictures *anywhere* on my 4.0, and nothing at all where they describe in the manual. I'm getting an error code (3 actually) 442, 456, and... eh... something else. At any rate, they amount to EVAPORATIVE EMISSIONS SYSTEM FAILURE (small leak, medium leak and large leak). I had the same issue last June. I replaced the gas cap, which did nothing, but shortly afterward the problem went away. I've tightened the cap, and will replace it tomorrow, but I'd just like to be able to visually inspect the canister... *if* I can find it.