Join Date: Mar 2004
Location: Laytonsville, MD
I ll agree with what's said above probably something in the evap vent , a bad check valve? and add that with a 10 yr old vehicle the possibility of cracked hoses and brittle plastic fittings in the vapor system increase. Do a complete check of the vapor system plumbing.
2004 Sienna Pearl
no front bumper extensions
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some scrapes, dents and some skids ,UCF high clearance skid, Hybrid 3" lift w/tera 3", Bilstein 5100s, F&RATB, JJ control arms , on 255/85 KM2's
2013 crush JKU AEV bling 285/75-17s
2006 TJ project truck GR8Tops, flat fenders , 34s , 6' bed are the plan