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boogybren boogybren is offline
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Default Fuel Pump Noise - 09-08-2020, 11:10 AM

Yesterday I started getting a noise from my fuel pump. So far, I haven't noticed anything that would indicate that my motor is getting starved for fuel.

Is there any metrics that the JB4 collects that might give me an indication that it is not working as it should?

Would running E85 cause issues with my stock fuel pump?

2015 F36 335i
JB4 + BEF
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boogybren boogybren is offline
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Default 09-12-2020, 02:02 PM

Apparently E85 is not as lubricating as standard gasoline is. Half a tank through a Lucas fuel treatment and the noise is gone.
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emerson15 emerson15 is offline
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Default 09-15-2020, 09:23 PM

You can run an e30 mix on stock lpfp. you can run e50-e60 on upgraded lpfp, you can run full e85 with upgraded lpfp and hpfp or upgraded lpfp and port injection!
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bandook bandook is offline
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Default 09-16-2020, 06:25 PM

Curious, what noise was it making? I've got a ticking sound coming from the pump and I just started running e20-e30.
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Default 09-16-2020, 09:22 PM

Quote:
Originally Posted by bandook
Curious, what noise was it making? I've got a ticking sound coming from the pump and I just started running e20-e30.
Really hard to describe. Sounded like a chicken quietly getting strangled \_(ツ)_/
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