Fuel Drain Plug?

onesixeight · 08-17-2015, 03:56 PM

Does anyone know if there is a fuel drain plug for the M4? Thanks

A Frankfurt · 08-17-2015, 04:39 PM

Quote:

Originally Posted by onesixeight

Does anyone know if there is a fuel drain plug for the M4? Thanks

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YasM3 · 08-17-2015, 06:28 PM

There is no FUEL drain plug

//M · 08-18-2015, 10:18 AM

If you really need to drain the tank you could...

1) disconnect a fuel line from underneath.. (Just be on the underside of the car so its not high pressure)
2) disconnect the ECU harness
3)turn the ignition on

The low pressure fuel pump will run continuously make sure you have a large enough bucket.

slaughter.mode · 01-24-2023, 12:37 PM

Curious-has anyone tested this? Is three any concerns about potentially clogging the LPFP with crap that has been sitting in the tank? I am at the point where I need to drain my tank and the manual hand pumping from the fill port is a PITA. My other idea was just popping open the housing where I installed the MHD ECA unit and fitting the suction line from the pump on the output port.

08-17-2015, 03:56 PM	#1
onesixeight Captain 102 Rep 614 Posts Drives: F82 M4/i8 Join Date: May 2005 Location: Seattle, WA iTrader: (3)	Fuel Drain Plug? Does anyone know if there is a fuel drain plug for the M4? Thanks
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08-17-2015, 06:28 PM	#3
YasM3 Lieutenant 258 Rep 487 Posts Drives: A BMW Join Date: Apr 2014 Location: Out here iTrader: (0)	There is no FUEL drain plug
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08-18-2015, 10:18 AM	#4
//M Lieutenant 243 Rep 497 Posts Drives: M2 Comp Join Date: Aug 2014 Location: Northeast iTrader: (0)	If you really need to drain the tank you could... 1) disconnect a fuel line from underneath.. (Just be on the underside of the car so its not high pressure) 2) disconnect the ECU harness 3)turn the ignition on The low pressure fuel pump will run continuously make sure you have a large enough bucket.
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01-24-2023, 12:37 PM	#5
slaughter.mode Major 881 Rep 1,044 Posts Drives: 2018 M4 Competition Join Date: Mar 2018 Location: Chino Hills, California iTrader: (0) Garage List 2018 BMW M4 ZCP [9.80]	Curious-has anyone tested this? Is three any concerns about potentially clogging the LPFP with crap that has been sitting in the tank? I am at the point where I need to drain my tank and the manual hand pumping from the fill port is a PITA. My other idea was just popping open the housing where I installed the MHD ECA unit and fitting the suction line from the pump on the output port. __________________ Instagram: Slaughter.Mode
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