{"id":7715,"date":"2022-05-07T14:42:34","date_gmt":"2022-05-07T18:42:34","guid":{"rendered":"https:\/\/gm-techlinkfrench.com\/?p=7715"},"modified":"2022-09-07T15:01:47","modified_gmt":"2022-09-07T19:01:47","slug":"bruit-anormal-de-tapotement-du-moteur","status":"publish","type":"post","link":"https:\/\/gm-techlinkfrench.com\/?p=7715","title":{"rendered":"Bruit anormal de tapotement du moteur"},"content":{"rendered":"<p style=\"font-weight: 400;\">Un son anormal de tapotement du moteur peut \u00eatre entendu sur certains mod\u00e8les Silverado et Sierra 2019-2022 \u00e9quip\u00e9s du moteur 2,7L (EFC L3B). Le son peut \u00eatre entendu depuis la zone du porte-cames. Les codes d&#8217;anomalie P0300-P030 de rat\u00e9s d&#8217;allumage du moteur peuvent \u00e9galement \u00eatre m\u00e9moris\u00e9s.<\/p>\n<p style=\"font-weight: 400;\">Si un bruit de tapotement se fait entendre dans la zone du porte-cames, il peut \u00eatre le r\u00e9sultat d&#8217;un mouvement excessif du galet suiveur d&#8217;\u00e9chappement, qui peut \u00eatre d\u00fb \u00e0 l&#8217;usure de l&#8217;axe d&#8217;essieu. Utiliser un st\u00e9thoscope pour d\u00e9terminer si le bruit du moteur peut \u00eatre isol\u00e9 du c\u00f4t\u00e9 \u00e9chappement du porte-cames. Un galet suiveur d&#8217;\u00e9chappement us\u00e9 n\u00e9cessite la d\u00e9pose de l&#8217;ensemble porte-cames pour une inspection plus approfondie. Se reporter aux informations d&#8217;entretien appropri\u00e9es pour la d\u00e9pose du porte-cames.<\/p>\n<p style=\"font-weight: 400;\">Une fois le porte-cames retir\u00e9, v\u00e9rifier qu&#8217;aucun des galets suiveurs d&#8217;\u00e9chappement ne pr\u00e9sente d&#8217;usure importante ou de mouvement vers le haut ou vers le bas du galet. (Fig. 6)<\/p>\n<p style=\"font-weight: 400;\">\n<p>&nbsp;<\/p>\n<p style=\"font-weight: 400; text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-16202\" src=\"https:\/\/gm-techlink.com\/wp-content\/uploads\/2022\/05\/F06-engine-sound-2.jpg\" alt=\"\" width=\"740\" height=\"480\" \/><strong>Fig. 6<\/strong><\/p>\n<p style=\"font-weight: 400;\">\n<p>&nbsp;<\/p>\n<p style=\"font-weight: 400;\">Un mouvement excessif de haut en bas est une indication d&#8217;usure accrue de l&#8217;axe d&#8217;essieu et, dans le pire des cas, les rouleaux peuvent sortir de leur position, entra\u00eenant une soupape pli\u00e9e ou une tige de soupape endommag\u00e9e. (Fig. 7)<\/p>\n<p style=\"font-weight: 400;\">\n<p>&nbsp;<\/p>\n<p style=\"font-weight: 400; text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-16203\" src=\"https:\/\/gm-techlink.com\/wp-content\/uploads\/2022\/05\/F07-engine-sound-1.jpg\" alt=\"\" width=\"740\" height=\"480\" \/><strong>Fig. 7<\/strong><\/p>\n<p style=\"font-weight: 400;\">\n<p>&nbsp;<\/p>\n<p style=\"font-weight: 400;\"><strong>TIP :<\/strong> Inspecter la zone de la culasse pour d\u00e9tecter tout palier \u00e0 rouleaux desserr\u00e9 et le retirer avant le remontage. Chacun des galets suiveurs aura un total de 10 paliers \u00e0 rouleaux.<\/p>\n<p style=\"font-weight: 400;\">Si un galet suiveur d&#8217;\u00e9chappement us\u00e9 est d\u00e9tect\u00e9, remplacer les huit r\u00e9gleurs de jeu hydraulique d&#8217;\u00e9chappement et galets suiveurs d&#8217;\u00e9chappement. L&#8217;arbre \u00e0 cames d&#8217;\u00e9chappement doit \u00e9galement \u00eatre inspect\u00e9 pour d\u00e9tecter les dommages ou l&#8217;usure pr\u00e9matur\u00e9e caus\u00e9s par un galet suiveur us\u00e9. (Fig. 8)<\/p>\n<p style=\"font-weight: 400;\">\n<p>&nbsp;<\/p>\n<p style=\"font-weight: 400; text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-16204\" src=\"https:\/\/gm-techlink.com\/wp-content\/uploads\/2022\/05\/F08-engine-sound-3.jpg\" alt=\"\" width=\"740\" height=\"480\" \/><strong>Fig. 8<\/strong><\/p>\n<p style=\"font-weight: 400;\">\n<p>&nbsp;<\/p>\n<p style=\"font-weight: 400;\">Pour plus de renseignements, se reporter au document PIP5847.<\/p>\n<p style=\"font-weight: 400;\">\n<p style=\"font-weight: 400;\"><em>&#8211; Merci \u00e0 Robert Halas<\/em><\/p>\n<p style=\"font-weight: 400;\">\n<p style=\"font-weight: 400;\">\n","protected":false},"excerpt":{"rendered":"<p>Un son anormal de tapotement du moteur peut \u00eatre entendu sur certains mod\u00e8les Silverado et Sierra 2019-2022 \u00e9quip\u00e9s du moteur 2,7L (EFC L3B). Le son peut \u00eatre entendu depuis la [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[44],"tags":[],"class_list":["post-7715","post","type-post","status-publish","format-standard","hentry","category-2022-may"],"_links":{"self":[{"href":"https:\/\/gm-techlinkfrench.com\/index.php?rest_route=\/wp\/v2\/posts\/7715","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=7715"}],"version-history":[{"count":1,"href":"https:\/\/gm-techlinkfrench.com\/index.php?rest_route=\/wp\/v2\/posts\/7715\/revisions"}],"predecessor-version":[{"id":7716,"href":"https:\/\/gm-techlinkfrench.com\/index.php?rest_route=\/wp\/v2\/posts\/7715\/revisions\/7716"}],"wp:attachment":[{"href":"https:\/\/gm-techlinkfrench.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=7715"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/gm-techlinkfrench.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=7715"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/gm-techlinkfrench.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=7715"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}