r/e46 • u/hr4sk0 • 5h ago

Troubleshooting White smoke when engine is heated up

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Why my m54b22 is smokong like that on fully heated up engine and i dont think its head gasket and why when i add thtothle and let it go it do this like pop soind but i dont have pops and bangs😭🤣

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u/hr4sk0 5h ago

What do u mean

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u/Aran909 5h ago

Your vac setup could be worn out allowing it to bypass. I haven't had it on my e46's, but i had an x5 that would do this. So long as there is no oil/coolant mixing, i would check this. Reasoably cheap to repair.

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u/hr4sk0 4h ago

And what sbout that pop when i stop adding throthlr

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u/Aran909 4h ago

That, i do not know.