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Problema pornire + in mers


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Salut!

Detin un BMW Z3, 2.0 150 cai, dublu vanos, 2001. De ceva vreme, are o problema foarte enervanta. Mai exact, la inceput, cu motorul cald, daca opream masina si o reporneam, pornea super greu si apoi nu mai tragea, ca si cum ar avea motor minuscul, plus ca la pornirea de pe loc, de cele mai multe ori murea motorul. Am inceput prin a schimba sonda lambda, filtru benzina+aer, senzor clapeta acceleratie, senzor ax cu came, bujii.

In continuare, problema persista. La rece, motorul functioneaza foarte bine, porneste instant. Odata ajuns la temeperatura optima, daca opresc motorul si il repornesc, la fel: porneste foarte greu si masina nu trage. De asemenea, motorul se aude parca mai infundat in turatii mari, insa nu se mai opreste la pornirea de pe loc.

Pe tester nu apare nici o eroare, iar cei de la service nu stiu ce sa ii mai faca. Motorul cica functioneaza la parametrii, injectoarele sunt ok, vanos la fel.

Ma puteti ajuta cu o parere?

Multumesc!

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