GSXR 750 fait un bruit métallique à froid… normal ou pas ?

[gsxr_addict]

Salut à tous,

Je viens vers vous parce que j’ai un petit doute sur mon GSXR 750 (K8, 42 000 km).

Depuis quelques semaines, j’ai remarqué un bruit métallique à froid, surtout les premières minutes après le démarrage.
Ça fait un peu comme un “cliquetis” côté moteur, qui disparaît presque complètement une fois la moto chaude.

Ce que j’ai déjà vérifié :

Niveau d’huile OK
Vidange faite il y a ~1500 km (Motul 10W40)
Pas de perte de puissance
Aucun voyant

Le bruit est surtout présent :

au ralenti
et un peu en dessous de 4000 tours

Après, une fois chaude → presque plus rien

Est-ce que ça pourrait venir du tendeur de chaîne de distribution ?
Jeu aux soupapes à prévoir ?
Ou juste “normal” sur ce modèle ?

Si certains ont déjà eu le cas sur GSXR 600/750/1000, je suis preneur de vos retours

Merci d’avance !

[rider77]

Franchement, ce que tu décris ça sent très fort le tendeur de chaîne de distribution

J’ai eu exactement le même symptôme sur mon GSXR 600 K7 :

cliquetis à froid
surtout au ralenti
ça disparaît en chauffant

Dans mon cas c’était bien le tendeur d’origine qui commençait à fatiguer.

Sur ces modèles, le tendeur automatique peut perdre un peu de pression à froid, du coup la chaîne de distrib claque légèrement jusqu’à ce que l’huile monte bien en pression.

Le jeu aux soupapes, en général, ça fait du bruit à chaud aussi, donc moins probable vu ce que tu décris.

Et non, ce n’est pas vraiment “normal”, mais c’est un classique sur GSXR

Tant que le bruit disparaît à chaud et que t’as pas de perte de perf, c’est pas urgent urgent, mais à surveiller rapidement quand même.

[gsxr_addict]

Merci Rider, je vais aller faire contrôler la chaine

[FrankJScott]

I think you could probably google that

[FrankJScott]

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