{"id":7348,"date":"2021-02-05T16:27:52","date_gmt":"2021-02-05T21:27:52","guid":{"rendered":"https:\/\/techlinkfrench.mynetworkcontent.com\/?p=7348"},"modified":"2021-04-07T14:11:37","modified_gmt":"2021-04-07T18:11:37","slug":"odeur-de-gaz-dechappement-dans-la-cabine-ou-le-compartiment-moteur","status":"publish","type":"post","link":"https:\/\/gm-techlinkfrench.com\/?p=7348","title":{"rendered":"Odeur de gaz d&#8217;\u00e9chappement dans la cabine ou le compartiment moteur"},"content":{"rendered":"<p>Une odeur de gaz d&#8217;\u00e9chappement peut \u00eatre d\u00e9cel\u00e9e dans la cabine ou le compartiment moteur sur certains mod\u00e8les Silverado et Sierra 2020-2021, et Tahoe, Suburban, Yukon et Escalade 2021 \u00e9quip\u00e9s du moteur diesel 3,0 L (EFC LM2). L&#8217;odeur de gaz d&#8217;\u00e9chappement peut \u00eatre caus\u00e9e par une soudure inappropri\u00e9e sur la soupape de contrepression d&#8217;\u00e9chappement (fig. 21).<\/p>\n<p>&nbsp;<\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-14356\" src=\"https:\/\/gm-techlink.com\/wp-content\/uploads\/2021\/02\/F21-exhaust-1.png\" sizes=\"auto, (max-width: 740px) 100vw, 740px\" srcset=\"https:\/\/gm-techlink.com\/wp-content\/uploads\/2021\/02\/F21-exhaust-1.png 740w, https:\/\/gm-techlink.com\/wp-content\/uploads\/2021\/02\/F21-exhaust-1-300x195.png 300w, https:\/\/gm-techlink.com\/wp-content\/uploads\/2021\/02\/F21-exhaust-1-85x55.png 85w, https:\/\/gm-techlink.com\/wp-content\/uploads\/2021\/02\/F21-exhaust-1-200x130.png 200w\" alt=\"\" width=\"740\" height=\"480\" \/><strong>Fig. 21<\/strong><\/p>\n<p>&nbsp;<\/p>\n<p>En pr\u00e9sence d&#8217;une odeur de gaz d&#8217;\u00e9chappement, effectuer un essai d&#8217;\u00e9tanch\u00e9it\u00e9 du joint soud\u00e9 de la soupape de contrepression d&#8217;\u00e9chappement avec le d\u00e9tecteur de fuite de diagnostic Power Smoke GE-52250 ou de l&#8217;eau savonneuse. Se reporter \u00e0 la plus r\u00e9cente version du document PIP5684 pour de plus amples renseignements sur l&#8217;utilisation du d\u00e9tecteur GE-52250.<\/p>\n<p>La soupape de contrepression d&#8217;\u00e9chappement est situ\u00e9e entre le tuyau descendant du syst\u00e8me de r\u00e9duction catalytique s\u00e9lective (SCR) avec filtre et le syst\u00e8me SCR sous le plancher.<\/p>\n<p>La fum\u00e9e du d\u00e9tecteur GE-52250 pourrait ne pas traverser le filtre \u00e0 particules diesel (DPF), il est donc recommand\u00e9 d&#8217;effectuer l&#8217;essai en aval du syst\u00e8me d&#8217;\u00e9chappement en injectant la fum\u00e9e au niveau du raccord du joint \u00e9lastique du tuyau d&#8217;\u00e9chappement arri\u00e8re. Le joint \u00e9lastique du tuyau d&#8217;\u00e9chappement arri\u00e8re n&#8217;atteint pas le refroidisseur de gaz d&#8217;\u00e9chappement, il est donc n\u00e9cessaire d&#8217;envelopper le tuyau d&#8217;\u00e9chappement arri\u00e8re avec du ruban \u00e0 conduit (duct tape) pour sceller les trous du refroidisseur. S&#8217;assurer de retirer le ruban \u00e0 conduit du refroidisseur d&#8217;\u00e9chappement une fois l&#8217;essai termin\u00e9.<\/p>\n<p>R\u00e9parer toutes les fuites rep\u00e9r\u00e9es apr\u00e8s l&#8217;essai d&#8217;\u00e9tanch\u00e9it\u00e9 des composants du syst\u00e8me d&#8217;\u00e9chappement. Une soudure inefficace au niveau de la bride peut \u00eatre une source de fuite (fig. 22). Si un joint soud\u00e9 pr\u00e9sente une fuite, remplacer la soupape de contrepression d&#8217;\u00e9chappement.<\/p>\n<p>&nbsp;<\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-14357\" src=\"https:\/\/gm-techlink.com\/wp-content\/uploads\/2021\/02\/F22-exhaust-2.png\" sizes=\"auto, (max-width: 740px) 100vw, 740px\" srcset=\"https:\/\/gm-techlink.com\/wp-content\/uploads\/2021\/02\/F22-exhaust-2.png 740w, https:\/\/gm-techlink.com\/wp-content\/uploads\/2021\/02\/F22-exhaust-2-300x195.png 300w, https:\/\/gm-techlink.com\/wp-content\/uploads\/2021\/02\/F22-exhaust-2-85x55.png 85w, https:\/\/gm-techlink.com\/wp-content\/uploads\/2021\/02\/F22-exhaust-2-200x130.png 200w\" alt=\"\" width=\"740\" height=\"480\" \/><strong>Fig. 22<\/strong><\/p>\n<p>&nbsp;<\/p>\n<p><em>&#8211; Merci \u00e0 Robert Bastien<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Une odeur de gaz d&#8217;\u00e9chappement peut \u00eatre d\u00e9cel\u00e9e dans la cabine ou le compartiment moteur sur certains mod\u00e8les Silverado et Sierra 2020-2021, et Tahoe, Suburban, Yukon et Escalade 2021 \u00e9quip\u00e9s [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[35],"tags":[],"class_list":["post-7348","post","type-post","status-publish","format-standard","hentry","category-2021-feb"],"_links":{"self":[{"href":"https:\/\/gm-techlinkfrench.com\/index.php?rest_route=\/wp\/v2\/posts\/7348","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/gm-techlinkfrench.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/gm-techlinkfrench.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/gm-techlinkfrench.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/gm-techlinkfrench.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=7348"}],"version-history":[{"count":2,"href":"https:\/\/gm-techlinkfrench.com\/index.php?rest_route=\/wp\/v2\/posts\/7348\/revisions"}],"predecessor-version":[{"id":7378,"href":"https:\/\/gm-techlinkfrench.com\/index.php?rest_route=\/wp\/v2\/posts\/7348\/revisions\/7378"}],"wp:attachment":[{"href":"https:\/\/gm-techlinkfrench.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=7348"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/gm-techlinkfrench.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=7348"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/gm-techlinkfrench.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=7348"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}