Here's an interesting design issue. The replacement PVC line is not sufficiently sealed where a secure plug was installed and the hose diameter is different on both sides of the secure plug. The hose has come loose at both sections of the plug. I think the fix for this is either a tubing splice or a single piece hose. It seems the leak is here. When the engine is running, and the hose pieces are held in position the idle returns to normal. So my temp solution is possibly using high temp sealant over the entire hose joint. More to follow.
And the issue of the hissing is when the engine is running and the sound is at or near the evap canister. I've not heard this sound in the four years I've had this car even prior to all this recent engine evap work.
Monday, October 1st, 2012 AT 8:57 PM