skiebuster

Wanted to ask...

In my 98 ZJ
I have 2 codes that are coming up every now and again...

PO442 Evap system small leak

PO455 Evap system large leak

where do I begin looking for leaks in the evap system ? How do i find them ?

John Boy

I know this is an old post, but I was just going through some older posts since I just joined not too long ago. I had the same two codes popping up. It turned out that the small evap leak was a hose in the drivers rear (by the evap cannister I believe) that had a crack in it. When the crack got so bad that the hose came off the nipple, it became a large evap leak. Was able to cut an 1" or so off the hose and put it back on the nipple. No problems since.

skiebuster

John boy, thanks for the reply. I found a small hose thats from the hard plastic line to the canister under the from drivers headlite and fixed it today.

I will clear the codes and see how it goes this week and then if it happens again I will keep on looking !