P0455,evap system leak (large) - Printable Version +- Car Repair Forum (https://fixkick.com/forum) +-- Forum: Suzuki (https://fixkick.com/forum/forum-suzuki) +--- Forum: Sidekick/Tracker (https://fixkick.com/forum/forum-sidekick-tracker) +--- Thread: P0455,evap system leak (large) (/thread-p0455-evap-system-leak-large) |
P0455,evap system leak (large) - 98TrackerMan - 05-23-2016 Howdy All. 1998 Chevy Tracker 4cyl-4wd-4Dr-98K mi.on it. Got a "service eng. soon" light- got out the OBDII and came up with code P0455,evap system leak (large). - where should I start & what should I do about this one? So far i cked the gas cap. It is tight and is a new one. I replaced in oct 2015 to clear that previous 2015 code. I do smell a slight odor of gas after I parked in my yard. At first i thought it was because i just filled up....but than the Eng light came on in the AM on next start up. weather supposed to be nice this week -I guess I'll be crawling around!-Ha Thx- 98TrackerMan RE: P0455,evap system leak (large) - fixkick - 05-23-2016 if the caps seals,and you reset 455s and it comes back you have an EVAP breach. it is a large leak there are only 2 ways, besides, looking for rusted top of tank or hose cracks that is pressure testing or vacuum testing it, called a leak down test. one way is use a LPHV spray paint gun regulator, set to 1 or 2 psi, lowest possible (got shop air?) then pressure the system. then listen for leaks using a rubber hose to ear. and or use soapy water to find bobbles, same way the gas man finds gas leaks on furnace leaks. http://www.fixkick.com/sensors/EVAP/Evap-testing.html that smelt fumes is wrong. RE: P0455,evap system leak (large) - 98TrackerMan - 05-23-2016 Thx for the quick reply - guess I'll have a little work to do this week inspecting the problem-maybe the fumes is coming from a cracked hose? - I'll be cking out the link you sent. Have to ask around for a LPHV spray paint gun regulator, But yes, I have air-& soapy water! Thanks again fixkick , - Regards 98TrackerMan (05-23-2016, 09:20 AM)fix kick Wrote: if the caps seals,and you reset 455s RE: P0455,evap system leak (large) - fixkick - 05-24-2016 good, have air. must be carefull not to use too much pressure. even 1/2 PSIis plenty. there can be other failures , all valves there are suspect. if stick open. normally the fumes collect in the EVAP tank and can not stink. my guess is there is a simple breach. (nose told you that) there are 3 methods, air, or inert nitrogen.(plus soap spray) vacuum tests, find it. (soap bubbles not work here, only listening for hiss leaks) or smoke machine. (see smoke , bingo) and the horrid way take all parts off car, test each 1 by one, for leaks. (yes, a real pain) if lucky air pressure applied and a rubber hose held to ear and moved about, all places vent hoses, you may hear that hiss.. can be easy way,,, of all. |