claquement aux soupapes ????

Des informations sur quoi ? sur le fonctionnement ? ca te servira pas a grand chose. Y a la came qui pousse sur le poussoir qui pousse sur la tige de soupape et y a aucun reglage.

Ca se voit la dessus par exemple :


Donc effectivement, si ca claque ca peut venir d'un poussoir, ca fait un gros clac clac, et il suffit de changer ceux qui claquent. Pour info c'est 30€ l'un, et j'en ai un neuf à vendre.

--Message édité par Castagn le 08-07-06 à 17:42:51--

Avant de se lancer dans le changement de poussoirs, vidanger un coup avec de la bonne huile en faisant bien le niveau.

salut
little_buddha je viens d'effectuer la vidange et le claquement est toujours là merci pour ton conseil
castagn comme je ne suis pas mécano chez opel et comme je n'ai jamais pratiqué ce genre d'intervention .....je recherche le plus d'informations possibles afin de ne pas faire de betises si je decide de me lancer.....donc si tu as des plans , des coupes moteurs je suis preneur d'avance merci
@+

Ah ok tu veux le faire toi meme, mais est tu sur que c'est ca ? Pour etre sur a peu pres, tu sais qu'il y a 4 soupapes donc 4 poussoir par cylindre. Moteur tournant en mettant ton oreille sur le cache culbuteur est ce que tu arrives a isoler le poussoir coupable ?
Si tu vois que ca vient d'un endroit particulier y a des chances que ca soit ca. Est ce que tu pourrais enregistrer le bruit pour nous le diffuser histoire de voir si c'est bien ca ?

En tout cas si c'est ca pour le changer faut juste enlever un arbre a came, enlever le poussoir avec les doigts et remettre l'autre a la place, remonter l'arbre a came, et remonter la distribution apres...

J'ai pas trop de coupe pour nos moteurs, j'ai juste cette photo:


En grand : http://perso.crans.org/castagn/reportage/IMG_0378.JPG

ou on voit l'arbre a came ou il y a sous chaque came les poussoirs dans leur logement. Sur la photo en grand tu verras les poussoirs sous les cames de l'arbre a came d'admission en haut a droite.

Voila un poussoir :

la partie interieur qui bouge avec la pression et qui appuie sur la queue de soupape :


la ou la came tape :



On voit le trou dans la gorge qui laisse passer la pression.

ATTENTION il y a 2 references de poussoir hydraulique chez opel et certains magasins n'ont qu'une autre référence, moi j'ai passé 1 semaine a essayer de récuperer la bonne pièce.
Tu as quel moteur et de quelle année ?

Y a les poussoirs comme moi ou tu vois le fond du poussoir autour de la partie centrale et les plus communs il y a une corole autour de la partie centrale qui est plus haute. Pour les differencier dans leur catalogue, ca se fait avec la largeur de la gorge, y a 2 mm pour les communs et 3 mm pour le mien. Je me rappelle plus bien quel moteur utilise lequel mais fait plus confiance a opel pour retrouver le bon.

A tiens j'ai retrouvé sur le net l'autre. Donc pour X18XE ( et X20XE il me semble de 98 ) :



Et pour le 1.6L il me semble et d'autres X20XE :





Par contre chez opel il les vendent par lot de 8 normalement, ce qui revient cher pour en changer un a 30 ou 40€ (je sais plus). Du coup moi j'ai dit que je pouvais pas payer un lot complet mais que je voulais bien en prendre 2 au lieu d'un, ca casse un peu moins les stocks et il a accepté.

--Message édité par Castagn le 09-07-06 à 14:44:06--

little_buddha tu es un dieux ( normal pour un buddha )
le claquement a disparu
j'ai voulu enregistré le bruit (comme me l'avait suggeré castagn) mais plus de claquement ....... la vidange a fait son effet.....
ce qui veut dire qu'il vaut mieux effectuer ses vidanges soi meme ( vidange effectuée moins de 8000 kms chez nor..to )ils ont dus me mettre de l'huile de me...
en tout cas cela peut servir a d'autres avant de tout demonter une p'tite vidange perso avec une huile de qualité et hop
merci @+

Je n'ai jamais changé un poussoir, même à 260000 kms sur mon ancienne vectra. Lorsqu'il fait du bruit, c'est souvent qu'il est désamorcé ou mal lubrifié. Ce genre de problèmes est assez fréquent sur les Opel, surtout en hiver et ses sont toujours résolus peu après une vidange (il faut patienter un peu après la vidange, et éviter de garer la voiture en pente).

J'ai tendance à penser qu'une huile de synthèse 5w40 est préférable (ceci dit je mettais de la 15w40 bas prix sur mon ancienne), et je crois qu'il existe des additifs pour les poussoirs.

Ouaip moi j'avais mis de l'additif censé lubrifié les contacts vers les soupapes mais rien n'y faisait donc changement...

Je pense que les huiles "haut de gamme" en contiennent déjà. C'est justement la différence entre du haut de gamme et les huiles carrefour ou norauto à mon avis.

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