Motorhead X Posted June 19 Posted June 19 The MJ is running and sounding better than ever with my new Rough Country CAI, but now my EVAP line is venting gas fumes into my engine bay because the CAI did not come with a connection for the EVAP system. I want to avoid gas fumes altogether when it goes in the garage. Should I add a custom connection to the air intake tube or disconnect the EVAP system entirely (if so, how is that done). No inspection here in NC. Thanks everyone.
89 MJ Posted June 19 Posted June 19 The evap system is to help deal with fuel vapors. From my understanding, you cannot delete it because it is a vent for the fuel tank. If I were you, I'd get rid of the Rough Country CAI (that is likely actually a hot air intake unless there is an air box around the air filter) and go back to a stock air intake. In lieu of that, adding a custom connection will probably be your best bet.
Motorhead X Posted June 19 Author Posted June 19 Yes, that's the direction I'm thinking of going. Actually, the CAI has been surprisingly good and does have an air box to a greater degree. It seems the stock box was limiting for air flow which is the main reason I installed it. At the very least, it sounds fantastic. I have no way of determining if it increases power, but my impression is it does, more than I was expecting. Install was a pain because it doesn't fit correctly out of the box and required some hammering on the connection braces, one of which there is no way it will work. But it is solidly anchored in place. I don't plan on going back to the stock box unless this EVAP situation doesn't get resolved properly.
Gojira94 Posted June 20 Posted June 20 I got one of those open box for 1/2 price. I popped a hole and grommet n it and connected it. Used a piece of 45* rubber hose and a short piece of tube to make the connection on the intake pipe due to the angle.
Motorhead X Posted Saturday at 01:26 PM Author Posted Saturday at 01:26 PM This looks good. Maybe a 3/4" hole and 5/8" piece of tubing? Did you find the grommet and tubing at an auto parts store or did you have parts laying around?
Gojira94 Posted Saturday at 04:29 PM Posted Saturday at 04:29 PM Just stuff I had lying around. Same diameter as the main evap tube from the canister.
Motorhead X Posted Saturday at 09:18 PM Author Posted Saturday at 09:18 PM Thank you guys. Mod went good. I used a step bit down to 11/16" and a Dorman grommet out of an assortment pack.
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