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320i e46 m54b22 nu are compresie


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Salut, am o problema cu un e46 320i motor 2.2 170cai. A inceput sa mearga in 5 pistoane. Am schimbat bobinele si bujiile intre ele si eroarea a ramas aceeasi p1349. L-am dus apoi la bmw unde au facut un test de compresie si au spus ca cilindrul 4 nu are compresie adica 0. au spus ca trebuie desfacuta _chiulasa_ si dupa urmeaza sa vada daca e supapa sau altceva. Preturile sunt insa mari pt acest model si nu prea merita. A patit cineva asta? Nu am gasit nicaieri probleme asemanatoare la aceste motoare. Poate ma ajutati cu vreo idee.
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Daca compresia e foarte mica pe acel piston,se desface capacul de la _chiulasa_ si se poate verifica vizual daca cumva e vre-o supapa ramasa pe deschis ,sau dupa caz (supapa sparta) atunci va trebui desfacuta _chiulasa_, vazut exact care e problema si daca trebuie de rectificat scaunul supapelor afectate, inlocuit supapa si asta-i tot. Operatiile in sine sunt simple la tine.

Nu uita: in primul rand de dat jos capacul chiuloasei si vazut exact care e buba. Supapele le poti cumpara chiar tu,( doar daca e cazul).

Edited by cristianro
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