Engine wont fire up, any help would be appreciated

BennyBeemer

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Joined
Sep 27, 2023
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Hello everybody. My Z3 has been out of commission a while and been trying to get her going again. I siphoned the old gas (Still fine but just to guarantee) put in a fresh lot.

Wouldnt quite fire up when starting.
Spray some Ether into the air intake and it fired up but died after one rev.

I noticed a mechanical humming sound from the 2 nodes on the front of the engine however i got no clue what they are.

I tapped them when i was listening and the hum would change to a deeper sound then back up to its usual. Does this sound familiar to anybody ?
Sorry im not very mechanically savvy. I thought perhaps o2 sensor or something.

Thank you for your help
 

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